Title: Writing a trade scope a sub can price | Cercha

Description: Define a trade scope of work with current drawings, materials, exclusions, handoffs, completion checks, and an agreed change process.

Canonical: https://cercha.pages.dev/guides/trade-scope-of-work/

# Writing a trade scope a sub can price

Residential building

You need comparable bids for the same work. Issue one scope and document set, then resolve materials, interfaces, exclusions, and return visits before award.

You need a sub to price a clear package of work on the house. A subcontractor scope of work should identify the work, its location, controlling documents, materials, trade interfaces, and completion requirements. Give every bidder the same scope and documents. Resolve differences before comparing totals.

The NC board’s contract guidance calls for a detailed work description and specifics on materials and equipment. It also recommends written changes. Use that guidance to spell out what the sub’s price includes. [Board contract guidance](https://www.nclbgc.org/remodeling-home-improvement-contracts/).

## State what work the price must cover

Name the trade package and project location. State whether the work concerns a new house, addition, renovation, or repair. List the rooms, elevations, systems, or other areas the bid must cover.

Describe the result you need before listing individual tasks. For a cabinet package, identify the approved runs and associated installation work. For roofing, identify the selected assembly and affected roof areas. Ask the installer to identify missing information rather than choosing an unstated system.

State what remains outside the package. Identify related work supplied by the builder, owner, another trade, or supplier. Use [inclusions and exclusions](/guides/inclusions-and-exclusions/) to make those boundaries explicit and comparable.

Avoid relying on “complete” without a definition. Ask whether the price includes receiving, installation, protection, adjustments, cleaning, documentation, and required return visits. Answer those questions in the scope you intend to agree on.

## List the drawings and revisions to price

Give the request an issue date and a document index. List drawing titles, sheet numbers, revisions, specifications, schedules, and approved selection information. Identify the scope document’s own revision.

Ask bidders to confirm the set used for pricing. If you issue an addendum, send it to every bidder and request acknowledgment. Keep old sheets separate from the current set.

State how bidders should raise conflicts in the documents. Ask the bidder to identify contradictory details or missing dimensions before pricing around them. Have the designer or authorized builder contact resolve the question in writing.

NARI’s collaboration guidance emphasizes documented deliverables, milestones, and processes between remodelers and outside designers. Give estimators and field crews the same design information in the pricing package. [NARI documentation guidance](https://nari.org/nari-blog-main/4-expert-tips-for-remodelers-working-designers/).

Do not invent an order of precedence between drawings and specifications. Ask your construction attorney to write or review the agreement’s conflict provision. Reference that provision in the scope when it controls the bidding process.

## Specify materials without filling design gaps

Identify selected products from confirmed project documents. List the model, finish, size, assembly, or other details needed to identify the selection. List items still awaiting selection and ask bidders to flag them in the price.

Keep allowances separate from completed selections. Ask the bidder to state the basis of any allowance and the work it includes. Decide how a later selection changes price and timing before award.

State who purchases each material and who receives it. Ask who checks delivery damage, stores the product, and supplies missing accessories. List who handles owner-supplied fixtures and builder-supplied components on the same sheet.

Use [material takeoff](/guides/material-takeoff/) to organize quantity questions. Identify the drawing revision behind any supplied quantities. Ask the bidder whether it relies on those quantities or performs its own takeoff under the agreement.

Do not replace engineering or manufacturer requirements with estimating guesses. If the package lacks an assembly detail, return the question to the responsible designer or installer. Record the answer with the pricing documents.

## Assign work where trade scopes meet

Review every place where the package meets another scope. Name the task at the interface and identify who performs it. Ask the receiving trade to confirm the conditions it needs.

Use this suggested responsibility table:

| Interface question | Decision to record |
| --- | --- |
| Who prepares the substrate or support? | Required condition and responsible trade |
| Who supplies the product or equipment? | Purchasing, receiving, and damage-reporting responsibility |
| Who makes openings or penetrations? | Approval process and restoration responsibility |
| Who completes flashing, sealing, or connections? | Exact task, assembly document, and installer |
| Who protects completed work? | Protection method and responsibility during later visits |
| Who tests and requests inspections? | Applicable approval and responsible permit contact |
| Who returns for adjustments or corrections? | Visit scope and coordination process |

For a countertop package, state how the cabinets and supports must be ready before templating. Cambria’s technical guideline requires support without deflection for its countertops. Ask the installer what support the specified product needs and who supplies it. [Cambria guideline](https://www.cambriausa.com/content/dam/cusa/sales-marketing-collateral/sops/countertop-installation-technical-guideline.pdf).

Use the table to assign tasks under the agreement. It does not establish which trade owes the work. Use [trade handoffs](/guides/trade-handoffs/) to check those assignments before releasing the next crew.

PNNL’s [window-flashing guide](https://basc.pnnl.gov/resource-guides/windows-and-doors-are-fully-flashed) calls for checking flashing integration before siding. Name who performs that interface check in the relevant scope.

## Give enough detail to expose a pricing difference

Include details that change labor, purchasing, access, coordination, or completion checks. State working-area restrictions, occupied-home arrangements, and known site conditions. Ask the bidder to identify assumptions about conditions that remain unknown.

OSHA’s [construction housekeeping rule](https://www.osha.gov/laws-regs/regulations/standardnumber/1926/1926.25) requires clearing debris from work areas, passageways, and stairs. Assign cleanup responsibilities without treating the scope sheet as a substitute for the safety rule.

List the activities and return visits you intend to buy. Distinguish rough work, finish work, testing, adjustments, and closeout when they are separate obligations. Have the sub list the visits its price assumes.

State how you will check the work against the approved specification, sample, detail, or manufacturer requirement. Avoid subjective wording that neither party can inspect. Ask the designer to resolve finish or tolerance questions before the sub commits a price.

More words do not make a scope clearer. A drawing reference can carry a defined detail. A short written allocation can settle who performs it. Remove copied boilerplate that contradicts the actual package or claims unrelated work.

## Ask bidders to return the same information

Use the [trade scope of work template](/tools/trade-scope-of-work-template/) to structure the response. Ask every bidder for the same schedule assumptions, inclusions, exclusions, allowances, alternates, and validity terms. Have bidders list unanswered questions.

Compare the work behind the totals. If one bidder supplies materials and another prices installation only, compare the same work before selecting. Do not add an unconfirmed allowance to make the bids appear equal.

Keep a decision log for scope clarifications. Send any clarification that changes the pricing basis to all affected bidders. Request a revised price where the answer changes the offered work.

After selection, put accepted clarifications in the signed agreement. Ask the sub to confirm the final document index and responsibility table. An email conversation should not leave the field crew working from an earlier scope.

## Define changes and follow-up before work starts

Name who can authorize extra work and how requests are documented. Ask counsel to review pricing, delay, backcharge, and dispute provisions. Do not turn a suggested checklist into an unreviewed subcontract.

North Carolina generally requires inspection-department approval for deviations from approved permit documents unless the change is clearly permissible under the State Building Code. Commercial approval and permit approval answer different questions. [G.S. 160D-1112](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_160D/GS_160D-1112.html).

Identify punch and warranty responsibilities before award. Read [callbacks and warranty work](/guides/callbacks-and-warranty-work/) for the investigation questions to include. Keep any promised warranty tied to its actual written terms.

## Where Cercha fits

Cercha’s Search helps you find trade candidates by trade, ZIP code, and radius. Portfolios and endorsements help you review relevant work before discussing the package. Messages lets you begin that conversation; agree the priced scope in your project documents.

Published 2026.10.14. Updated 2026.10.14.

[More guides: Schedule and handoffs](</guides/topics/schedule-and-handoffs/>)

## Related guides

- [Inclusions and exclusions in a trade bid](</guides/inclusions-and-exclusions/>)
- [Trade handoffs: who accepts the work before the next crew](</guides/trade-handoffs/>)
- [Callbacks: who comes back and who pays](</guides/callbacks-and-warranty-work/>)
- [What is a material takeoff?](</guides/material-takeoff/>)

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## Sources

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1. North Carolina Licensing Board for General Contractors. (n.d.). *Building, remodeling, improving your home*. NC Licensing Board for General Contractors. Retrieved October 14, 2026, from https://www.nclbgc.org/remodeling-home-improvement-contracts/

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

2. National Association of the Remodeling Industry. (2024, December 9). 4 Expert Tips for Remodelers Working Designers. *NARI*. https://nari.org/nari-blog-main/4-expert-tips-for-remodelers-working-designers/

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

3. Cambria. (2024, May 3). *Cambria Countertop Installation Technical Guideline*. https://www.cambriausa.com/content/dam/cusa/sales-marketing-collateral/sops/countertop-installation-technical-guideline.pdf

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

4. N.C. Gen. Stat. § 160D-1112. https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_160D/GS_160D-1112.html

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

5. Pacific Northwest National Laboratory. (n.d.). *Windows and Doors are Fully Flashed*. Retrieved October 14, 2026, from https://basc.pnnl.gov/resource-guides/windows-and-doors-are-fully-flashed

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

6. Occupational Safety and Health Administration. (n.d.). *1926.25: Housekeeping*. Retrieved October 14, 2026, from https://www.osha.gov/laws-regs/regulations/standardnumber/1926/1926.25