Scope of Works

A scope of works is a written document that defines the specific tasks, deliverables, and boundaries of a project or contract. It establishes what work is included in the agreed price and, critically, what is not. For project-based businesses - contractors, AV integrators, furniture dealers, and installers - a clearly written scope of works is the primary tool for preventing scope creep, managing customer expectations, and protecting the business from doing unpaid work.

What a Scope of Works Should Include

A complete scope of works goes beyond a list of deliverables. It defines the location and sequence of work, the materials or products to be supplied, any exclusions the customer might reasonably assume are included, and any provisional allowances for items not yet fully defined. For a construction job, this might mean specifying which walls are included in a plastering contract and confirming that painting and decoration are excluded. For an AV installation, it would cover which rooms are included, the cable routes to be used, and whether structured cabling is in or out of scope.

The exclusions section is often where disputes originate. Customers frequently assume that adjacent or related tasks are covered by the contract price unless told otherwise in writing. A scope of works that includes an explicit exclusions list - "this contract does not include patching or making good after cable installation" - gives the business a documented basis for raising a variation order when those tasks are requested later.

Scope of Works vs. Other Contract Documents

A scope of works is not the same as a specification or a bill of quantities, though all three often sit together in a contract document set. A specification describes the quality standard or product type to be used - for example, "paint finish: two coats BS 2660 satin" - while a bill of quantities lists individual items with counts and unit rates. The scope of works is the overarching description of what the contractor is responsible for completing.

In smaller contracts and trade packages, a well-written scope of works within the quote document itself may cover all three functions. For a plastering sub-contractor, the scope might read: "Supply and apply two-coat plaster system to walls and ceilings of floors 2-4 as marked on plan reference X, finish ready for decoration. Excludes beading, patching around electrical conduit, and ceiling access hatches." That paragraph defines the work, the standard, and the exclusions in one place.

For larger projects, a formal scope of works issued with the contract - and signed by both parties before work begins - provides a clear reference point when variation orders arise or payment is disputed. Zigaflow allows you to include scope of works detail in quote documents, with version control that locks the accepted scope at the time of customer approval.