Construction glossary · Process and Contract Terms

What is a scope of work in construction?

A scope of work in construction is the part of the contract documents that states exactly what work a contractor or subcontractor will perform, what it includes and excludes, and which drawings and specifications define it. On a commercial job each trade package gets its own scope of work, and the price a bidder submits covers that scope and nothing more.

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Updated November 2026 · Reviewed by the Ruh construction team

Part of the contract documentsWritten one per trade packageStates includes, excludes, qualifies

Scope of work, scope sheet, bid package

The definition

Scope of Work, Explained.

A scope of work tells every party what the contract price buys. It names the work, points to the drawings and specification sections that define it, and draws the line where one contractor's work stops and the next one's starts.

The owner and design team write it for the prime contract. The GC estimator then writes one for each trade package, and each subcontractor states its own scope in its proposal. It lives in the agreement or as a scope exhibit to the subcontract, read together with the drawings and the project manual.

Federal design-build work uses the term the same way. In two-phase design-build procurement, FAR 36.302 has the agency develop a scope of work "that defines the project and states the Government's requirements". The letters SOW can mislead, though. Construction uses them for scope of work, while federal and IT contracting often mean a statement of work, a wider document. The FAQ below covers the difference.

To write one line by line, use the free scope of work template. Federal definition: FAR 36.302.

How it is measured

A scope of work is not measured in units. It is measured in coverage: every specification section and drawing discipline in the set should map to exactly one responsible party, whether that is a trade, the GC or the owner. Estimators check coverage by crossing the spec table of contents with the drawing index, then mark each item included, excluded or by others. The number to drive to zero is unassigned items.

Scope Sheet vs Scope of Work vs Bid Package

The scope of work describes what a package covers, the scope sheet breaks that scope into one line per item, and the bid package is everything a bidder receives in order to price it.

Addenda change the bid package, so the scope has to change with them.

	Scope of work	Scope sheet	Bid package
What it is	The written description of the work a contract or trade package covers	The scope broken into one line per item, each marked included, excluded or by others with a reference	The full set of documents sent to bidders
Who writes it	Owner and design team, then the GC per trade	GC estimator per trade, or the subcontractor for its own proposal	Owner, design team or GC
What it contains	Work described in prose, with inclusions, exclusions and references	Line items, status, drawing or spec reference, notes, clarifications	Drawings, project manual, addenda, bid form, instructions to bidders, the scope of work
Where it ends up	The agreement or the subcontract scope exhibit	Attached to the invitation, the proposal or the scope exhibit	The bid file, then the contract documents

The bid package reaches bidders with an invitation to bid, a request for quotation (RFQ) or a request for proposal (RFP).

Inclusions, Exclusions and Qualifications

Inclusions list what the price covers, exclusions list what it does not, and qualifications state the assumptions the price depends on. All three belong in writing, on the line they affect.

Miscommunication is costly on any job: poor communication accounts for 26 percent of rework on US jobs and poor project information for another 22 percent, according to the Construction Disconnected report by PlanGrid and FMI (2018).

Inclusions
What the price covers.
- Level 5 finish at the lobby feature wall per A-601.
Exclusions
What the price does not cover.
- Painting of gypsum board, by the painting contractor.
Qualifications
The assumptions the price depends on.
- Price assumes work during normal hours on a clear floor.

Comparing bids with different inclusions and exclusions is bid leveling. The rework figures are from Construction Dive's report on the PlanGrid and FMI study.

"By others" is an exclusion that names who does the work. Without a name, two trades can both exclude the same item.

When the documents carry an allowance, a fixed sum for an item not yet chosen, the scope says so on the line it covers.

What Is a Scope Gap?

A scope gap is work the project needs that no contractor's scope covers, so nobody prices it. It usually sits at the boundary between two trade packages and surfaces after award, when someone has to pay for it.

Gaps gather at the edges of packages: in-wall blocking, firestopping, access panels, joint sealants, and patch and repair after other trades. The free scope of work template lists the full set of boundary items.

They get caught the same way every time: one line per item, a named party on every by-others line, and a reference on every line.

For how scope gaps show up before signature, read about scope gaps in subcontractor bids.

Worked example

A Worked Scope of Work Example.

Here is how two scopes that each look complete can leave about $9,940 of work unpriced, using illustrative numbers on an office fit-out.

The GC sends a drywall scope and a casework scope for a three-floor office fit-out. The drywall subcontractor's proposal comes in at an illustrative $412,000 and excludes in-wall blocking and access panels. The casework subcontractor excludes blocking too. The mechanical and plumbing subcontractors furnish their access panels but exclude installing them.

Item	Quantity (from the drawings)	Illustrative unit cost	Cost	Covered by
In-wall blocking for casework, grab bars and wall-mounted items	Quantity (from the drawings)140 locations	Illustrative unit cost$35 each	Cost$4,900	Covered byNobody
Install access panels in gypsum board	Quantity (from the drawings)24 panels	Illustrative unit cost$210 each	Cost$5,040	Covered byNobody
Total unassigned	Quantity (from the drawings)	Illustrative unit cost	Cost$9,940	Covered by

Step by step: 140 x $35 = $4,900. 24 x $210 = $5,040. $4,900 + $5,040 = $9,940. Against the $412,000 drywall package that is $9,940 / $412,000 = 2.4 percent.

The fix is two lines on the scope: blocking by the GC's carpenter, and access panel installation by the mechanical and plumbing subcontractors that furnish the panels, each citing the sheet or section it comes from. Caught before award it is a scope decision. Caught during buyout or later it becomes a cost someone has to absorb.

Illustrative example. Unit costs are placeholders, so use your own.

How Ruh handles it

How Ruh Handles Scope of Work.

A person on your team approves every scope line before Ruh measures it, and can edit every quantity and price. Ruh AI's Estimating Agent prices from your own rate book and history. Ruh AI's Takeoff Agent measures the approved scope, and withholds a figure when a sheet has no scale instead of guessing. Each stage is approved before the next one opens.

On this page: Scope Sheet vs Scope of Work vs Bid Package · Inclusions, Exclusions and Qualifications · What Is a Scope Gap? · A Worked Scope of Work Example.

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Scope of Work: Frequently Asked Questions

What is the difference between a scope of work and a statement of work?+

In construction, SOW usually means scope of work: the description of the work a contract or trade package covers. In federal and IT contracting, SOW often means statement of work, a wider document that can also set deliverables, schedule and terms. Check which one a contract means before you price it.

Who writes the scope of work on a construction project?+

The owner and design team define it for the prime contract. The general contractor's estimator then writes a scope for each trade package, and each subcontractor states what its own price covers in its proposal.

What should a scope of work include?+

The work to be performed, what is included and excluded, the drawings and specification sections that define it, any allowances, and the assumptions the price depends on. On a trade package, each item should name who does it.

What is the difference between an exclusion and a qualification?+

An exclusion removes an item from the price. A qualification keeps the item in but states a condition the price depends on, such as working hours or access. Both should sit on the line they change.

What does "by others" mean in a scope of work?+

It means another party does that work, so this contractor has not priced it. It only protects the job when the scope names who the others are, because an unnamed "by others" can leave the item with nobody.

Is the scope of work part of the contract?+

Yes, once it is written into the agreement or attached as an exhibit to the subcontract. A scope that sits only in an email or a proposal may not bind either party, so check how your contract lists its documents.

Still measuring by hand? Your next takeoff can run while you review this one.

See it on your plans

Keep going: A Worked Scope of Work Example., read the full guide or explore Construction Estimating Software.

The Construction Estimating Cheat Sheet

Every unit, waste factor, and conversion on one page. Free PDF.

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Figures on this page are illustrative. Construction estimates depend on project-specific conditions, source documents, market pricing, and professional judgment. Ruh's AI assists the estimator and does not replace professional review: your team reviews, validates, and approves every estimate, bid, and pricing decision.

Now run it on your job

Knowing what scope of work means is the easy half.

The number you actually need is the one from your own drawings. These two are free, take no signup, and give you something you can put straight into a bid.

Scope of Work TemplateA scope sheet by trade, free to download Drywall CalculatorBoard, studs and track for your walls

Try Ruh on a Bid You Are Pricing Now.

Put us on real work rather than a canned demo. Ruh reads your drawing set, measures the scope, and prices the quantities against your own rates, with every line traceable back to the sheet it came from.

1Tell us about a bid you are working on and the trade you are pricing
2Ruh measures that scope from your drawings and prices it on your own rates, not generic cost data
3Every quantity traces back to the sheet it was measured from, so your estimator can check the work