Licensing research

Contractor licensing by state

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 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 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 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 contains 51 jurisdiction rows.
Among 14 jurisdictions with verified project-cost licensing dollar boundaries recorded in this dataset, 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 remain unresolved: Colorado, Missouri, New Hampshire, New Jersey, Ohio, and South Dakota.
General-table source access 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 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 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.

Updated 2026.10.14. 51 rows.

Download CSV

Contractor licensing by state
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] [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] [4] [5] [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] [8] [9] [10] [11] [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] [14] [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] [17] [18] [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]
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] [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]
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]
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]
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]
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] [28] [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] [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]
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]
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] [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]
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]
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] [39] [40] [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]
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] [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] [46] [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] [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]
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] [52] [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]
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]
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]
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] [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]
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]
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] [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] [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] [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]
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]
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]
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] [71] [72] [73] [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] [76] [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] [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] [81] [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]
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] [85] [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]
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] [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] [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] [93] [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]
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] [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] [99] [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]

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

Updated 2026.10.14. 153 rows.

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Trade licensing by state
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
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]

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.

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