Contracts

Scope of Work

Also known as: SOW

The written description of all tasks, materials, and deliverables the contractor agrees to perform on the project.

The scope of work (SOW) is the written description of everything a contractor agrees to do on a project: tasks performed, materials supplied, equipment provided, deliverables produced, exclusions, and standards applied. Scope of work documents range from a few paragraphs (small remodel) to dozens of pages (large commercial TI) and incorporate drawing sets, specifications, and addenda by reference.

Scope ambiguity is the leading source of disputes on construction projects. Vague SOW language ("all work shown on drawings") creates room for owner-contractor disagreement when drawings conflict with each other or with field conditions. Specific SOW language with explicit inclusions, exclusions, allowances, and clarifications dramatically reduces dispute risk. Change orders modify scope; a clean original SOW makes change-order pricing tractable.

Frequently asked questions

What is a scope of work in construction?+

The scope of work is the written description of all tasks, materials, and deliverables the contractor agrees to perform. It can range from a few paragraphs to dozens of pages and incorporates drawings and specs by reference.

Why is scope ambiguity a problem?+

Vague SOW language creates room for owner-contractor disagreement when drawings conflict, field conditions surprise, or assumptions diverge. Disputes over what was or was not in scope are the leading source of project conflict.

How do I write a clear scope of work?+

Be specific. List explicit inclusions and exclusions. Reference drawings and specs by sheet number. Note allowances for undefined items. State which work is owner-supplied vs contractor-supplied. Reference applicable codes and standards. The more specific, the lower the dispute risk.

Related terms

Contract

The binding written agreement between owner and contractor defining scope, price, schedule, and terms of the project.

Change Order

A written modification to a construction contract documenting added, deleted, or altered scope plus price and schedule impact.

Estimate

A contractor's informational projection of project cost. Non-binding and revisable; differs from a firm bid.

Bid

A contractor's formal price proposal to perform a defined scope of work, usually in response to a bid invitation.