Title: Contractor licensing by state | Cercha

Description: Compare residential contractor licensing and registration by state. Check dollar thresholds, work scope, official sources, and research gaps.

Canonical: https://cercha.pages.dev/research/contractor-licensing-by-state/

# Contractor licensing by state

Licensing research

A state-by-state starting point for checking residential contractor credentials, with a separate electrical, plumbing, and HVAC table. Unverified fields stay blank.

## Check contractor licensing by state before scheduling

Find the work jurisdiction, then compare the proposed scope with the authority's credential rules. This [table](/data/contractor-licensing-by-state.csv) records residential general-contracting routes for all 50 states and the District of Columbia. Each row gives official sources, a retrieval date, and unresolved questions.

New homes, alterations, supervision, and repairs can follow different rules. A [GC classification](https://www.nclbgc.org/license-applicants/) does not establish permission to perform every regulated trade. Check electrical, plumbing, and HVAC work with the responsible trade board separately.

Read the basis and operator beside each dollar threshold. Project cost, contract value, and annual receipts measure different things. A greater-than condition excludes the boundary itself; a greater-than-or-equal-to condition includes it. Registration amounts have separate columns.

The recorded project-cost subset has a median of $4,500 across 14 jurisdictions. That statistic describes this dataset, including its recorded conditions. It cannot set a national minimum job size requiring a license. Scope, permit, and other triggers can apply below a dollar amount.

Six general-contracting classifications remain unresolved. A blank means the research did not establish the answer. Use [verify a contractor license](/guides/verify-contractor-license/) to check the current entity, status, classification, and scope with the issuing authority. Ask the board or a construction attorney about your project.

## Key findings from the recorded data

- The [general table](/data/contractor-licensing-by-state.csv) contains 51 jurisdiction rows.
- Among 14 jurisdictions with verified project-cost licensing dollar boundaries recorded in this [dataset](/data/contractor-licensing-by-state.csv), the median recorded boundary is $4,500. The recorded boundaries range from $1,000 to $50,000. Permit, work-scope, and other triggers can require licensing below these amounts.
- Six general classifications in the [CSV](/data/contractor-licensing-by-state.csv) remain unresolved: Colorado, Missouri, New Hampshire, New Jersey, Ohio, and South Dakota.
- [General-table source access](/data/contractor-licensing-by-state.csv) is labeled direct text for 6 rows, mixed for 5, and indexed extract for 40. These labels describe access, not a current-law certification.

If you are comparing markets, read [residential permits by metro](/research/residential-permits-by-metro/) separately. A permit total does not establish a contractor’s credentials.

## How to use the tables

Find the jurisdiction and read the requirement, credential type, work scope, threshold basis, comparison operator, and notes together. Check the separate registration columns. Use `include_in_threshold_summary=true` to reproduce the 14-row statistic. Annual-receipts and registration amounts are excluded from that subset.

For electrical, plumbing, and HVAC work, ask the responsible trade board about the proposed scope and jurisdiction. This page’s displayed table covers general contracting.

Open the row's official sources before relying on a requirement. A [public lookup link](https://portal.nclbgc.org/Public/Search) identifies a verification resource. It does not establish that any named contractor holds a current credential.

## Method and caveats

The research inspected state boards, agencies, legislative text, government guidance, and local evidence for local rules on October 14, 2026. It distinguishes licenses, registrations, certifications, and tax credentials. Dollar amounts retain their operators and cost bases. Source conflicts and unresolved routes stay in the notes.

The threshold statistic selects the 14 rows marked for inclusion, sorts their amounts, and averages the seventh and eighth values. It excludes annual receipts, registration amounts, class ceilings, bonds, and missing values.

Blank cells must remain unknown or inapplicable as explained by the row. Local permits, owner-builder exceptions, reciprocity, and every credential class are not resolved here. Refresh official sources before applying a legal requirement.

## Where Cercha fits

Cercha helps builders and trades find each other through trade and location search, portfolios, endorsements, and messaging. Use a profile to begin a conversation about the work and credentials. Verify credentials directly with the issuing authority. This research does not establish Cercha's badge-verification method. For the Raleigh-Durham Triangle beta, [ask about the beta](/beta/).

Updated 2026.10.14. 51 rows.

[Download CSV](</data/contractor-licensing-by-state.csv>)

| State | License required for residential general contracting | Dollar threshold usd | Threshold operator | Threshold basis | Issuing body | License classes for residential work | Exam required | Bond or insurance required by board | Online lookup url | Statute or rule citation | Source url | Retrieved date | Notes | Credential type | Registration threshold usd | Registration threshold basis | Include in threshold summary | Registration threshold operator | Evidence access | Sources |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Alabama | threshold | 10000 | > | residential undertaking | Alabama Home Builders Licensure Board | Unlimited; Limited (scope restrictions apply) | yes for Unlimited license; skills-exam reciprocity may apply |  | https://alhobv7prod.glsuite.us/GLSuiteWeb/Clients/ALHOB/Public/LicenseeSearch.aspx |  | https://hblb.alabama.gov/exemptions/\|https://hblb.alabama.gov/faqs-applicants/ | 2026.10.14 | Residential scope. Unlimited route needs exam. Limited route does not cover structural work; commercial general-contracting rules separate. Unfilled fields (unverified or inapplicable where no state license): board bond/insurance, statute/rule citation. | license |  |  | true |  | indexed_extract | [[1]](<#dataset-source-1>) [[2]](<#dataset-source-2>) |
| Alaska | yes |  |  |  | DCCED Division of Corporations, Business and Professional Licensing | General Contractor; General Contractor with Residential Contractor Endorsement | yes for Residential Contractor Endorsement | General contractor bond $25,000; residential-only endorsed contractor bond $20,000; liability insurance required; workers compensation when employees |  | AS 08.18.025; AS 08.18.071; AS 08.18.101 | https://www.commerce.alaska.gov/web/cbpl/ProfessionalLicensing/ConstructionContractors\|https://www.commerce.alaska.gov/web/Portals/5/pub/CON_BondInsuranceQuickFacts.pdf\|https://www.commerce.alaska.gov/web/cbpl/ProfessionalLicensing/ConstructionContractors/ResidentialEndorsementExam.aspx\|https://www.commerce.alaska.gov/web/Portals/5/pub/contractorstatutes.pdf | 2026.10.14 | Residential endorsement applies to new homes and alterations exceeding 25% of structure value. The $10,000 handyman cap is not an unlicensed-work exemption. Unfilled fields (unverified or inapplicable where no state license): lookup URL. | license |  |  | false |  | indexed_extract | [[3]](<#dataset-source-3>) [[4]](<#dataset-source-4>) [[5]](<#dataset-source-5>) [[6]](<#dataset-source-6>) |
| Arizona | threshold | 1000 | >= | aggregate project labor materials and covered items | Arizona Registrar of Contractors |  | yes for applicable trade exam; exemption pathways exist | License bond based on class and annual volume; Residential General below $750,000 volume: $9,000; recovery-fund assessment or $200,000 substitute bond |  | A.R.S. 32-1121(A)(14); A.A.C. R4-9-106; R4-9-112 | https://roc.az.gov/news/az-roc-chino-valley-man-sentenced-ordered-pay-469k-restitution\|https://roc.az.gov/license-classifications\|https://roc.az.gov/bond-information\|https://roc.az.gov/licensing-forms\|https://www.azleg.gov/ars/32/01121.htm\|https://roc.az.gov/sites/default/files/2024-09/2024%20Statute%20and%20Rules%20Book.pdf | 2026.10.14 | Current statute exempts qualifying work below $1,000, so the numeric boundary is $1,000 or more. Permit and larger-project rules independently remove the exemption. Statutory exclusions for specified plug-in/battery fixtures affect the calculation. Board news uses imprecise exceeds wording. Unfilled fields (unverified or inapplicable where no state license): class list, lookup URL. | license |  |  | true |  | mixed | [[7]](<#dataset-source-7>) [[8]](<#dataset-source-8>) [[9]](<#dataset-source-9>) [[10]](<#dataset-source-10>) [[11]](<#dataset-source-11>) [[12]](<#dataset-source-12>) |
| Arkansas | threshold | 2000 | > | residential project labor and materials | Arkansas Contractors Licensing Board / Residential Contractors Committee | Residential Builder; Residential Remodeler; Home Improvement | yes for Residential Remodeler Business and Law; other residential routes not fully verified |  |  | Ark. Code 17-25-513 | https://www.labor.arkansas.gov/wp-content/uploads/ResidentialRules-Nov-2022.pdf\|https://labor.arkansas.gov/licensing/arkansas-contractors-licensing-board/apply-for-contractors-license-registration/\|https://www.labor.arkansas.gov/wp-content/uploads/New-App_Residential-Remodeler_0224_1.pdf | 2026.10.14 | Residential exemption at $2,000 or less; anti-splitting rule applies. Commercial $50,000 threshold does not govern this row. Current agency page available as search extract; direct open returned 403. Unfilled fields (unverified or inapplicable where no state license): board bond/insurance, lookup URL. | license |  |  | true |  | indexed_extract | [[13]](<#dataset-source-13>) [[14]](<#dataset-source-14>) [[15]](<#dataset-source-15>) |
| California | threshold | 1000 | >= | project labor materials and other costs | Contractors State License Board | B General Building; B-2 Residential Remodeling | yes; qualifying individual law/business and applicable trade examinations, subject to waivers | Contractor bond or cashier check $25,000 |  | Cal. Bus. & Prof. Code 7065 (exam requirement); 7071.6 (bond) | https://www2.cslb.ca.gov/Contractors/Applicants/Contractors_License/Exam_Application/Before_Applying_For_License.aspx\|https://www.cslb.ca.gov/Contractors/Applicants/Examination_Study_Guides/\|https://www2.cslb.ca.gov/OnlineServices/WebApplication/InteractivePDFs/ApplicationForHazardousSubstanceRemovalCertification.aspx\|https://www.cslb.ca.gov/Contractors/Maintain_License/Bond_Information/Bond_Requirements.aspx | 2026.10.14 | A permit or additional workers independently triggers licensure below the dollar threshold. Class-specific insurance and exam-waiver rules not fully verified. Unfilled fields (unverified or inapplicable where no state license): lookup URL. | license |  |  | true |  | indexed_extract | [[16]](<#dataset-source-16>) [[17]](<#dataset-source-17>) [[18]](<#dataset-source-18>) [[19]](<#dataset-source-19>) |
| Colorado |  |  |  |  | City of Longmont (verified local example) |  |  |  |  |  | https://longmontcolorado.gov/building-inspection/contractors-information-and-resources/apply-for-new-contractor-license-or-renew-existing-contractor-license/ | 2026.10.14 | UNVERIFIED statewide general-contractor classification. Longmont source establishes its local licensing only. No statewide absence is inferred from that city rule. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, board bond/insurance, lookup URL, statute/rule citation. | local license |  |  | false |  | direct_text | [[20]](<#dataset-source-20>) |
| Connecticut | no |  |  |  | Department of Consumer Protection | New Home Construction registration; Home Improvement registration |  | New Home Construction general liability at least $20,000 | https://www.elicense.ct.gov |  | https://portal.ct.gov/en/DCP/License-Services-Division/All-License-Applications/New-Home-Construction-Contractor-Applications\|https://portal.ct.gov/dcp/home-improvement?language=en_US | 2026.10.14 | Registration required for new homes; aggregate contracts below $3,500 on the same new home exempt. Home-improvement registration also applies; its separate threshold is not entered here. Unfilled fields (unverified or inapplicable where no state license): exam requirement, statute/rule citation. | registration | 3500 | aggregate contracts on same new home | false | >= | indexed_extract | [[21]](<#dataset-source-21>) [[22]](<#dataset-source-22>) |
| Delaware | no |  |  |  | Delaware Department of Labor, Office of Contractor Registration |  |  | Proof of Delaware workers compensation as applicable |  | 19 Del. C. 3603-3605 | https://delcode.delaware.gov/title19/c036/index.html | 2026.10.14 | Construction services and maintenance require registration. Revenue business licenses and trade qualifications are separate. Exam and lookup unverified. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, lookup URL. | registration |  |  | false |  | indexed_extract | [[23]](<#dataset-source-23>) |
| District of Columbia | yes |  |  |  | Department of Licensing and Consumer Protection | General Contractor/Construction Manager (A B C G H); Home Improvement Contractor |  | General contractor liability insurance certificate; home improvement requirements differ | https://scout.dcra.dc.gov/ |  | https://dlcp.dc.gov/page/contractor-and-construction-services | 2026.10.14 | Residential general contractors also need at least one licensed Home Improvement Salesperson. Dollar floor and exam requirement unverified. Unfilled fields (unverified or inapplicable where no state license): exam requirement, statute/rule citation. | license |  |  | false |  | indexed_extract | [[24]](<#dataset-source-24>) |
| Florida | yes |  |  |  | DBPR Construction Industry Licensing Board | Certified Residential Contractor | yes; state certification examination for certified route | Workers compensation or exemption within 30 days of license issuance | https://www.myfloridalicense.com/wl11.asp?mode=0&SID= |  | https://www.myfloridalicense.com/CheckListDetail.asp?XACT_DEFN_ID=18299&clientCode=0608&xactCode=1042 | 2026.10.14 | Certified residential route verified. General/building and registered routes need their own application review; dollar exemptions not verified. Unfilled fields (unverified or inapplicable where no state license): statute/rule citation. | license |  |  | false |  | indexed_extract | [[25]](<#dataset-source-25>) |
| Georgia | yes |  |  |  | State Licensing Board for Residential and General Contractors | Residential Basic; Residential Light Commercial; Commercial General Contractor; Commercial General Contractor Limited Tier | yes; reciprocity and prior-approval pathways differ | Residential Basic liability $300,000 per occurrence; other listed classes $500,000; workers compensation with 3 or more employees |  |  | https://sos.ga.gov/page/residential-and-commercial-general-contractors-frequently-asked-questions | 2026.10.14 | Compensated residential/general contracting requires a license; specialty-trade and owner-builder exemptions exist. Dollar exemption not verified. Unfilled fields (unverified or inapplicable where no state license): lookup URL, statute/rule citation. | license |  |  | false |  | direct_text | [[26]](<#dataset-source-26>) |
| Hawaii | threshold | 1500 | > | project labor and materials | DCCA Contractors License Board |  | yes for responsible managing employee where applicable | Liability and workers compensation insurance |  | HRS 444-2(4) | https://cca.hawaii.gov/wp-content/uploads/2026/04/REC-260123-Info-for-Owners-of-Rental-Property.pdf\|https://cca.hawaii.gov/pvl/files/2026/01/PVL_Form_Contractor_Entity_License_Application_2026-01.pdf\|https://data.capitol.hawaii.gov/hrscurrent/Vol10_Ch0436-0474/HRS0444/HRS_0444-0002.htm | 2026.10.14 | Current statute exempts qualifying projects of not more than $1,500, supporting the > operator. A permit or larger-project work independently removes the exemption. Unfilled fields (unverified or inapplicable where no state license): class list, lookup URL. | license |  |  | true |  | mixed | [[27]](<#dataset-source-27>) [[28]](<#dataset-source-28>) [[29]](<#dataset-source-29>) |
| Idaho | no |  |  |  | DOPL Idaho Contractors Board |  |  | General liability $300,000 single limit; workers compensation or exemption statement |  |  | https://dopl.idaho.gov/con/con-faq/\|https://dopl.idaho.gov/wp-content/uploads/2023/09/General-Contractor-Individual-Application-Feb-2024.pdf | 2026.10.14 | Agency expressly distinguishes registration from licensure. Public works and trade licensing are separate. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, lookup URL, statute/rule citation. | registration | 2000 | construction project materials and labor | false | > | indexed_extract | [[30]](<#dataset-source-30>) [[31]](<#dataset-source-31>) |
| Illinois | local only |  |  |  | Municipalities; no state general-contractor licensing board |  |  |  |  |  | https://ready.illinois.gov/news-releases/061819.html | 2026.10.14 | State official guidance says no statewide general contractor license. Roofing and plumbing licensing are separate; local rules vary. Source is a June 18, 2019 official news release, retrieved in 2026; no 2026 statutory consolidation was established. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, board bond/insurance, lookup URL, statute/rule citation. | local requirements |  |  | false |  | indexed_extract | [[32]](<#dataset-source-32>) |
| Indiana | local only |  |  |  | Local city and county licensing authorities |  |  |  |  |  | https://www.in.gov/core/business_guide.html | 2026.10.14 | State guide says only plumbing contractors have statewide construction-contractor licensing. General, electrical and HVAC requirements are local. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, board bond/insurance, lookup URL, statute/rule citation. | local license |  |  | false |  | indexed_extract | [[33]](<#dataset-source-33>) |
| Iowa | no |  |  |  | Department of Inspections, Appeals, and Licensing |  |  | Workers compensation documentation when applicable; out-of-state contractor bond when applicable | https://laborportal.iwd.iowa.gov/iwd_portal/publicSearch/public | Iowa Code chapter 91C | https://dial.iowa.gov/licenses/building/contractors\|https://dial.iowa.gov/licenses/building/contractors/how-do-i-contractor-registration | 2026.10.14 | Registration based on annual construction receipts, not a single project. Plumbing/mechanical and electrical licenses are separate. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement. | registration | 2000 | annual construction earnings | false | >= | indexed_extract | [[34]](<#dataset-source-34>) [[35]](<#dataset-source-35>) |
| Kansas | local only |  |  |  | County and city licensing authorities |  |  |  |  | K.S.A. 12-1557 | https://www.kslegislature.gov/b2025_26/laws/012_000_0000_chapter/012_015_0000_article/012_015_0057_section/012_015_0057_k/ | 2026.10.14 | Current 2025-26 legislature text establishes local general/building/residential contractor examination and licensing authority. Roofing registration and any electrical licensing transition are separate. Not all municipalities require licensing. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, board bond/insurance, lookup URL. | local license |  |  | false |  | direct_text | [[36]](<#dataset-source-36>) |
| Kentucky | local only |  |  |  | Local authorities for general construction |  |  |  |  |  | https://dhbc.ky.gov/Documents/KHBC_PlanSubmissionApplicationGuide.pdf | 2026.10.14 | State guide says no state license for general erection/construction. State plumbing electrical and HVAC licensing are separate. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, board bond/insurance, lookup URL, statute/rule citation. | local requirements |  |  | false |  | indexed_extract | [[37]](<#dataset-source-37>) |
| Louisiana | threshold | 50000 | >= | new residential structure project value | Louisiana State Licensing Board for Contractors | Residential Construction; Home Improvement | yes for applicable qualifying-party examinations; exemptions allowed | Workers compensation under Title 23; liability insurance or authorized liability trust at least $100,000 |  | La. R.S. 37:2150.1(4)(a)(ii)-(iii); 37:2156.1(D)-(E) | https://legis.la.gov/Legis/Law.aspx?d=93567\|https://www.legis.la.gov/legis/Law.aspx?d=93574\|https://www.lslbc.louisiana.gov/types-of-licenses/\|https://www.lslbc.louisiana.gov/faq/ | 2026.10.14 | Current legislature definitions govern: new residential work at $50,000; existing-home improvements/repairs at $7,500. Board Types page says above $50,000; FAQ retains $75,000 language. Use current statute for boundary; classification depends on scope. Unfilled fields (unverified or inapplicable where no state license): lookup URL. | license |  |  | true |  | mixed | [[38]](<#dataset-source-38>) [[39]](<#dataset-source-39>) [[40]](<#dataset-source-40>) [[41]](<#dataset-source-41>) |
| Maine | no |  |  |  | No state general-contractor board; municipal permits may apply |  |  |  |  |  | https://www11.maine.gov/ag/consumer-protection/consumer-help-topics/housing/home-construction-and-repair | 2026.10.14 | Attorney General says general contractors are not licensed. Written-contract rule above $3,000 is not a licensing threshold. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, board bond/insurance, lookup URL, statute/rule citation. | none statewide |  |  | false |  | indexed_extract | [[42]](<#dataset-source-42>) |
| Maryland | yes |  |  |  | Maryland Home Improvement Commission; Attorney General Home Builder Registration Unit | MHIC Contractor; Home Builder registration for new construction | yes for MHIC contractor | MHIC liability insurance at least $50,000 | https://www.dllr.state.md.us/cgi-bin/ElectronicLicensing/OP_search/OP_search.cgi?calling_app=HIC::HIC_qselect |  | https://www.labor.maryland.gov/license/mhic/mhiclicreq.shtml\|https://www.labor.maryland.gov/license/mhic/mhicfaqlic.shtml | 2026.10.14 | Home improvement requires MHIC license. New homes require Attorney General registration; MHIC license does not authorize new-home building. Dollar exemption unverified. Unfilled fields (unverified or inapplicable where no state license): statute/rule citation. | license for improvements; registration for new homes |  |  | false |  | indexed_extract | [[43]](<#dataset-source-43>) [[44]](<#dataset-source-44>) |
| Massachusetts | yes |  |  |  | Division of Occupational Licensure / OPSI; Office of Consumer Affairs and Business Regulation | Construction Supervisor License; Home Improvement Contractor registration | yes for Construction Supervisor License |  |  | 780 CMR (construction code) | https://www.mass.gov/construction-supervisor-licensing\|https://www.mass.gov/info-details/home-improvement-contractor-registration-and-renewal\|https://www.mass.gov/how-to/apply-for-a-construction-supervisor-license | 2026.10.14 | Construction Supervisor License required for covered supervision, with separate HIC registration for covered existing owner-occupied 1-4 unit work. Scope and exemptions control. Unfilled fields (unverified or inapplicable where no state license): board bond/insurance, lookup URL. | supervisor license plus contractor registration |  |  | false |  | indexed_extract | [[45]](<#dataset-source-45>) [[46]](<#dataset-source-46>) [[47]](<#dataset-source-47>) |
| Michigan | yes |  |  |  | LARA Bureau of Construction Codes | Residential Builder; Residential Maintenance and Alteration Contractor | yes; prelicensure education ordinarily precedes examination |  |  |  | https://www.michigan.gov/lara/bureau-list/bcc/divisions/licensing/residential-builders/forms/-/media/68271D34148D424A8FE5C1F7EBCE4590.ashx\|https://www.michigan.gov/en/lara/bureau-list/bcc/Sections/Licensing-Section/residential-builders/forms/prelicensure-education-requirements-for-residential-builder-and-maintenance-alteration-contractor-a | 2026.10.14 | Builder license covers complete residential structures; maintenance/alteration license limited to selected crafts. Dollar exemption and insurance requirements unverified. Unfilled fields (unverified or inapplicable where no state license): board bond/insurance, lookup URL, statute/rule citation. | license |  |  | false |  | indexed_extract | [[48]](<#dataset-source-48>) [[49]](<#dataset-source-49>) |
| Minnesota | threshold | 15000 | >= | annual residential contracting gross receipts | Department of Labor and Industry | Residential Building Contractor; Residential Remodeler | yes for qualifying person | Liability insurance and workers compensation compliance; limits not verified | https://www.dli.mn.gov/license-and-registration-lookup |  | https://www.dli.mn.gov/business/residential-contractors/residential-contractor-licensing | 2026.10.14 | Direct owner contracts on 1-4 unit residential property involving more than one special skill require builder/remodeler license. Under $15,000 annual residential receipts requires Certificate of Exemption; not a project threshold. Unfilled fields (unverified or inapplicable where no state license): statute/rule citation. | license with certificate-of-exemption route |  |  | false |  | indexed_extract | [[50]](<#dataset-source-50>) |
| Mississippi | threshold | 50000 | > | new residential undertaking | Mississippi State Board of Contractors | Residential Building; Residential Remodeling; Residential Roofing | yes for residential classifications; trade examination and possible waiver pathways |  |  | Miss. Code 73-59-1 | https://www.msboc.us/wp-content/uploads/2022/07/RESIDENTIAL-LAWS-AND-RULES-REVISED-2022-Web-Version.pdf\|https://www.msboc.us/wp-content/uploads/2025/11/RESIDENTIAL-APPLICATION-updated-10-2025.pdf\|https://www.msboc.us/classifications/ | 2026.10.14 | Residential builder threshold verified from board-hosted statute. Remodel and roofing thresholds need separate confirmation. Unfilled fields (unverified or inapplicable where no state license): board bond/insurance, lookup URL. | license |  |  | true |  | indexed_extract | [[51]](<#dataset-source-51>) [[52]](<#dataset-source-52>) [[53]](<#dataset-source-53>) |
| Missouri |  |  |  |  |  |  |  |  |  |  | https://www.stlouis-mo.gov/government/departments/license/business-license-info/Construction-Contracting-Business.cfm | 2026.10.14 | UNVERIFIED statewide classification. Official source proves St. Louis construction business licensing only; it cannot prove statewide absence. Unfilled fields (unverified or inapplicable where no state license): issuing body, class list, exam requirement, board bond/insurance, lookup URL, statute/rule citation. | local business-license route verified |  |  | false |  | indexed_extract | [[54]](<#dataset-source-54>) |
| Montana | yes |  |  |  | Montana Department of Labor and Industry | Construction Contractor License |  |  | https://ebizws.mt.gov/PUBLICPORTAL/searchform?mylist=licenses |  | https://boards.bsd.dli.mt.gov/construction-contractor/ | 2026.10.14 | Effective January 1, 2026 the former contractor registration program became construction contractor licensing. Prior active registrations converted. Exemptions exam and insurance not fully verified. Unfilled fields (unverified or inapplicable where no state license): exam requirement, board bond/insurance, statute/rule citation. | license |  |  | false |  | indexed_extract | [[55]](<#dataset-source-55>) |
| Nebraska | no |  |  |  | Nebraska Department of Labor |  |  | Workers compensation certificate for contractors with employees | https://dol.nebraska.gov/conreg/Search |  | https://dol.nebraska.gov/conreg/ | 2026.10.14 | General and subcontractor registration required subject to statutory exemptions. Dollar exemption not verified; do not substitute an annual-receipts figure from secondary summaries. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, statute/rule citation. | registration |  |  | false |  | indexed_extract | [[56]](<#dataset-source-56>) |
| Nevada | threshold | 1000 | >= | repair or maintenance labor and materials | Nevada State Contractors Board |  | yes; board examination process with possible exemptions | Workers compensation compliance required | https://app.nvcontractorsboard.com/Clients/NVSCB/Public/ContractorLicenseSearch/ContractorLicenseSearch.aspx | NRS 624.031 | https://www.nvcontractorsboard.com/licensing/exemptions/\|https://www.nvcontractorsboard.com/licensing/faq-for-general-requirements/ | 2026.10.14 | Repair/maintenance exemption below $1,000 excludes permits, regulated trades and larger-project work. This is not a blanket new-home exemption. Unfilled fields (unverified or inapplicable where no state license): class list. | license |  |  | true |  | mixed | [[57]](<#dataset-source-57>) [[58]](<#dataset-source-58>) |
| New Hampshire |  |  |  |  |  |  |  |  |  |  | https://gc.nh.gov/statstudcomm/pdf.aspx?legid=1352&sy=2026 | 2026.10.14 | UNVERIFIED statewide general-contractor status. Inspected 2026 residential-builder study-committee law and state licensing searches; no operative general-contractor license rule established. Unfilled fields (unverified or inapplicable where no state license): issuing body, class list, exam requirement, board bond/insurance, lookup URL, statute/rule citation. | unverified |  |  | false |  | direct_text | [[59]](<#dataset-source-59>) |
| New Jersey |  |  |  |  | Division of Consumer Affairs, Regulated Business Section | Home Improvement Contractor Business registration |  |  |  |  | https://www.njconsumeraffairs.gov/HIC/ | 2026.10.14 | UNVERIFIED overall residential general-contractor classification. Current agency page verifies Home Improvement Contractor Business registration only. New-home route and individual-licensure transition unresolved; no overall no-license conclusion is coded. Unfilled fields (unverified or inapplicable where no state license): exam requirement, board bond/insurance, lookup URL, statute/rule citation. | registration; other residential routes unverified |  |  | false |  | indexed_extract | [[60]](<#dataset-source-60>) |
| New Mexico | yes |  |  |  | Regulation and Licensing Department, Construction Industries Division |  | yes; qualifying party classification exam and business/law | Contractor license bond; workers compensation for all licensed entities per CID guidance |  | NMSA 1978 60-13-1 et seq.; 60-13-3 | https://www.rld.nm.gov/uploads/files/CID%20Licensing%20Act%208%2013.pdf\|https://www.rld.nm.gov/construction-industries/apply-for-a-construction-industries-license/ | 2026.10.14 | Handyman exemption limited to casual minor work up to $7,200 annual compensation, subject to registration and excluded trades. This is not a blanket new-construction exemption. Unfilled fields (unverified or inapplicable where no state license): class list, lookup URL. | license |  |  | false |  | indexed_extract | [[61]](<#dataset-source-61>) [[62]](<#dataset-source-62>) |
| New York | local only |  |  |  | Local consumer affairs and building departments |  |  |  |  |  | https://ag.ny.gov/resources/individuals/consumer-issues/contractors-home-maintenance\|https://www.nyc.gov/site/dca/businesses/license-checklist-home-improvement-contractor.page | 2026.10.14 | State guidance identifies local home-improvement licensing authorities. NYC licensing is a local example. $500 written-contract rule is not a license threshold. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, board bond/insurance, lookup URL, statute/rule citation. | local license |  |  | false |  | indexed_extract | [[63]](<#dataset-source-63>) [[64]](<#dataset-source-64>) |
| North Carolina | threshold | 40000 | >= | contract value | North Carolina Licensing Board for General Contractors | Residential; Building | yes for qualifier or accepted exam waiver |  |  | N.C. G.S. 87-1; 87-13; 87-14 | https://nclbgc.org/faq-consumers/\|https://nclbgc.org/wp-content/uploads/2020/04/New-Application-April-2020-Fillable.pdf | 2026.10.14 | General contracting at $40,000 or more. Separate trade licenses may apply below that. Exam/class source is older application; current $40,000 threshold comes from live consumer FAQ. Unfilled fields (unverified or inapplicable where no state license): board bond/insurance, lookup URL. | license |  |  | true |  | indexed_extract | [[65]](<#dataset-source-65>) [[66]](<#dataset-source-66>) |
| North Dakota | threshold | 4000 | > | job cost value or price | North Dakota Secretary of State | A; B; C; D |  | Liability insurance certificate; WSI workers compensation payment certificate or good-standing letter depending on employee/contact status | https://firststop.sos.nd.gov/search/contractor | NDCC chapter 43-07 | https://www.sos.nd.gov/business/licensing-registration/contractors | 2026.10.14 | License includes general contractors and subcontractors. Trade credentials separate. Class limits describe maximum job size, not entry thresholds. Unfilled fields (unverified or inapplicable where no state license): exam requirement. | license |  |  | true |  | direct_text | [[67]](<#dataset-source-67>) |
| Ohio |  |  |  |  | Local building departments; OCILB for commercial trades |  |  |  |  |  | https://com.ohio.gov/divisions-and-programs/industrial-compliance/boards/ohio-construction-industry-licensing-board/contractors-and-contracting-companies | 2026.10.14 | UNVERIFIED statewide general-contractor classification. OCILB page verifies commercial electrical HVAC hydronics plumbing refrigeration licensing, with local residential requirements. Statewide general-contractor absence not separately established. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, board bond/insurance, lookup URL, statute/rule citation. | local requirements; state commercial-trade licenses separate |  |  | false |  | indexed_extract | [[68]](<#dataset-source-68>) |
| Oklahoma | local only |  |  |  | Local jurisdictions; Construction Industries Board for trades |  |  |  |  |  | https://www.oklahoma.gov/cib.html | 2026.10.14 | CIB expressly says no state license for general contracting; local requirements and state trade licensing/registration still apply. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, board bond/insurance, lookup URL, statute/rule citation. | local requirements |  |  | false |  | indexed_extract | [[69]](<#dataset-source-69>) |
| Oregon | yes |  |  |  | Oregon Construction Contractors Board | Residential General; Residential Specialty; Residential Limited; Residential Developer | yes for Residential Limited responsible managing individual; Residential Developer exempt | Residential General bond $25,000 and liability $500,000 per occurrence; Specialty bond $20,000; Limited bond $15,000; class insurance limits differ | http://search.ccb.state.or.us/search/ |  | https://www.oregon.gov/bcd/lbdd/pages/licensed-work.aspx\|https://apps.oregon.gov/SOS/LicenseDirectory/LicenseDetail/620\|https://apps.oregon.gov/SOS/LicenseDirectory/LicenseDetail/188\|https://www.oregon.gov/ccb/Pages/Licensing.aspx\|https://www.oregon.gov/ccb/Pages/CCB%20License.aspx | 2026.10.14 | Nearly all contracted home improvements require licensure. Multiple residential endorsement routes; full exemptions not verified. Bond amounts use post-January 1, 2024 schedule. Unfilled fields (unverified or inapplicable where no state license): statute/rule citation. | license |  |  | false |  | indexed_extract | [[70]](<#dataset-source-70>) [[71]](<#dataset-source-71>) [[72]](<#dataset-source-72>) [[73]](<#dataset-source-73>) [[74]](<#dataset-source-74>) |
| Pennsylvania | no |  |  |  | Office of Attorney General; local licensing authorities |  |  |  | https://hicsearch.attorneygeneral.gov/ |  | https://www.attorneygeneral.gov/businesses-and-organizations/home-improvement-contractor-registration/\|https://www.attorneygeneral.gov/businesses-and-organizations/home-improvement-contractor-registration/frequently-asked-questions/\|https://www.pa.gov/agencies/dli/programs-services/labor-management-relations/bureau-of-occupational-and-industrial-safety/uniform-construction-code-home/contractor-licensing | 2026.10.14 | Home-improvement registration uses annual work volume. New-home construction excluded from HICPA. Local construction licensing may apply. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, board bond/insurance, statute/rule citation. | registration for home improvements; local licensing may apply | 5000 | annual home improvement work | false | >= | indexed_extract | [[75]](<#dataset-source-75>) [[76]](<#dataset-source-76>) [[77]](<#dataset-source-77>) |
| Rhode Island | no |  |  |  | Contractors Registration and Licensing Board |  |  | General liability at least $500,000 |  |  | https://crb.ri.gov/contractor-registration/faqs\|https://crb.ri.gov/general-contractor-registration/apply | 2026.10.14 | Registration required; one contract below $500 exempt subject to FAQ scope. Initial 5-hour course required. Specialty licenses separate. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, lookup URL, statute/rule citation. | registration | 500 | one contract labor materials and other items | false | >= | indexed_extract | [[78]](<#dataset-source-78>) [[79]](<#dataset-source-79>) |
| South Carolina | threshold | 5000 | > | residential undertaking | Residential Builders Commission, Department of Labor Licensing and Regulation | Residential Builder | yes; technical and business/law; waiver pathway has scope limits | Residential Builder surety bond $15,000 | https://verify.llronline.com/LicLookup/Resbu/Resbu.aspx?div=46 | S.C. Code Title 40 chapter 59 | https://www.llr.sc.gov/res/resbuilder.aspx\|https://www.llr.sc.gov/res/exam.aspx\|https://llr.sc.gov/res/PDF/FAQ/residential%20builder%20FAQ.pdf | 2026.10.14 | Residential definition covers structures up to 3 floors and apartment buildings up to 16 units. Specialty trade licensing rules separate. | license |  |  | true |  | indexed_extract | [[80]](<#dataset-source-80>) [[81]](<#dataset-source-81>) [[82]](<#dataset-source-82>) |
| South Dakota |  |  |  |  | Department of Revenue (contractor excise tax licensing) |  |  |  |  |  | https://dor.sd.gov/media/r14irlvd/self-contractors.pdf | 2026.10.14 | UNVERIFIED statewide professional general-contractor classification. Source verifies contractor excise tax license for paid construction; tax licensing is not a competence credential. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, board bond/insurance, lookup URL, statute/rule citation. | tax license verified; professional status unverified |  |  | false |  | indexed_extract | [[83]](<#dataset-source-83>) |
| Tennessee | threshold | 25000 | >= | prime project materials equipment and labor | Tennessee Board for Licensing Contractors | BC-A Residential; BC-A/r Restricted Residential; BC combined building | yes; business/law and trade exam for applicable classes | General liability based on license monetary limit; additional workers compensation/financial conditions require application review |  |  | https://www.tn.gov/commerce/regboards/contractors/license/get/contractor.html\|https://www.tn.gov/commerce/regboards/contractors/license/get/home-improvement.html\|https://www.tn.gov/content/dam/tn/commerce/documents/regboards/contractors/forms/ContLicenseApplicationWeb.pdf | 2026.10.14 | License required before bidding/negotiation. Home Improvement license for $3,000-$24,999 remodeling applies in adopting counties; not a statewide entry floor. Unfilled fields (unverified or inapplicable where no state license): lookup URL, statute/rule citation. | license |  |  | true |  | indexed_extract | [[84]](<#dataset-source-84>) [[85]](<#dataset-source-85>) [[86]](<#dataset-source-86>) |
| Texas | local only |  |  |  | Local cities and counties; state boards for regulated trades |  |  |  |  |  | https://gov.texas.gov/uploads/files/business/2020TexasLicensesPermits.pdf | 2026.10.14 | Governor office guide states no state general-contractor license. Guide is dated 2020; retrieved now but not a verified 2026 statutory consolidation. Local rules may apply. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, board bond/insurance, lookup URL, statute/rule citation. | local requirements |  |  | false |  | indexed_extract | [[87]](<#dataset-source-87>) |
| Utah | yes |  |  |  | Utah Division of Professional Licensing | B100 General Building; R100 Residential and Small Commercial | yes; Business and Law for B100 and R100 | Liability $1,000,000 per occurrence and $2,000,000 aggregate effective April 20, 2026 |  |  | https://commerce.utah.gov/dopl/contracting/\|https://commerce.utah.gov/dopl/contracting/exam-information/ | 2026.10.14 | 2026 contracting page verifies current contractor licensing and updated liability minimums effective April 20. Current handyman exemption threshold withheld because retrieved statute PDF was superseded in 2018. Unfilled fields (unverified or inapplicable where no state license): lookup URL, statute/rule citation. | license |  |  | false |  | direct_text | [[88]](<#dataset-source-88>) [[89]](<#dataset-source-89>) |
| Vermont | no |  |  |  | Secretary of State, Office of Professional Regulation |  |  | Liability $1,000,000 per occurrence; $2,000,000 aggregate |  | 26 V.S.A. 5501(b) | https://sos.vermont.gov/residential-contractors/apply-renew\|https://sos.vermont.gov/residential-contractors/residential-contractor-faqs | 2026.10.14 | Registration and written contract required at threshold. Licensed/certified trade workers exempt for work within their trade scope. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, lookup URL. | registration | 10000 | estimated residential construction labor and materials | false | >= | indexed_extract | [[90]](<#dataset-source-90>) [[91]](<#dataset-source-91>) |
| Virginia | threshold | 1000 | > | project total | Virginia Board for Contractors / DPOR | Class A; Class B; Class C plus appropriate residential specialty | yes for Residential Building qualified individual technical exam; class/designated-employee requirements separate |  | https://www.dpor.virginia.gov/LicenseLookup |  | https://www.dpor.virginia.gov/Boards/Contractors\|https://www.dpor.virginia.gov/sites/default/files/boards/Contractors/A501-27REGS.pdf\|https://www.dpor.virginia.gov/sites/default/files/boards/Contractors/A501-27EXINFO.pdf | 2026.10.14 | Board regulations revised April 29, 2025 use Class C above $1,000 and below $30,000; class plus specialty determines authorization. Other class/designated-employee exam details and financial requirements unverified. Unfilled fields (unverified or inapplicable where no state license): board bond/insurance, statute/rule citation. | license |  |  | true |  | indexed_extract | [[92]](<#dataset-source-92>) [[93]](<#dataset-source-93>) [[94]](<#dataset-source-94>) |
| Washington | no |  |  |  | Department of Labor and Industries | General Contractor registration; Specialty Contractor registration |  | General contractor bond $30,000; specialty bond $15,000; liability insurance required | https://secure.lni.wa.gov/verify/ |  | https://lni.wa.gov/licensing-permits/contractors/register-as-a-contractor/ | 2026.10.14 | General contracting uses registration. Electrical/plumbing licenses are separate. No dollar exemption entered without verification. Unfilled fields (unverified or inapplicable where no state license): exam requirement, statute/rule citation. | registration |  |  | false |  | indexed_extract | [[95]](<#dataset-source-95>) |
| West Virginia | threshold | 5000 | >= | residential undertaking cost | West Virginia Contractor Licensing Board | Residential Contractor; General Building Contractor |  |  |  | W. Va. Code 30-42-3(d) | https://code.wvlegislature.gov/30-42-3/\|https://labor.wv.gov/licensing/hvac-technician-certification/hvac-certification-faq | 2026.10.14 | Current official code still states $5,000 residential and $25,000 commercial. Introduced HB 5489 proposed $10,000; an introduced bill is not operative law. Individual trade certification is separate. Unfilled fields (unverified or inapplicable where no state license): exam requirement, board bond/insurance, lookup URL. | contractor license plus separate individual trade certifications |  |  | true |  | mixed | [[96]](<#dataset-source-96>) [[97]](<#dataset-source-97>) |
| Wisconsin | yes |  |  |  | Department of Safety and Professional Services | Dwelling Contractor; Dwelling Contractor Qualifier |  | Dwelling Contractor general liability certificate at least $250,000 per occurrence; other financial-responsibility routes need checking |  | Wis. Admin. Code SPS 305 | https://dsps.wi.gov/a-z-professions-list/dwelling-contractor-qualifier-dcq/\|https://dsps.wi.gov/a-z-professions-list/dwelling-contractor-qualifier-dcq/new-licensure/\|https://dsps.wi.gov/a-z-professions-list/dwelling-contractor-dc/new-licensure/ | 2026.10.14 | Covered dwelling-permit applicant needs Dwelling Contractor credential and a Dwelling Contractor Qualifier, subject to owner exceptions. Twelve-hour initial qualifier course verified; insurance and dollar limits unverified. Unfilled fields (unverified or inapplicable where no state license): exam requirement, lookup URL. | certification tied to dwelling permits |  |  | false |  | indexed_extract | [[98]](<#dataset-source-98>) [[99]](<#dataset-source-99>) [[100]](<#dataset-source-100>) |
| Wyoming | local only |  |  |  | City and county licensing authorities; State Fire Marshal for electrical |  |  |  |  |  | https://wyomingbusiness.org/business/start/startup-resources/ | 2026.10.14 | Wyoming Business Council states contractor licensing other than electrical is local. Local licensing requirements vary. Unfilled fields (unverified or inapplicable where no state license): class list, exam requirement, board bond/insurance, lookup URL, statute/rule citation. | local license |  |  | false |  | indexed_extract | [[101]](<#dataset-source-101>) |

## Column definitions

- **State:** Full jurisdiction name. District of Columbia is included once.
- **License required for residential general contracting:** `yes`: a state credential applies within the stated residential scope. `threshold`: applicability depends on a sourced dollar condition. `no`: no general competency license for the stated route, often with mandatory registration instead. `local only`: the sourced framework assigns general licensing to local authorities. Empty: classification unresolved.
- **Dollar threshold usd (USD):** Numeric dollar boundary for a license condition. No dollar signs or separators. This is not necessarily a universal licensing floor.
- **Threshold operator:** Source-supported comparison: `>` or `>=`. Source conflicts appear in notes rather than in the operator value.
- **Threshold basis:** What the amount measures: project cost, contract value, annual residential receipts, or restricted repair work.
- **Issuing body:** Responsible state program or local authority for the stated route. Empty when the responsible state issuer was not established.
- **License classes for residential work:** Classes identified from the sources. A list can be partial; notes disclose scope limits.
- **Exam required:** Sourced examination condition. Includes qualifying-party and waiver distinctions. Empty does not mean no exam.
- **Bond or insurance required by board:** Sourced board or program condition. Amounts retain their class, volume, and coverage basis. This does not describe every insurance obligation.
- **Online lookup url:** Public verification tool, or an official landing page linking to one. Registration lookups verify registration only.
- **Statute or rule citation:** Citation explicitly established from inspected source text. Empty when not established.
- **Source url:** Primary sources supporting populated values, or inspected official material for unresolved rows. Split multiple URLs on `|`.
- **Retrieved date:** Inspection date in `YYYY.MM.DD` form. Source publication dates may be older.
- **Notes:** Scope, exemptions, conflicts, source limitations, and unfilled fields.
- **Credential type:** Distinguishes licenses, registrations, local requirements, tax licensing, and permit-related certification.
- **Registration threshold usd (USD):** Sourced registration boundary, kept out of the license-threshold column. Empty is not zero.
- **Registration threshold basis:** Registration cost/receipts basis.
- **Include in threshold summary:** `true` for the recorded project-cost dollar boundary subset; `false` for annual-receipts conditions, missing boundaries, and non-license amounts.
- **Registration threshold operator:** Separate `>` or `>=` registration comparison; empty without a numeric registration boundary.
- **Evidence access:** Source access: direct_text means directly inspected text; indexed_extract means direct reading was not established; mixed combines both. Not a current-law certification.

## Electrical, plumbing, and HVAC licensing

153 rows.

[Download trade CSV](</data/trade-licensing-by-state.csv>)

| State | Trade | State level license required | Board url | Source url | Retrieved date | Scope | Notes | Scope type | Evidence access | Sources |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Alabama | electrical | yes | https://aecb.alabama.gov/ | https://aecb.alabama.gov/ | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | direct_text | [[1]](<#trade-source-1>) |
| Alabama | plumbing | yes | https://pgfb.alabama.gov/applicants/how-do-i-become-licensed/ | https://pgfb.alabama.gov/applicants/how-do-i-become-licensed/ | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | indexed_extract | [[2]](<#trade-source-2>) |
| Alabama | HVAC | yes | https://hacr.alabama.gov/how-to-get-licensed/ | https://hacr.alabama.gov/how-to-get-licensed/ | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | indexed_extract | [[3]](<#trade-source-3>) |
| Alaska | electrical | yes | https://www.commerce.alaska.gov/web/cbpl/professionallicensing/electricaladministrators/licenseapplications.aspx | https://www.commerce.alaska.gov/web/cbpl/professionallicensing/electricaladministrators/licenseapplications.aspx | 2026.10.14 | electrical administrator; worker qualifications separate |  | residential_trade | indexed_extract | [[4]](<#trade-source-4>) |
| Alaska | plumbing | yes | https://www.commerce.alaska.gov/web/cbpl/ProfessionalLicensing/ConstructionContractors | https://www.commerce.alaska.gov/web/cbpl/ProfessionalLicensing/ConstructionContractors | 2026.10.14 | mechanical contractor with appropriate mechanical administrator | Agency identifies plumbing heating sheet-metal and refrigeration administrator disciplines. | residential_trade | indexed_extract | [[5]](<#trade-source-5>) |
| Alaska | HVAC | yes | https://www.commerce.alaska.gov/web/cbpl/ProfessionalLicensing/ConstructionContractors | https://www.commerce.alaska.gov/web/cbpl/ProfessionalLicensing/ConstructionContractors | 2026.10.14 | mechanical contractor with appropriate mechanical administrator | Agency identifies plumbing heating sheet-metal and refrigeration administrator disciplines. | residential_trade | indexed_extract | [[5]](<#trade-source-5>) |
| Arizona | electrical | yes | https://roc.az.gov/license-classifications | https://roc.az.gov/license-classifications | 2026.10.14 | trade contracting or licensed responsible individual | Electrical plumbing and HVAC work needs the appropriate classification; general building scope requires properly licensed trade subcontractors. | contractor_classification | indexed_extract | [[6]](<#trade-source-6>) |
| Arizona | plumbing | yes | https://roc.az.gov/license-classifications | https://roc.az.gov/license-classifications | 2026.10.14 | trade contracting or licensed responsible individual | Electrical plumbing and HVAC work needs the appropriate classification; general building scope requires properly licensed trade subcontractors. | contractor_classification | indexed_extract | [[6]](<#trade-source-6>) |
| Arizona | HVAC | yes | https://roc.az.gov/license-classifications | https://roc.az.gov/license-classifications | 2026.10.14 | trade contracting or licensed responsible individual | Electrical plumbing and HVAC work needs the appropriate classification; general building scope requires properly licensed trade subcontractors. | contractor_classification | indexed_extract | [[6]](<#trade-source-6>) |
| Arkansas | electrical | yes | https://labor.arkansas.gov/wp-content/uploads/Commercial-Contractors-Law-revised-04.2026.pdf | https://labor.arkansas.gov/wp-content/uploads/Commercial-Contractors-Law-revised-04.2026.pdf | 2026.10.14 | trade qualification associated with applicable contractor classification | Board law requires licensed trade personnel; separate individual trade rules also apply. | residential_trade | indexed_extract | [[7]](<#trade-source-7>) |
| Arkansas | plumbing | yes | https://labor.arkansas.gov/wp-content/uploads/Commercial-Contractors-Law-revised-04.2026.pdf | https://labor.arkansas.gov/wp-content/uploads/Commercial-Contractors-Law-revised-04.2026.pdf | 2026.10.14 | trade qualification associated with applicable contractor classification | Board law requires licensed trade personnel; separate individual trade rules also apply. | residential_trade | indexed_extract | [[7]](<#trade-source-7>) |
| Arkansas | HVAC | yes | https://labor.arkansas.gov/labor/code-enforcement/hvac-r/ | https://labor.arkansas.gov/labor/code-enforcement/hvac-r/ | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | indexed_extract | [[8]](<#trade-source-8>) |
| California | electrical | yes | https://www2.cslb.ca.gov/Contractors/Applicants/Contractors_License/Exam_Application/Before_Applying_For_License.aspx | https://www2.cslb.ca.gov/Contractors/Applicants/Contractors_License/Exam_Application/Before_Applying_For_License.aspx | 2026.10.14 | specialty contractor within licensing law | State contractor licensing covers specialty trades; threshold and permit/worker triggers apply. Classification codes independently visible in CSLB registry. | contractor_classification | indexed_extract | [[9]](<#trade-source-9>) |
| California | plumbing | yes | https://www2.cslb.ca.gov/Contractors/Applicants/Contractors_License/Exam_Application/Before_Applying_For_License.aspx | https://www2.cslb.ca.gov/Contractors/Applicants/Contractors_License/Exam_Application/Before_Applying_For_License.aspx | 2026.10.14 | specialty contractor within licensing law | State contractor licensing covers specialty trades; threshold and permit/worker triggers apply. Classification codes independently visible in CSLB registry. | contractor_classification | indexed_extract | [[9]](<#trade-source-9>) |
| California | HVAC | yes | https://www2.cslb.ca.gov/Contractors/Applicants/Contractors_License/Exam_Application/Before_Applying_For_License.aspx | https://www2.cslb.ca.gov/Contractors/Applicants/Contractors_License/Exam_Application/Before_Applying_For_License.aspx | 2026.10.14 | specialty contractor within licensing law | State contractor licensing covers specialty trades; threshold and permit/worker triggers apply. Classification codes independently visible in CSLB registry. | contractor_classification | indexed_extract | [[9]](<#trade-source-9>) |
| Colorado | electrical | yes |  | https://content.leg.colorado.gov/sites/default/files/images/olls/crs2024-title-12.pdf | 2026.10.14 | state individual trade licensing; contractor registration is separate | State statute, not a city rule, supports licensing: article 115 for electrical and article 155 for plumbing. Contractor entities register and require appropriately licensed personnel. Statute edition 2024; board URL not established after direct DPO 403s. | residential_trade | direct_text | [[10]](<#trade-source-10>) |
| Colorado | plumbing | yes |  | https://content.leg.colorado.gov/sites/default/files/images/olls/crs2024-title-12.pdf | 2026.10.14 | state individual trade licensing; contractor registration is separate | State statute, not a city rule, supports licensing: article 115 for electrical and article 155 for plumbing. Contractor entities register and require appropriately licensed personnel. Statute edition 2024; board URL not established after direct DPO 403s. | residential_trade | direct_text | [[10]](<#trade-source-10>) |
| Colorado | HVAC |  |  | https://longmontcolorado.gov/building-inspection/contractors-information-and-resources/apply-for-new-contractor-license-or-renew-existing-contractor-license/ | 2026.10.14 | general HVAC contracting | UNVERIFIED state-level yes/no. Local mechanical licensing exists; a local license does not establish statewide absence. | unresolved | direct_text | [[11]](<#trade-source-11>) |
| Connecticut | electrical | yes | https://portal.ct.gov/dcp/occupational-and-professional-division/occupational--profess/about-careers-in-the-trades | https://portal.ct.gov/dcp/occupational-and-professional-division/occupational--profess/about-careers-in-the-trades | 2026.10.14 | trade contracting or licensed responsible individual | DCP occupational-trades route; contractor and journeyperson categories depend on scope. | residential_trade | indexed_extract | [[12]](<#trade-source-12>) |
| Connecticut | plumbing | yes | https://portal.ct.gov/dcp/occupational-and-professional-division/occupational--profess/about-careers-in-the-trades | https://portal.ct.gov/dcp/occupational-and-professional-division/occupational--profess/about-careers-in-the-trades | 2026.10.14 | trade contracting or licensed responsible individual | DCP occupational-trades route; contractor and journeyperson categories depend on scope. | residential_trade | indexed_extract | [[12]](<#trade-source-12>) |
| Connecticut | HVAC | yes | https://portal.ct.gov/dcp/occupational-and-professional-division/occupational--profess/about-careers-in-the-trades | https://portal.ct.gov/dcp/occupational-and-professional-division/occupational--profess/about-careers-in-the-trades | 2026.10.14 | trade contracting or licensed responsible individual | DCP occupational-trades route; contractor and journeyperson categories depend on scope. | residential_trade | indexed_extract | [[12]](<#trade-source-12>) |
| Delaware | electrical | yes | https://dpr.delaware.gov/boards/electrician/newlicense/ | https://dpr.delaware.gov/boards/electrician/newlicense/ | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | indexed_extract | [[13]](<#trade-source-13>) |
| Delaware | plumbing | yes | https://dpr.delaware.gov/boards/plumbers/hvacrlicensure/ | https://dpr.delaware.gov/boards/plumbers/hvacrlicensure/ | 2026.10.14 | trade contracting or licensed responsible individual | Master HVACR does not replace Master Plumber authority for water-supply and waste piping. | residential_trade | indexed_extract | [[14]](<#trade-source-14>) |
| Delaware | HVAC | yes | https://dpr.delaware.gov/boards/plumbers/hvacrlicensure/ | https://dpr.delaware.gov/boards/plumbers/hvacrlicensure/ | 2026.10.14 | trade contracting or licensed responsible individual | Master HVACR does not replace Master Plumber authority for water-supply and waste piping. | residential_trade | indexed_extract | [[14]](<#trade-source-14>) |
| District of Columbia | electrical | yes | https://dlcp.dc.gov/page/board-industrial-trades-0 | https://dlcp.dc.gov/page/board-industrial-trades-0 | 2026.10.14 | trade contracting or licensed responsible individual | Board licenses electricians plumbers and refrigeration/air-conditioning mechanics; contractor and worker categories differ. | residential_trade | indexed_extract | [[15]](<#trade-source-15>) |
| District of Columbia | plumbing | yes | https://dlcp.dc.gov/page/board-industrial-trades-0 | https://dlcp.dc.gov/page/board-industrial-trades-0 | 2026.10.14 | trade contracting or licensed responsible individual | Board licenses electricians plumbers and refrigeration/air-conditioning mechanics; contractor and worker categories differ. | residential_trade | indexed_extract | [[15]](<#trade-source-15>) |
| District of Columbia | HVAC | yes | https://dlcp.dc.gov/page/board-industrial-trades-0 | https://dlcp.dc.gov/page/board-industrial-trades-0 | 2026.10.14 | trade contracting or licensed responsible individual | Board licenses electricians plumbers and refrigeration/air-conditioning mechanics; contractor and worker categories differ. | residential_trade | indexed_extract | [[15]](<#trade-source-15>) |
| Florida | electrical | yes | https://ula.myfloridalicense.com/what-requires-a-license/ | https://ula.myfloridalicense.com/what-requires-a-license/ | 2026.10.14 | state certified trade contractor | Compensated electrical work requires DBPR license, subject to statutory exemptions. | residential_trade | indexed_extract | [[16]](<#trade-source-16>) |
| Florida | plumbing | yes | https://www2.myfloridalicense.com/construction-industry/ | https://www2.myfloridalicense.com/construction-industry/ | 2026.10.14 | state certified trade contractor | Certified or registered plumbing contractor scope; exemptions and local registration routes differ. | residential_trade | indexed_extract | [[17]](<#trade-source-17>) |
| Florida | HVAC | yes | https://www.myfloridalicense.com/CheckListDetail.asp?XACT_DEFN_ID=18344&clientCode=0601&xactCode=1043 | https://www.myfloridalicense.com/CheckListDetail.asp?XACT_DEFN_ID=18344&clientCode=0601&xactCode=1043 | 2026.10.14 | air-conditioning contractor | Certified air-conditioning contractor route; exemptions and registered-contractor route separate. | residential_trade | indexed_extract | [[18]](<#trade-source-18>) |
| Georgia | electrical | yes | https://sos.ga.gov/page/about-georgia-state-board-electrical-contractors | https://sos.ga.gov/page/about-georgia-state-board-electrical-contractors | 2026.10.14 | trade contracting or licensed responsible individual | State Construction Industry Licensing Board has electrical conditioned-air and master/journeyman plumber divisions. | residential_trade | indexed_extract | [[19]](<#trade-source-19>) |
| Georgia | plumbing | yes | https://sos.ga.gov/georgia-state-division-master-and-journeyman-plumbers | https://sos.ga.gov/georgia-state-division-master-and-journeyman-plumbers | 2026.10.14 | trade contracting or licensed responsible individual | State Master and Journeyman Plumbers division; contractor authority and worker categories differ. | residential_trade | direct_text | [[20]](<#trade-source-20>) |
| Georgia | HVAC | yes | https://sos.ga.gov/page/about-board-conditioned-air-contractors | https://sos.ga.gov/page/about-board-conditioned-air-contractors | 2026.10.14 | trade contracting or licensed responsible individual | State Conditioned Air Contractors division; choose the classification appropriate to the work. | residential_trade | direct_text | [[21]](<#trade-source-21>) |
| Hawaii | electrical | yes | https://www.cca.hawaii.gov/pvl/hire-a-licensed-contractor/ | https://www.cca.hawaii.gov/pvl/hire-a-licensed-contractor/ | 2026.10.14 | trade contracting or licensed responsible individual | Licensed trade contractors must employ individually licensed workers. | residential_trade | indexed_extract | [[22]](<#trade-source-22>) |
| Hawaii | plumbing | yes | https://www.cca.hawaii.gov/pvl/hire-a-licensed-contractor/ | https://www.cca.hawaii.gov/pvl/hire-a-licensed-contractor/ | 2026.10.14 | trade contracting or licensed responsible individual | Licensed trade contractors must employ individually licensed workers. | residential_trade | indexed_extract | [[22]](<#trade-source-22>) |
| Hawaii | HVAC | yes | https://cca.hawaii.gov/wp-content/uploads/2026/03/con_170413.pdf | https://cca.hawaii.gov/wp-content/uploads/2026/03/con_170413.pdf | 2026.10.14 | C-52 ventilating/air-conditioning or C-40 refrigeration contracting | Board scope determination identifies required classification; contractor-law permit and value triggers still apply. | residential_trade | indexed_extract | [[23]](<#trade-source-23>) |
| Idaho | electrical | yes | https://dopl.idaho.gov/ele/ | https://dopl.idaho.gov/ele/ | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | direct_text | [[24]](<#trade-source-24>) |
| Idaho | plumbing | yes | https://dopl.idaho.gov/plb/ | https://dopl.idaho.gov/plb/ | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | direct_text | [[25]](<#trade-source-25>) |
| Idaho | HVAC | yes | https://dopl.idaho.gov/hvac/ | https://dopl.idaho.gov/hvac/ | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | direct_text | [[26]](<#trade-source-26>) |
| Illinois | electrical |  |  | https://cdb.illinois.gov/content/dam/soi/en/web/cdb/professionalgrowth/documents/contractor-training-handout-2023.pdf | 2026.10.14 | ordinary residential trade contracting | UNVERIFIED statewide yes/no. Do not infer absence from roofing/plumbing listings. Specialized state certifications may exist. | unresolved | indexed_extract | [[27]](<#trade-source-27>) |
| Illinois | plumbing | yes | https://dph.illinois.gov/content/dam/soi/en/web/idph/forms/topics-services/environmental-health-protection/plumbing/plumber-license-examination-application-06242021.pdf | https://dph.illinois.gov/content/dam/soi/en/web/idph/forms/topics-services/environmental-health-protection/plumbing/plumber-license-examination-application-06242021.pdf | 2026.10.14 | trade contracting or licensed responsible individual | State plumber license route; Chicago recognition rules require separate checking. | residential_trade | indexed_extract | [[28]](<#trade-source-28>) |
| Illinois | HVAC |  |  | https://cdb.illinois.gov/content/dam/soi/en/web/cdb/professionalgrowth/documents/contractor-training-handout-2023.pdf | 2026.10.14 | ordinary residential trade contracting | UNVERIFIED statewide yes/no. Do not infer absence from roofing/plumbing listings. Specialized state certifications may exist. | unresolved | indexed_extract | [[27]](<#trade-source-27>) |
| Indiana | electrical | no |  | https://www.in.gov/core/business_guide.html | 2026.10.14 | general trade contracting | Indiana business guide identifies plumbing as the only state-licensed construction trade. Local licensing applies. | local_only | indexed_extract | [[29]](<#trade-source-29>) |
| Indiana | plumbing | yes | https://www.in.gov/pla/professions/plumbing-home/plumbing-licensing-information/ | https://www.in.gov/pla/professions/plumbing-home/plumbing-licensing-information/ | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | indexed_extract | [[30]](<#trade-source-30>) |
| Indiana | HVAC | no |  | https://www.in.gov/core/business_guide.html | 2026.10.14 | general trade contracting | Indiana business guide identifies plumbing as the only state-licensed construction trade. Local licensing applies. | local_only | indexed_extract | [[29]](<#trade-source-29>) |
| Iowa | electrical | yes | https://dial.iowa.gov/licenses/building/electrical-licensing/electrical-licensing-faqs | https://dial.iowa.gov/licenses/building/electrical-licensing/electrical-licensing-faqs | 2026.10.14 | electrical contracting | State Electrical Contractor route requires licensed master qualification; owner work has stated exemptions. | residential_trade | indexed_extract | [[31]](<#trade-source-31>) |
| Iowa | plumbing | yes | https://dial.iowa.gov/licenses/building/plumbing-mechanical/plumbing-licensure/contractor-license | https://dial.iowa.gov/licenses/building/plumbing-mechanical/plumbing-licensure/contractor-license | 2026.10.14 | trade contracting or licensed responsible individual | Contractor license and licensed master-of-record requirements, subject to stated transition rules. | residential_trade | indexed_extract | [[32]](<#trade-source-32>) |
| Iowa | HVAC | yes | https://dial.iowa.gov/licenses/building/plumbing-mechanical/plumbing-licensure/contractor-license | https://dial.iowa.gov/licenses/building/plumbing-mechanical/plumbing-licensure/contractor-license | 2026.10.14 | trade contracting or licensed responsible individual | Contractor license and licensed master-of-record requirements, subject to stated transition rules. | residential_trade | indexed_extract | [[32]](<#trade-source-32>) |
| Kansas | electrical |  |  | https://www.kslegislature.gov/b2025_26/laws/012_000_0000_chapter/012_015_0000_article/012_015_0026_section/012_015_0026_k/ | 2026.10.14 | ordinary trade contracting | UNVERIFIED statewide yes/no. Local statutory licensing route verified; possible 2026 legislative transition needs reconciliation. | unresolved | indexed_extract | [[33]](<#trade-source-33>) |
| Kansas | plumbing |  |  | https://www.kslegislature.gov/li/m/statute/012_000_0000_chapter/012_015_0000_article/012_015_0010_section/012_015_0010_k.pdf | 2026.10.14 | ordinary trade contracting | UNVERIFIED statewide yes/no. Local statutory licensing route verified; possible 2026 legislative transition needs reconciliation. | unresolved | indexed_extract | [[34]](<#trade-source-34>) |
| Kansas | HVAC |  |  | https://portal.kansas.gov/services/business-and-industry/ | 2026.10.14 | ordinary trade contracting | UNVERIFIED statewide yes/no. Local statutory licensing route verified; possible 2026 legislative transition needs reconciliation. | unresolved | indexed_extract | [[35]](<#trade-source-35>) |
| Kentucky | electrical | yes | https://dhbc.ky.gov/Documents/KHBC_PlanSubmissionApplicationGuide.pdf | https://dhbc.ky.gov/Documents/KHBC_PlanSubmissionApplicationGuide.pdf | 2026.10.14 | trade contracting or licensed responsible individual | State guide expressly lists state license required for electrical plumbing and mechanical/HVAC installation contractors. | residential_trade | indexed_extract | [[36]](<#trade-source-36>) |
| Kentucky | plumbing | yes | https://dhbc.ky.gov/Documents/KHBC_PlanSubmissionApplicationGuide.pdf | https://dhbc.ky.gov/Documents/KHBC_PlanSubmissionApplicationGuide.pdf | 2026.10.14 | trade contracting or licensed responsible individual | State guide expressly lists state license required for electrical plumbing and mechanical/HVAC installation contractors. | residential_trade | indexed_extract | [[36]](<#trade-source-36>) |
| Kentucky | HVAC | yes | https://dhbc.ky.gov/Documents/KHBC_PlanSubmissionApplicationGuide.pdf | https://dhbc.ky.gov/Documents/KHBC_PlanSubmissionApplicationGuide.pdf | 2026.10.14 | trade contracting or licensed responsible individual | State guide expressly lists state license required for electrical plumbing and mechanical/HVAC installation contractors. | residential_trade | indexed_extract | [[36]](<#trade-source-36>) |
| Louisiana | electrical | yes | https://www.lslbc.louisiana.gov/types-of-licenses/ | https://www.lslbc.louisiana.gov/types-of-licenses/ | 2026.10.14 | board trade project licensing above $10,000 | Board identifies electrical mechanical and plumbing project licensing above $10,000. Plumbing worker/master rules separate. | project_threshold | direct_text | [[37]](<#trade-source-37>) |
| Louisiana | plumbing | yes | https://www.lslbc.louisiana.gov/types-of-licenses/ | https://www.lslbc.louisiana.gov/types-of-licenses/ | 2026.10.14 | board trade project licensing above $10,000 | Board identifies electrical mechanical and plumbing project licensing above $10,000. Plumbing worker/master rules separate. | project_threshold | direct_text | [[37]](<#trade-source-37>) |
| Louisiana | HVAC | yes | https://www.lslbc.louisiana.gov/types-of-licenses/ | https://www.lslbc.louisiana.gov/types-of-licenses/ | 2026.10.14 | board trade project licensing above $10,000 | Board identifies electrical mechanical and plumbing project licensing above $10,000. Plumbing worker/master rules separate. | project_threshold | direct_text | [[37]](<#trade-source-37>) |
| Maine | electrical | yes | https://www11.maine.gov/pfr/professionallicensing/professions/electricians | https://www11.maine.gov/pfr/professionallicensing/professions/electricians | 2026.10.14 | licensed electrical trade | Electricians Examining Board administers individual trade licensing and installation permits; exceptions apply. | residential_trade | direct_text | [[38]](<#trade-source-38>) |
| Maine | plumbing | yes | https://www.maine.gov/pfr/professionallicensing/professions/plumbers-examining-board | https://www.maine.gov/pfr/professionallicensing/professions/plumbers-examining-board | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | direct_text | [[39]](<#trade-source-39>) |
| Maine | HVAC |  | https://www.maine.gov/pfr/professionallicensing/professions/maine-fuel-board | https://www.maine.gov/pfr/professionallicensing/professions/maine-fuel-board | 2026.10.14 | oil solid-fuel propane and natural-gas heating | UNVERIFIED general residential HVAC licensing requirement. Source verifies a limited fuel, refrigeration, maintenance, or electrical specialty only. Limited scope flag: fuel-technician licensing does not establish a general air-conditioning license requirement. | limited_specialty | indexed_extract | [[40]](<#trade-source-40>) |
| Maryland | electrical | yes | https://labor.maryland.gov/license/elec/ | https://labor.maryland.gov/license/elec/ | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | direct_text | [[41]](<#trade-source-41>) |
| Maryland | plumbing | yes | https://labor.maryland.gov/license/pl/ | https://labor.maryland.gov/license/pl/ | 2026.10.14 | trade contracting or licensed responsible individual | State board excludes Baltimore County and WSSC service areas, which issue their own plumbing licenses. | residential_trade | direct_text | [[42]](<#trade-source-42>) |
| Maryland | HVAC | yes | https://www.labor.maryland.gov/license/hvacr/ | https://www.labor.maryland.gov/license/hvacr/ | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | indexed_extract | [[43]](<#trade-source-43>) |
| Massachusetts | electrical | yes | https://www.mass.gov/lists/board-policies-and-guidelines-examiners-of-electricians | https://www.mass.gov/lists/board-policies-and-guidelines-examiners-of-electricians | 2026.10.14 | licensed master/journeyman trade | Board advisory states for-hire electrical work requires licenses and permits, including irrigation/landscape wiring. | residential_trade | indexed_extract | [[44]](<#trade-source-44>) |
| Massachusetts | plumbing | yes | https://www.mass.gov/apply-for-a-plumber-gas-fitter-or-liquified-petroleum-installer-license | https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXX/Chapter142/Section3 | 2026.10.14 | licensed master/journeyman trade | M.G.L. chapter 142 section 3 requires registration/licensing for plumbing business and workers, with stated exceptions. | residential_trade | direct_text | [[45]](<#trade-source-45>) |
| Massachusetts | HVAC |  | https://www.mass.gov/how-to/apply-for-a-refrigeration-technician-license | https://www.mass.gov/how-to/apply-for-a-refrigeration-technician-license | 2026.10.14 | refrigeration technician | UNVERIFIED general residential HVAC licensing requirement. Source verifies a limited fuel, refrigeration, maintenance, or electrical specialty only. Limited scope flag: refrigeration license route verified; general HVAC installation and system-capacity exemptions not established. | limited_specialty | indexed_extract | [[46]](<#trade-source-46>) |
| Michigan | electrical | yes | https://www.michigan.gov/lara/bureau-list/bcc/forms/licensing | https://www.michigan.gov/lara/bureau-list/bcc/forms/licensing | 2026.10.14 | trade contracting or licensed responsible individual | Electrical mechanical and plumbing contractor examination/license applications listed. Applicable categories depend on work. | residential_trade | indexed_extract | [[47]](<#trade-source-47>) |
| Michigan | plumbing | yes | https://www.michigan.gov/lara/bureau-list/bcc/forms/licensing | https://www.michigan.gov/lara/bureau-list/bcc/forms/licensing | 2026.10.14 | trade contracting or licensed responsible individual | Electrical mechanical and plumbing contractor examination/license applications listed. Applicable categories depend on work. | residential_trade | indexed_extract | [[47]](<#trade-source-47>) |
| Michigan | HVAC | yes | https://www.michigan.gov/lara/bureau-list/bcc/forms/licensing | https://www.michigan.gov/lara/bureau-list/bcc/forms/licensing | 2026.10.14 | trade contracting or licensed responsible individual | Electrical mechanical and plumbing contractor examination/license applications listed. Applicable categories depend on work. | residential_trade | indexed_extract | [[47]](<#trade-source-47>) |
| Minnesota | electrical | yes | https://dli.mn.gov/business/electrical-contractors/electrical-contractor-licensing-basics | https://dli.mn.gov/business/electrical-contractors/electrical-contractor-licensing-basics | 2026.10.14 | trade contracting or licensed responsible individual | DLI expressly requires contractor licensing; licensed or registered supervised employees have separate categories. | residential_trade | direct_text | [[48]](<#trade-source-48>) |
| Minnesota | plumbing | yes | https://dli.mn.gov/business/plumbing-contractors/plumbing-contractor-licensing-basics | https://dli.mn.gov/business/plumbing-contractors/plumbing-contractor-licensing-basics | 2026.10.14 | trade contracting or licensed responsible individual | DLI expressly requires contractor licensing; licensed or registered supervised employees have separate categories. Restricted plumbing contractor licenses cover communities below 5,000 population; broader contractor licensing covers larger communities. | residential_trade | direct_text | [[49]](<#trade-source-49>) |
| Minnesota | HVAC | no | https://www.dli.mn.gov/business/plumbing-contractors/mechanical-contractor-bond-requirements | https://www.dli.mn.gov/business/plumbing-contractors/mechanical-contractor-bond-requirements | 2026.10.14 | trade contracting or licensed responsible individual | DLI expressly says no state mechanical-contractor license, but $25,000 bond filing is mandatory. Local licensing may apply. | local_only | indexed_extract | [[50]](<#trade-source-50>) |
| Mississippi | electrical | yes | https://www.msboc.us/classifications/ | https://www.msboc.us/wp-content/uploads/2023/01/Revised-residential-application-01262023.pdf | 2026.10.14 | residential life-safety trade subcontractor | Board fact sheet requires electrical plumbing and HVAC/mechanical residential subcontractor licensing independent of project dollar value. | residential_trade | indexed_extract | [[51]](<#trade-source-51>) |
| Mississippi | plumbing | yes | https://www.msboc.us/classifications/ | https://www.msboc.us/wp-content/uploads/2023/01/Revised-residential-application-01262023.pdf | 2026.10.14 | residential life-safety trade subcontractor | Board fact sheet requires electrical plumbing and HVAC/mechanical residential subcontractor licensing independent of project dollar value. | residential_trade | indexed_extract | [[51]](<#trade-source-51>) |
| Mississippi | HVAC | yes | https://www.msboc.us/classifications/ | https://www.msboc.us/wp-content/uploads/2023/01/Revised-residential-application-01262023.pdf | 2026.10.14 | residential life-safety trade subcontractor | Board fact sheet requires electrical plumbing and HVAC/mechanical residential subcontractor licensing independent of project dollar value. | residential_trade | indexed_extract | [[51]](<#trade-source-51>) |
| Missouri | electrical | no | https://pr.mo.gov/electricalcontractors-FAQ-Contractors.asp | https://pr.mo.gov/electricalcontractors-FAQ-Contractors.asp | 2026.10.14 | trade contracting or licensed responsible individual | Statewide electrical license is optional when local credentials suffice. State credential exists; no means not universally mandatory. | optional_state_license | indexed_extract | [[52]](<#trade-source-52>) |
| Missouri | plumbing |  |  | https://pr.mo.gov/electricalcontractors-FAQ-Contractors.asp | 2026.10.14 | ordinary trade contracting | UNVERIFIED statewide yes/no. Electrical-board FAQ does not establish plumbing or HVAC regulation. | unresolved | indexed_extract | [[52]](<#trade-source-52>) |
| Missouri | HVAC |  |  | https://pr.mo.gov/electricalcontractors-FAQ-Contractors.asp | 2026.10.14 | ordinary trade contracting | UNVERIFIED statewide yes/no. Electrical-board FAQ does not establish plumbing or HVAC regulation. | unresolved | indexed_extract | [[52]](<#trade-source-52>) |
| Montana | electrical | yes | https://boards.bsd.dli.mt.gov/electrical/license-information/electrical-contractor | https://boards.bsd.dli.mt.gov/electrical/license-information/electrical-contractor | 2026.10.14 | trade contracting or licensed responsible individual | State master electrician required as responsible party for electrical contractor. | residential_trade | indexed_extract | [[53]](<#trade-source-53>) |
| Montana | plumbing | yes | https://boards.bsd.dli.mt.gov/plumbers/ | https://boards.bsd.dli.mt.gov/plumbers/ | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | direct_text | [[54]](<#trade-source-54>) |
| Montana | HVAC |  |  | https://boards.bsd.dli.mt.gov/construction-contractor/ | 2026.10.14 | ordinary HVAC trade contracting | UNVERIFIED separate statewide HVAC license. Construction Contractor License requirement is separate. | unresolved | indexed_extract | [[55]](<#trade-source-55>) |
| Nebraska | electrical | yes | https://www.nebraska.gov/sed/lists/list.cgi | https://www.nebraska.gov/sed/lists/list.cgi | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | indexed_extract | [[56]](<#trade-source-56>) |
| Nebraska | plumbing |  |  | https://electrical.nebraska.gov/specialty-license-exam-sept-16-2026-and-oct-14-2026 | 2026.10.14 | ordinary trade contracting | UNVERIFIED separate statewide trade license. Electrical HVAC specialty credential concerns electrical scope only. | unresolved | indexed_extract | [[57]](<#trade-source-57>) |
| Nebraska | HVAC |  |  | https://electrical.nebraska.gov/specialty-license-exam-sept-16-2026-and-oct-14-2026 | 2026.10.14 | ordinary trade contracting | UNVERIFIED general residential HVAC licensing requirement. Source verifies a limited fuel, refrigeration, maintenance, or electrical specialty only. Electrical HVAC specialty credential concerns electrical scope only. | limited_specialty | indexed_extract | [[57]](<#trade-source-57>) |
| Nevada | electrical | yes | https://www.nvcontractorsboard.com/licensing/exemptions/ | https://www.nvcontractorsboard.com/licensing/exemptions/ | 2026.10.14 | trade contracting or licensed responsible individual | NRS repair exemption expressly excludes electrical plumbing heating refrigeration and air-conditioning work. | contractor_classification | direct_text | [[58]](<#trade-source-58>) |
| Nevada | plumbing | yes | https://www.nvcontractorsboard.com/licensing/exemptions/ | https://www.nvcontractorsboard.com/licensing/exemptions/ | 2026.10.14 | trade contracting or licensed responsible individual | NRS repair exemption expressly excludes electrical plumbing heating refrigeration and air-conditioning work. | contractor_classification | direct_text | [[58]](<#trade-source-58>) |
| Nevada | HVAC | yes | https://www.nvcontractorsboard.com/licensing/exemptions/ | https://www.nvcontractorsboard.com/licensing/exemptions/ | 2026.10.14 | trade contracting or licensed responsible individual | NRS repair exemption expressly excludes electrical plumbing heating refrigeration and air-conditioning work. | contractor_classification | direct_text | [[58]](<#trade-source-58>) |
| New Hampshire | electrical | yes | https://gc.nh.gov/rsa/html/XXX/319-C/319-C-2.htm | https://gc.nh.gov/rsa/html/XXX/319-C/319-C-2.htm | 2026.10.14 | electrical trade | RSA 319-C:2 requires journeyman employment by a New Hampshire licensed master or licensed entity; scope and exemptions apply. | residential_trade | direct_text | [[59]](<#trade-source-59>) |
| New Hampshire | plumbing | yes | https://www.oplc.nh.gov/sites/g/files/ehbemt441/files/inline-documents/plc-1002-adopted-rules.pdf | https://www.oplc.nh.gov/sites/g/files/ehbemt441/files/inline-documents/plc-1002-adopted-rules.pdf | 2026.10.14 | plumber | State mechanical-board licensing rules include plumbing categories. | residential_trade | indexed_extract | [[60]](<#trade-source-60>) |
| New Hampshire | HVAC |  | https://www.oplc.nh.gov/sites/g/files/ehbemt441/files/inline-documents/plc-1002-adopted-rules.pdf | https://www.oplc.nh.gov/sites/g/files/ehbemt441/files/inline-documents/plc-1002-adopted-rules.pdf | 2026.10.14 | fuel-gas fitting | UNVERIFIED general residential HVAC licensing requirement. Source verifies a limited fuel, refrigeration, maintenance, or electrical specialty only. Limited scope flag: fuel-gas fitter licensing; does not establish general air-conditioning licensing. | limited_specialty | indexed_extract | [[60]](<#trade-source-60>) |
| New Jersey | electrical | yes | https://www.njconsumeraffairs.gov/elec/pages/faq.aspx | https://www.njconsumeraffairs.gov/elec/pages/faq.aspx | 2026.10.14 | ordinary trade contracting | State electrical contractor licensure and business qualifier rules; one contractor may qualify only one entity. | residential_trade | indexed_extract | [[61]](<#trade-source-61>) |
| New Jersey | plumbing | yes | https://www.njconsumeraffairs.gov/plu/Pages/FAQ.aspx | https://www.njconsumeraffairs.gov/plu/Pages/FAQ.aspx | 2026.10.14 | ordinary trade contracting | Plumbing contractor bona-fide representative must be a licensed master plumber with required ownership. | residential_trade | indexed_extract | [[62]](<#trade-source-62>) |
| New Jersey | HVAC | yes | https://www.njconsumeraffairs.gov/hvacr/Pages/FAQ.aspx | https://www.njconsumeraffairs.gov/hvacr/Pages/FAQ.aspx | 2026.10.14 | Master HVACR contractor |  | residential_trade | indexed_extract | [[63]](<#trade-source-63>) |
| New Mexico | electrical | yes | https://www.rld.nm.gov/wp-content/uploads/2022/03/14.6.6_Classifications-and-Scopes_APPROVEDdb.pdf | https://www.rld.nm.gov/wp-content/uploads/2022/03/14.6.6_Classifications-and-Scopes_APPROVEDdb.pdf | 2026.10.14 | trade contracting or licensed responsible individual | State licensing classifications and journeyman certification; apprentices may work under required supervision. | contractor_classification | indexed_extract | [[64]](<#trade-source-64>) |
| New Mexico | plumbing | yes | https://www.rld.nm.gov/wp-content/uploads/2022/03/14.6.6_Classifications-and-Scopes_APPROVEDdb.pdf | https://www.rld.nm.gov/wp-content/uploads/2022/03/14.6.6_Classifications-and-Scopes_APPROVEDdb.pdf | 2026.10.14 | trade contracting or licensed responsible individual | State licensing classifications and journeyman certification; apprentices may work under required supervision. | contractor_classification | indexed_extract | [[64]](<#trade-source-64>) |
| New Mexico | HVAC | yes | https://www.rld.nm.gov/wp-content/uploads/2022/03/14.6.6_Classifications-and-Scopes_APPROVEDdb.pdf | https://www.rld.nm.gov/wp-content/uploads/2022/03/14.6.6_Classifications-and-Scopes_APPROVEDdb.pdf | 2026.10.14 | trade contracting or licensed responsible individual | State licensing classifications and journeyman certification; apprentices may work under required supervision. | contractor_classification | indexed_extract | [[64]](<#trade-source-64>) |
| New York | electrical | no |  | https://www.nyserda.ny.gov/-/media/Project/Nyserda/Files/Publications/Annual-Reports-and-Financial-Statements/2025-12-NYSERDA-Semi-Annual-Reports.pdf | 2026.10.14 | ordinary trade contracting | NYSERDA lists electrician/plumber credential issuer as Local Municipality and allows no-license jurisdictions. Local credentials and scope still apply. | local_only | indexed_extract | [[65]](<#trade-source-65>) |
| New York | plumbing | no |  | https://www.nyserda.ny.gov/-/media/Project/Nyserda/Files/Publications/Annual-Reports-and-Financial-Statements/2025-12-NYSERDA-Semi-Annual-Reports.pdf | 2026.10.14 | ordinary trade contracting | NYSERDA lists electrician/plumber credential issuer as Local Municipality and allows no-license jurisdictions. Local credentials and scope still apply. | local_only | indexed_extract | [[65]](<#trade-source-65>) |
| New York | HVAC |  |  | https://ag.ny.gov/resources/individuals/consumer-issues/contractors-home-maintenance | 2026.10.14 | ordinary HVAC contracting | UNVERIFIED statewide yes/no; state AG contractor guidance does not settle trade rules. | unresolved | indexed_extract | [[66]](<#trade-source-66>) |
| North Carolina | electrical | yes | https://www.ncbeec.org/ | https://www.ncbeec.org/ | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | direct_text | [[67]](<#trade-source-67>) |
| North Carolina | plumbing | yes | https://public.nclicensing.org/Public/Search | https://public.nclicensing.org/Public/Search | 2026.10.14 | trade contracting or licensed responsible individual | Board provides state plumbing and heating license verification; classification and work-scope exceptions apply. | residential_trade | indexed_extract | [[68]](<#trade-source-68>) |
| North Carolina | HVAC | yes | https://public.nclicensing.org/Public/Search | https://public.nclicensing.org/Public/Search | 2026.10.14 | trade contracting or licensed responsible individual | Board provides state plumbing and heating license verification; classification and work-scope exceptions apply. | residential_trade | indexed_extract | [[68]](<#trade-source-68>) |
| North Dakota | electrical | yes | https://www.sos.nd.gov/business/licensing-registration/contractors | https://www.sos.nd.gov/business/licensing-registration/contractors | 2026.10.14 | trade contracting or licensed responsible individual | Secretary of State identifies separate Electrical Board and Plumbing Board trade credentials. | residential_trade | direct_text | [[69]](<#trade-source-69>) |
| North Dakota | plumbing | yes | https://www.sos.nd.gov/business/licensing-registration/contractors | https://www.sos.nd.gov/business/licensing-registration/contractors | 2026.10.14 | trade contracting or licensed responsible individual | Secretary of State identifies separate Electrical Board and Plumbing Board trade credentials. | residential_trade | direct_text | [[69]](<#trade-source-69>) |
| North Dakota | HVAC |  |  | https://www.sos.nd.gov/business/licensing-registration/contractors | 2026.10.14 | ordinary HVAC contracting | UNVERIFIED separate HVAC license. Secretary of State contractor license may still apply above project threshold. | unresolved | direct_text | [[69]](<#trade-source-69>) |
| Ohio | electrical |  | https://com.ohio.gov/divisions-and-programs/industrial-compliance/boards/ohio-construction-industry-licensing-board/contractors-and-contracting-companies | https://com.ohio.gov/divisions-and-programs/industrial-compliance/boards/ohio-construction-industry-licensing-board/contractors-and-contracting-companies | 2026.10.14 | commercial trade contracting | UNVERIFIED residential state-level requirement. Source verifies state OCILB licensing for commercial trade contracting only; do not render that commercial credential as a residential yes. | commercial_only | indexed_extract | [[70]](<#trade-source-70>) |
| Ohio | plumbing |  | https://com.ohio.gov/divisions-and-programs/industrial-compliance/boards/ohio-construction-industry-licensing-board/contractors-and-contracting-companies | https://com.ohio.gov/divisions-and-programs/industrial-compliance/boards/ohio-construction-industry-licensing-board/contractors-and-contracting-companies | 2026.10.14 | commercial trade contracting | UNVERIFIED residential state-level requirement. Source verifies state OCILB licensing for commercial trade contracting only; do not render that commercial credential as a residential yes. | commercial_only | indexed_extract | [[70]](<#trade-source-70>) |
| Ohio | HVAC |  | https://com.ohio.gov/divisions-and-programs/industrial-compliance/boards/ohio-construction-industry-licensing-board/contractors-and-contracting-companies | https://com.ohio.gov/divisions-and-programs/industrial-compliance/boards/ohio-construction-industry-licensing-board/contractors-and-contracting-companies | 2026.10.14 | commercial trade contracting | UNVERIFIED residential state-level requirement. Source verifies state OCILB licensing for commercial trade contracting only; do not render that commercial credential as a residential yes. | commercial_only | indexed_extract | [[70]](<#trade-source-70>) |
| Oklahoma | electrical | yes | https://www.oklahoma.gov/cib.html | https://www.oklahoma.gov/cib.html | 2026.10.14 | trade contracting or licensed responsible individual | State CIB regulates electrical plumbing and mechanical trade work; general-contractor exemption does not cover these trades. | residential_trade | indexed_extract | [[71]](<#trade-source-71>) |
| Oklahoma | plumbing | yes | https://www.oklahoma.gov/cib.html | https://www.oklahoma.gov/cib.html | 2026.10.14 | trade contracting or licensed responsible individual | State CIB regulates electrical plumbing and mechanical trade work; general-contractor exemption does not cover these trades. | residential_trade | indexed_extract | [[71]](<#trade-source-71>) |
| Oklahoma | HVAC | yes | https://www.oklahoma.gov/cib.html | https://www.oklahoma.gov/cib.html | 2026.10.14 | trade contracting or licensed responsible individual | State CIB regulates electrical plumbing and mechanical trade work; general-contractor exemption does not cover these trades. | residential_trade | indexed_extract | [[71]](<#trade-source-71>) |
| Oregon | electrical | yes | https://www.oregon.gov/bcd/licensing/pages/contractor-licenses.aspx | https://www.oregon.gov/bcd/licensing/pages/contractor-licenses.aspx | 2026.10.14 | applicable BCD trade/business classification | BCD electrical/plumbing and limited-maintenance HVAC/R credentials differ. CCB contractor license also applies. | residential_trade | indexed_extract | [[72]](<#trade-source-72>) |
| Oregon | plumbing | yes | https://www.oregon.gov/bcd/licensing/pages/contractor-licenses.aspx | https://www.oregon.gov/bcd/licensing/pages/contractor-licenses.aspx | 2026.10.14 | applicable BCD trade/business classification | BCD electrical/plumbing and limited-maintenance HVAC/R credentials differ. CCB contractor license also applies. | residential_trade | indexed_extract | [[72]](<#trade-source-72>) |
| Oregon | HVAC |  | https://www.oregon.gov/bcd/licensing/pages/contractor-licenses.aspx | https://www.oregon.gov/bcd/licensing/pages/contractor-licenses.aspx | 2026.10.14 | applicable BCD trade/business classification | UNVERIFIED general residential HVAC licensing requirement. Source verifies a limited fuel, refrigeration, maintenance, or electrical specialty only. BCD electrical/plumbing and limited-maintenance HVAC/R credentials differ. CCB contractor license also applies. | limited_specialty | indexed_extract | [[72]](<#trade-source-72>) |
| Pennsylvania | electrical | no | https://www.pa.gov/agencies/dli/programs-services/labor-management-relations/bureau-of-occupational-and-industrial-safety/uniform-construction-code-home/contractor-licensing | https://www.pa.gov/agencies/dli/programs-services/labor-management-relations/bureau-of-occupational-and-industrial-safety/uniform-construction-code-home/contractor-licensing | 2026.10.14 | trade contracting or licensed responsible individual | State DLI says most construction trades have no state license. Local licenses and HICPA registration can still apply. | local_only | indexed_extract | [[73]](<#trade-source-73>) |
| Pennsylvania | plumbing | no | https://www.pa.gov/agencies/dli/programs-services/labor-management-relations/bureau-of-occupational-and-industrial-safety/uniform-construction-code-home/contractor-licensing | https://www.pa.gov/agencies/dli/programs-services/labor-management-relations/bureau-of-occupational-and-industrial-safety/uniform-construction-code-home/contractor-licensing | 2026.10.14 | trade contracting or licensed responsible individual | State DLI says most construction trades have no state license. Local licenses and HICPA registration can still apply. | local_only | indexed_extract | [[73]](<#trade-source-73>) |
| Pennsylvania | HVAC | no | https://www.pa.gov/agencies/dli/programs-services/labor-management-relations/bureau-of-occupational-and-industrial-safety/uniform-construction-code-home/contractor-licensing | https://www.pa.gov/agencies/dli/programs-services/labor-management-relations/bureau-of-occupational-and-industrial-safety/uniform-construction-code-home/contractor-licensing | 2026.10.14 | trade contracting or licensed responsible individual | State DLI says most construction trades have no state license. Local licenses and HICPA registration can still apply. | local_only | indexed_extract | [[73]](<#trade-source-73>) |
| Rhode Island | electrical | yes | https://dlt.ri.gov/regulation-and-safety/professional-regulation/trade-license-applications-study-materials?language=en | https://dlt.ri.gov/regulation-and-safety/professional-regulation/trade-license-applications-study-materials?language=en | 2026.10.14 | trade contracting or licensed responsible individual | DLT licenses electrical plumbing and mechanical trades. Master contractor insurance requirements are separate. | residential_trade | indexed_extract | [[74]](<#trade-source-74>) |
| Rhode Island | plumbing | yes | https://dlt.ri.gov/regulation-and-safety/professional-regulation/trade-license-applications-study-materials?language=en | https://dlt.ri.gov/regulation-and-safety/professional-regulation/trade-license-applications-study-materials?language=en | 2026.10.14 | trade contracting or licensed responsible individual | DLT licenses electrical plumbing and mechanical trades. Master contractor insurance requirements are separate. | residential_trade | indexed_extract | [[74]](<#trade-source-74>) |
| Rhode Island | HVAC | yes | https://dlt.ri.gov/regulation-and-safety/professional-regulation/trade-license-applications-study-materials?language=en | https://dlt.ri.gov/regulation-and-safety/professional-regulation/trade-license-applications-study-materials?language=en | 2026.10.14 | trade contracting or licensed responsible individual | DLT licenses electrical plumbing and mechanical trades. Master contractor insurance requirements are separate. | residential_trade | indexed_extract | [[74]](<#trade-source-74>) |
| South Carolina | electrical | yes | https://llr.sc.gov/res/licensure.aspx | https://llr.sc.gov/res/licensure.aspx | 2026.10.14 | residential specialty trade contracting | Residential Commission identifies separate Electrical Plumbing and HVAC contractor license routes. | residential_trade | indexed_extract | [[75]](<#trade-source-75>) |
| South Carolina | plumbing | yes | https://llr.sc.gov/res/licensure.aspx | https://llr.sc.gov/res/licensure.aspx | 2026.10.14 | residential specialty trade contracting | Residential Commission identifies separate Electrical Plumbing and HVAC contractor license routes. | residential_trade | indexed_extract | [[75]](<#trade-source-75>) |
| South Carolina | HVAC | yes | https://llr.sc.gov/res/licensure.aspx | https://llr.sc.gov/res/licensure.aspx | 2026.10.14 | residential specialty trade contracting | Residential Commission identifies separate Electrical Plumbing and HVAC contractor license routes. | residential_trade | indexed_extract | [[75]](<#trade-source-75>) |
| South Dakota | electrical | yes | https://dlr.sd.gov/electrical/licensing.aspx | https://dlr.sd.gov/electrical/licensing.aspx | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | indexed_extract | [[76]](<#trade-source-76>) |
| South Dakota | plumbing | yes | https://dlr.sd.gov/plumbing/licensing.aspx | https://dlr.sd.gov/plumbing/licensing.aspx | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | indexed_extract | [[77]](<#trade-source-77>) |
| South Dakota | HVAC |  |  | https://dlr.sd.gov/electrical/licensing.aspx | 2026.10.14 | ordinary HVAC contracting | UNVERIFIED statewide yes/no. Electrical/plumbing licensing pages do not establish HVAC absence. | unresolved | indexed_extract | [[76]](<#trade-source-76>) |
| Tennessee | electrical | yes | https://www.tn.gov/content/dam/tn/commerce/documents/regboards/contractors/forms/ContLicenseApplicationWeb.pdf | https://www.tn.gov/content/dam/tn/commerce/documents/regboards/contractors/forms/ContLicenseApplicationWeb.pdf | 2026.10.14 | contractor trade classification for covered projects | CE electrical CMC-A plumbing and CMC-C HVAC classifications. Contractor licensing threshold applies; lower-dollar electrical/plumbing programs separate. | project_threshold | indexed_extract | [[78]](<#trade-source-78>) |
| Tennessee | plumbing | yes | https://www.tn.gov/content/dam/tn/commerce/documents/regboards/contractors/forms/ContLicenseApplicationWeb.pdf | https://www.tn.gov/content/dam/tn/commerce/documents/regboards/contractors/forms/ContLicenseApplicationWeb.pdf | 2026.10.14 | contractor trade classification for covered projects | CE electrical CMC-A plumbing and CMC-C HVAC classifications. Contractor licensing threshold applies; lower-dollar electrical/plumbing programs separate. | project_threshold | indexed_extract | [[78]](<#trade-source-78>) |
| Tennessee | HVAC | yes | https://www.tn.gov/content/dam/tn/commerce/documents/regboards/contractors/forms/ContLicenseApplicationWeb.pdf | https://www.tn.gov/content/dam/tn/commerce/documents/regboards/contractors/forms/ContLicenseApplicationWeb.pdf | 2026.10.14 | contractor trade classification for covered projects | CE electrical CMC-A plumbing and CMC-C HVAC classifications. Contractor licensing threshold applies; lower-dollar electrical/plumbing programs separate. | project_threshold | indexed_extract | [[78]](<#trade-source-78>) |
| Texas | electrical | yes | https://www.tdlr.texas.gov/electricians/exemptions.htm | https://www.tdlr.texas.gov/electricians/exemptions.htm | 2026.10.14 | trade contracting or licensed responsible individual | State Electrical Safety and Licensing Act with listed exceptions. | residential_trade | indexed_extract | [[79]](<#trade-source-79>) |
| Texas | plumbing | yes | https://tsbpe.texas.gov/wp-content/uploads/documents/TSBPE_PlumbingLicenseLaw%28PlainView%29_June2023.pdf | https://tsbpe.texas.gov/wp-content/uploads/documents/TSBPE_PlumbingLicenseLaw%28PlainView%29_June2023.pdf | 2026.10.14 | plumbing contractor / responsible master | Plumbing License Law requires appropriate license/registration and supervision, subject to exemptions. Responsible master authority separate. | residential_trade | indexed_extract | [[80]](<#trade-source-80>) |
| Texas | HVAC | yes | https://www.tdlr.texas.gov/acr/ | https://www.tdlr.texas.gov/acr/ | 2026.10.14 | trade contracting or licensed responsible individual | TDLR states installation repair and maintenance of heating/air-conditioning/refrigeration systems require license, subject to exceptions. | residential_trade | indexed_extract | [[81]](<#trade-source-81>) |
| Utah | electrical | yes | https://commerce.utah.gov/dopl/electrical/apply-for-a-license/residential-master-electrician/ | https://commerce.utah.gov/dopl/electrical/apply-for-a-license/residential-master-electrician/ | 2026.10.14 | trade contractor or responsible individual | Residential Master Electrician state licensure; contractor entity and individual categories differ. | residential_trade | indexed_extract | [[82]](<#trade-source-82>) |
| Utah | plumbing | yes | https://commerce.utah.gov/dopl/plumbing/apply-for-a-master-plumber-license/ | https://commerce.utah.gov/dopl/plumbing/apply-for-a-master-plumber-license/ | 2026.10.14 | trade contractor or responsible individual | Master Plumber state licensure; contractor entity and individual categories differ. | residential_trade | indexed_extract | [[83]](<#trade-source-83>) |
| Utah | HVAC | yes | https://commerce.utah.gov/dopl/contracting/ | https://commerce.utah.gov/dopl/contracting/ | 2026.10.14 | H100 HVAC Contractor | New H100 application requirements begin April 20, 2026; exam certification and experience requirements apply. | residential_trade | direct_text | [[84]](<#trade-source-84>) |
| Vermont | electrical | yes | https://firesafety.vermont.gov/licensing/licenses-web-portal | https://firesafety.vermont.gov/licensing/licenses-web-portal | 2026.10.14 | trade contracting or licensed responsible individual | Division administers electrical and plumbing trade licenses; initial applications separate from renewals. | residential_trade | indexed_extract | [[85]](<#trade-source-85>) |
| Vermont | plumbing | yes | https://firesafety.vermont.gov/licensing/licenses-web-portal | https://firesafety.vermont.gov/licensing/licenses-web-portal | 2026.10.14 | trade contracting or licensed responsible individual | Division administers electrical and plumbing trade licenses; initial applications separate from renewals. | residential_trade | indexed_extract | [[85]](<#trade-source-85>) |
| Vermont | HVAC |  | https://firesafety.vermont.gov/licensing/gas-certifications | https://firesafety.vermont.gov/licensing/gas-certifications | 2026.10.14 | natural and propane gas installation certification | UNVERIFIED general residential HVAC licensing requirement. Source verifies a limited fuel, refrigeration, maintenance, or electrical specialty only. Limited scope flag: fuel-gas installer certification is not a blanket air-conditioning credential. | limited_specialty | indexed_extract | [[86]](<#trade-source-86>) |
| Virginia | electrical | yes | https://www.dpor.virginia.gov/index.php/Boards/Tradesmen | https://www.dpor.virginia.gov/index.php/Boards/Tradesmen | 2026.10.14 | trade contracting or licensed responsible individual | Individual electrical plumbing and HVAC tradesmen credentials; contractor business licenses are separate. | residential_trade | indexed_extract | [[87]](<#trade-source-87>) |
| Virginia | plumbing | yes | https://www.dpor.virginia.gov/index.php/Boards/Tradesmen | https://www.dpor.virginia.gov/index.php/Boards/Tradesmen | 2026.10.14 | trade contracting or licensed responsible individual | Individual electrical plumbing and HVAC tradesmen credentials; contractor business licenses are separate. | residential_trade | indexed_extract | [[87]](<#trade-source-87>) |
| Virginia | HVAC | yes | https://www.dpor.virginia.gov/index.php/Boards/Tradesmen | https://www.dpor.virginia.gov/index.php/Boards/Tradesmen | 2026.10.14 | trade contracting or licensed responsible individual | Individual electrical plumbing and HVAC tradesmen credentials; contractor business licenses are separate. | residential_trade | indexed_extract | [[87]](<#trade-source-87>) |
| Washington | electrical | yes | https://lni.wa.gov/es/forms-publications/F500-018-000.pdf | https://lni.wa.gov/es/forms-publications/F500-018-000.pdf | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | indexed_extract | [[88]](<#trade-source-88>) |
| Washington | plumbing | yes | https://electricalcurrents.lni.wa.gov/licensing-permits/plumbing/licensed-plumbing-contractor/licensing-requirements | https://electricalcurrents.lni.wa.gov/licensing-permits/plumbing/licensed-plumbing-contractor/licensing-requirements | 2026.10.14 | trade contracting or licensed responsible individual | Separate plumbing contractor license required since July 1, 2021. | residential_trade | indexed_extract | [[89]](<#trade-source-89>) |
| Washington | HVAC |  | https://lni.wa.gov/es/forms-publications/F500-018-000.pdf | https://lni.wa.gov/es/forms-publications/F500-018-000.pdf | 2026.10.14 | 06A HVAC/refrigeration electrical contracting | UNVERIFIED general residential HVAC licensing requirement. Source verifies a limited fuel, refrigeration, maintenance, or electrical specialty only. Limited scope flag: electrical specialty license; general HVAC construction registration is separate. | limited_specialty | indexed_extract | [[88]](<#trade-source-88>) |
| West Virginia | electrical | yes | https://firemarshal.wv.gov/regulatory-and-licensing-division | https://firemarshal.wv.gov/regulatory-and-licensing-division | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | indexed_extract | [[90]](<#trade-source-90>) |
| West Virginia | plumbing | yes | https://labor.wv.gov/licensing/plumber-certification/plumber-certification-faq | https://labor.wv.gov/licensing/plumber-certification/plumber-certification-faq | 2026.10.14 | individual plumber certification | Individual certification applies independent of project value or employer contractor license. | residential_trade | indexed_extract | [[91]](<#trade-source-91>) |
| West Virginia | HVAC | yes | https://labor.wv.gov/licensing/hvac-technician-certification/hvac-certification-faq | https://labor.wv.gov/licensing/hvac-technician-certification/hvac-certification-faq | 2026.10.14 | individual HVAC technician certification | Individual certification applies independent of project value or employer contractor license. | residential_trade | indexed_extract | [[92]](<#trade-source-92>) |
| Wisconsin | electrical | yes | https://dsps.wi.gov/a-z-professions-list/electrical-contractor/licensure-by-examination/ | https://dsps.wi.gov/a-z-professions-list/electrical-contractor/licensure-by-examination/ | 2026.10.14 | trade contracting or licensed worker | State Electrical Contractor credential under SPS 305; responsible-person and worker rules separate. | residential_trade | indexed_extract | [[93]](<#trade-source-93>) |
| Wisconsin | plumbing | yes | https://dsps.wi.gov/a-z-professions-list/master-plumber/licensure-by-examination/ | https://dsps.wi.gov/a-z-professions-list/master-plumber/licensure-by-examination/ | 2026.10.14 | trade contracting or licensed worker | State Master Plumber licensure under SPS 305; restricted and worker categories differ. | residential_trade | indexed_extract | [[94]](<#trade-source-94>) |
| Wisconsin | HVAC | no | https://dsps.wi.gov/Credentialing/Trades/fm3121.pdf | https://dsps.wi.gov/Credentialing/Trades/fm3121.pdf | 2026.10.14 | HVAC business registration | Mandatory HVAC Contractor registration under SPS 305.70, with exceptions. No means this mandatory credential is registration, not a license. | registration_only | indexed_extract | [[95]](<#trade-source-95>) |
| Wyoming | electrical | yes | https://wsfm.wyo.gov/electrical-safety/licensing | https://wsfm.wyo.gov/electrical-safety/licensing | 2026.10.14 | trade contracting or licensed responsible individual |  | residential_trade | indexed_extract | [[96]](<#trade-source-96>) |
| Wyoming | plumbing | no |  | https://wyomingbusiness.org/business/start/startup-resources/ | 2026.10.14 | trade contractor business licensing | Wyoming Business Council says contractor licensing except electrical is local. | local_only | indexed_extract | [[97]](<#trade-source-97>) |
| Wyoming | HVAC | no |  | https://wyomingbusiness.org/business/start/startup-resources/ | 2026.10.14 | trade contractor business licensing | Wyoming Business Council says contractor licensing except electrical is local. | local_only | indexed_extract | [[97]](<#trade-source-97>) |

## Trade column definitions

- **State:** Full jurisdiction name. District of Columbia is included once.
- **Trade:** `electrical`, `plumbing`, or `HVAC`.
- **State level license required:** `yes`: a state residential trade license or mandatory professional certification applies within the stated scope. `no`: the stated residential trade route has no mandatory state license, or uses registration instead. Empty: unverified, limited-specialty evidence only, or commercial evidence only.
- **Board url:** Official board/program page, licensing instructions, or board-hosted rule document. Empty when no state board applies or its relevant URL was not established.
- **Source url:** Primary sources supporting populated values, or inspected official material for unresolved rows. Split multiple URLs on `|`.
- **Retrieved date:** Inspection date in `YYYY.MM.DD` form. Source publication dates may be older.
- **Scope:** Work and credential covered by the yes/no value.
- **Notes:** Scope, exemptions, conflicts, source limitations, and unfilled fields.
- **Scope type:** Machine-readable category: `residential_trade`, `contractor_classification`, `project_threshold`, `limited_specialty`, `commercial_only`, `registration_only`, `optional_state_license`, `local_only`, or `unresolved`.
- **Evidence access:** Source access: direct_text means directly inspected text; indexed_extract means direct reading was not established; mixed combines both. Not a current-law certification.

## Trade sources

<a id="trade-source-1"></a>

1. https://aecb.alabama.gov/ (Retrieved October 14, 2026).

<a id="trade-source-2"></a>

2. https://pgfb.alabama.gov/applicants/how-do-i-become-licensed/ (Retrieved October 14, 2026).

<a id="trade-source-3"></a>

3. https://hacr.alabama.gov/how-to-get-licensed/ (Retrieved October 14, 2026).

<a id="trade-source-4"></a>

4. https://www.commerce.alaska.gov/web/cbpl/professionallicensing/electricaladministrators/licenseapplications.aspx (Retrieved October 14, 2026).

<a id="trade-source-5"></a>

5. https://www.commerce.alaska.gov/web/cbpl/ProfessionalLicensing/ConstructionContractors (Retrieved October 14, 2026).

<a id="trade-source-6"></a>

6. https://roc.az.gov/license-classifications (Retrieved October 14, 2026).

<a id="trade-source-7"></a>

7. https://labor.arkansas.gov/wp-content/uploads/Commercial-Contractors-Law-revised-04.2026.pdf (Retrieved October 14, 2026).

<a id="trade-source-8"></a>

8. https://labor.arkansas.gov/labor/code-enforcement/hvac-r/ (Retrieved October 14, 2026).

<a id="trade-source-9"></a>

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35. https://portal.kansas.gov/services/business-and-industry/ (Retrieved October 14, 2026).

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37. https://www.lslbc.louisiana.gov/types-of-licenses/ (Retrieved October 14, 2026).

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39. https://www.maine.gov/pfr/professionallicensing/professions/plumbers-examining-board (Retrieved October 14, 2026).

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40. https://www.maine.gov/pfr/professionallicensing/professions/maine-fuel-board (Retrieved October 14, 2026).

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44. https://www.mass.gov/lists/board-policies-and-guidelines-examiners-of-electricians (Retrieved October 14, 2026).

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45. https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXX/Chapter142/Section3 (Retrieved October 14, 2026).

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46. https://www.mass.gov/how-to/apply-for-a-refrigeration-technician-license (Retrieved October 14, 2026).

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51. https://www.msboc.us/wp-content/uploads/2023/01/Revised-residential-application-01262023.pdf (Retrieved October 14, 2026).

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60. https://www.oplc.nh.gov/sites/g/files/ehbemt441/files/inline-documents/plc-1002-adopted-rules.pdf (Retrieved October 14, 2026).

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61. https://www.njconsumeraffairs.gov/elec/pages/faq.aspx (Retrieved October 14, 2026).

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62. https://www.njconsumeraffairs.gov/plu/Pages/FAQ.aspx (Retrieved October 14, 2026).

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63. https://www.njconsumeraffairs.gov/hvacr/Pages/FAQ.aspx (Retrieved October 14, 2026).

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64. https://www.rld.nm.gov/wp-content/uploads/2022/03/14.6.6_Classifications-and-Scopes_APPROVEDdb.pdf (Retrieved October 14, 2026).

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65. https://www.nyserda.ny.gov/-/media/Project/Nyserda/Files/Publications/Annual-Reports-and-Financial-Statements/2025-12-NYSERDA-Semi-Annual-Reports.pdf (Retrieved October 14, 2026).

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66. https://ag.ny.gov/resources/individuals/consumer-issues/contractors-home-maintenance (Retrieved October 14, 2026).

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67. https://www.ncbeec.org/ (Retrieved October 14, 2026).

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69. North Dakota Secretary of State. (n.d.). *North Dakota: Contractors*. Retrieved October 14, 2026, from https://www.sos.nd.gov/business/licensing-registration/contractors

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71. https://www.oklahoma.gov/cib.html (Retrieved October 14, 2026).

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72. https://www.oregon.gov/bcd/licensing/pages/contractor-licenses.aspx (Retrieved October 14, 2026).

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73. https://www.pa.gov/agencies/dli/programs-services/labor-management-relations/bureau-of-occupational-and-industrial-safety/uniform-construction-code-home/contractor-licensing (Retrieved October 14, 2026).

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74. https://dlt.ri.gov/regulation-and-safety/professional-regulation/trade-license-applications-study-materials?language=en (Retrieved October 14, 2026).

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75. https://llr.sc.gov/res/licensure.aspx (Retrieved October 14, 2026).

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76. https://dlr.sd.gov/electrical/licensing.aspx (Retrieved October 14, 2026).

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77. https://dlr.sd.gov/plumbing/licensing.aspx (Retrieved October 14, 2026).

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97. https://wyomingbusiness.org/business/start/startup-resources/ (Retrieved October 14, 2026).

## Build your connections

[Ask about the beta](</beta/>)

## Sources

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33. https://www.in.gov/core/business_guide.html (Retrieved October 14, 2026).

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35. https://dial.iowa.gov/licenses/building/contractors/how-do-i-contractor-registration (Retrieved October 14, 2026).

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36. https://www.kslegislature.gov/b2025_26/laws/012_000_0000_chapter/012_015_0000_article/012_015_0057_section/012_015_0057_k/ (Retrieved October 14, 2026).

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37. https://dhbc.ky.gov/Documents/KHBC_PlanSubmissionApplicationGuide.pdf (Retrieved October 14, 2026).

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58. https://www.nvcontractorsboard.com/licensing/faq-for-general-requirements/ (Retrieved October 14, 2026).

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59. https://gc.nh.gov/statstudcomm/pdf.aspx?legid=1352&sy=2026 (Retrieved October 14, 2026).

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60. https://www.njconsumeraffairs.gov/HIC/ (Retrieved October 14, 2026).

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61. https://www.rld.nm.gov/uploads/files/CID%20Licensing%20Act%208%2013.pdf (Retrieved October 14, 2026).

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62. https://www.rld.nm.gov/construction-industries/apply-for-a-construction-industries-license/ (Retrieved October 14, 2026).

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63. https://ag.ny.gov/resources/individuals/consumer-issues/contractors-home-maintenance (Retrieved October 14, 2026).

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64. https://www.nyc.gov/site/dca/businesses/license-checklist-home-improvement-contractor.page (Retrieved October 14, 2026).

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65. North Carolina Licensing Board for General Contractors. (n.d.). *North Carolina: FAQ for consumers*. Retrieved October 14, 2026, from https://nclbgc.org/faq-consumers/

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66. https://nclbgc.org/wp-content/uploads/2020/04/New-Application-April-2020-Fillable.pdf (Retrieved October 14, 2026).

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67. North Dakota Secretary of State. (n.d.). *North Dakota: Contractors*. Retrieved October 14, 2026, from https://www.sos.nd.gov/business/licensing-registration/contractors

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68. https://com.ohio.gov/divisions-and-programs/industrial-compliance/boards/ohio-construction-industry-licensing-board/contractors-and-contracting-companies (Retrieved October 14, 2026).

<a id="dataset-source-69"></a>

69. https://www.oklahoma.gov/cib.html (Retrieved October 14, 2026).

<a id="dataset-source-70"></a>

70. https://www.oregon.gov/bcd/lbdd/pages/licensed-work.aspx (Retrieved October 14, 2026).

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71. https://apps.oregon.gov/SOS/LicenseDirectory/LicenseDetail/620 (Retrieved October 14, 2026).

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72. https://apps.oregon.gov/SOS/LicenseDirectory/LicenseDetail/188 (Retrieved October 14, 2026).

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73. https://www.oregon.gov/ccb/Pages/Licensing.aspx (Retrieved October 14, 2026).

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74. https://www.oregon.gov/ccb/Pages/CCB%20License.aspx (Retrieved October 14, 2026).

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75. https://www.attorneygeneral.gov/businesses-and-organizations/home-improvement-contractor-registration/ (Retrieved October 14, 2026).

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76. https://www.attorneygeneral.gov/businesses-and-organizations/home-improvement-contractor-registration/frequently-asked-questions/ (Retrieved October 14, 2026).

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77. https://www.pa.gov/agencies/dli/programs-services/labor-management-relations/bureau-of-occupational-and-industrial-safety/uniform-construction-code-home/contractor-licensing (Retrieved October 14, 2026).

<a id="dataset-source-78"></a>

78. https://crb.ri.gov/contractor-registration/faqs (Retrieved October 14, 2026).

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79. https://crb.ri.gov/general-contractor-registration/apply (Retrieved October 14, 2026).

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80. Residential Builders Commission, Department of Labor Licensing and Regulation. (n.d.). *South Carolina: Residential builder licensing*. Retrieved October 14, 2026, from https://www.llr.sc.gov/res/resbuilder.aspx

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81. https://www.llr.sc.gov/res/exam.aspx (Retrieved October 14, 2026).

<a id="dataset-source-82"></a>

82. https://llr.sc.gov/res/PDF/FAQ/residential%20builder%20FAQ.pdf (Retrieved October 14, 2026).

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83. https://dor.sd.gov/media/r14irlvd/self-contractors.pdf (Retrieved October 14, 2026).

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84. Tennessee Board for Licensing Contractors. (n.d.). *Tennessee: Contractor license*. Retrieved October 14, 2026, from https://www.tn.gov/commerce/regboards/contractors/license/get/contractor.html

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85. https://www.tn.gov/commerce/regboards/contractors/license/get/home-improvement.html (Retrieved October 14, 2026).

<a id="dataset-source-86"></a>

86. https://www.tn.gov/content/dam/tn/commerce/documents/regboards/contractors/forms/ContLicenseApplicationWeb.pdf (Retrieved October 14, 2026).

<a id="dataset-source-87"></a>

87. https://gov.texas.gov/uploads/files/business/2020TexasLicensesPermits.pdf (Retrieved October 14, 2026).

<a id="dataset-source-88"></a>

88. https://commerce.utah.gov/dopl/contracting/ (Retrieved October 14, 2026).

<a id="dataset-source-89"></a>

89. https://commerce.utah.gov/dopl/contracting/exam-information/ (Retrieved October 14, 2026).

<a id="dataset-source-90"></a>

90. https://sos.vermont.gov/residential-contractors/apply-renew (Retrieved October 14, 2026).

<a id="dataset-source-91"></a>

91. https://sos.vermont.gov/residential-contractors/residential-contractor-faqs (Retrieved October 14, 2026).

<a id="dataset-source-92"></a>

92. https://www.dpor.virginia.gov/Boards/Contractors (Retrieved October 14, 2026).

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93. Virginia Board for Contractors / DPOR. (2025, September 1). *Virginia: Board for Contractors Regulations*. https://www.dpor.virginia.gov/sites/default/files/boards/Contractors/A501-27REGS.pdf

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94. https://www.dpor.virginia.gov/sites/default/files/boards/Contractors/A501-27EXINFO.pdf (Retrieved October 14, 2026).

<a id="dataset-source-95"></a>

95. https://lni.wa.gov/licensing-permits/contractors/register-as-a-contractor/ (Retrieved October 14, 2026).

<a id="dataset-source-96"></a>

96. W. Va. Code § 30-42-3. https://code.wvlegislature.gov/30-42-3/

<a id="dataset-source-97"></a>

97. https://labor.wv.gov/licensing/hvac-technician-certification/hvac-certification-faq (Retrieved October 14, 2026).

<a id="dataset-source-98"></a>

98. https://dsps.wi.gov/a-z-professions-list/dwelling-contractor-qualifier-dcq/ (Retrieved October 14, 2026).

<a id="dataset-source-99"></a>

99. https://dsps.wi.gov/a-z-professions-list/dwelling-contractor-qualifier-dcq/new-licensure/ (Retrieved October 14, 2026).

<a id="dataset-source-100"></a>

100. https://dsps.wi.gov/a-z-professions-list/dwelling-contractor-dc/new-licensure/ (Retrieved October 14, 2026).

<a id="dataset-source-101"></a>

101. https://wyomingbusiness.org/business/start/startup-resources/ (Retrieved October 14, 2026).

<a id="dataset-source-102"></a>

102. North Carolina Licensing Board for General Contractors. (n.d.). *License applicants*. Retrieved October 14, 2026, from https://www.nclbgc.org/license-applicants/

<a id="dataset-source-103"></a>

103. North Carolina Licensing Board for General Contractors. (n.d.). *Verify License/Qualifier Search*. Retrieved October 14, 2026, from https://portal.nclbgc.org/Public/Search

<a id="dataset-source-104"></a>

104. Alabama Home Builders Licensure Board. (n.d.). *Alabama: Exemptions*. Retrieved October 14, 2026, from https://hblb.alabama.gov/exemptions/

<a id="dataset-source-105"></a>

105. A.R.S. § 32-1121. https://www.azleg.gov/ars/32/01121.htm

<a id="dataset-source-106"></a>

106. Arkansas Contractors Licensing Board / Residential Contractors Committee. (2022, November). *Arkansas: Rules of the Residential Contractors Committee*. https://www.labor.arkansas.gov/wp-content/uploads/ResidentialRules-Nov-2022.pdf

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107. Contractors State License Board. (n.d.). *California: Before Applying for the Examination*. Retrieved October 14, 2026, from https://www2.cslb.ca.gov/Contractors/Applicants/Contractors_License/Exam_Application/Before_Applying_For_License.aspx

<a id="dataset-source-108"></a>

108. HRS § 444-2. https://data.capitol.hawaii.gov/hrscurrent/Vol10_Ch0436-0474/HRS0444/HRS_0444-0002.htm

<a id="dataset-source-109"></a>

109. La. R.S. § 37:2150.1. https://legis.la.gov/Legis/Law.aspx?d=93567

<a id="dataset-source-110"></a>

110. Mississippi State Board of Contractors. (2022). *Mississippi: Residential Laws and Rules*. https://www.msboc.us/wp-content/uploads/2022/07/RESIDENTIAL-LAWS-AND-RULES-REVISED-2022-Web-Version.pdf

<a id="dataset-source-111"></a>

111. Nevada State Contractors Board. (n.d.). *Nevada: Licensing exemptions*. Retrieved October 14, 2026, from https://www.nvcontractorsboard.com/licensing/exemptions/

<a id="dataset-source-112"></a>

112. North Carolina Licensing Board for General Contractors. (n.d.). *North Carolina: FAQ for consumers*. Retrieved October 14, 2026, from https://nclbgc.org/faq-consumers/

<a id="dataset-source-113"></a>

113. North Dakota Secretary of State. (n.d.). *North Dakota: Contractors*. Retrieved October 14, 2026, from https://www.sos.nd.gov/business/licensing-registration/contractors

<a id="dataset-source-114"></a>

114. Residential Builders Commission, Department of Labor Licensing and Regulation. (n.d.). *South Carolina: Residential builder licensing*. Retrieved October 14, 2026, from https://www.llr.sc.gov/res/resbuilder.aspx

<a id="dataset-source-115"></a>

115. Tennessee Board for Licensing Contractors. (n.d.). *Tennessee: Contractor license*. Retrieved October 14, 2026, from https://www.tn.gov/commerce/regboards/contractors/license/get/contractor.html

<a id="dataset-source-116"></a>

116. Virginia Board for Contractors / DPOR. (2025, September 1). *Virginia: Board for Contractors Regulations*. https://www.dpor.virginia.gov/sites/default/files/boards/Contractors/A501-27REGS.pdf

<a id="dataset-source-117"></a>

117. W. Va. Code § 30-42-3. https://code.wvlegislature.gov/30-42-3/