What document is used to outline the scope of work in a construction project?

The document that is primarily used to outline the scope of work in a construction project is the contract. A contract serves as the foundational agreement between the parties involved in the construction project, detailing the specific tasks, responsibilities, and expectations of all parties. It includes vital information such as the project schedule, cost estimates, specifications of the work to be performed, and binding terms that govern the overall workflow.

The clarity and breadth of the contract are essential, as they provide a framework that helps mitigate disputes and ensures that all parties are aligned on the project's objectives. Contracts often also include provisions for how changes to the scope of work will be handled, but their main purpose is to establish what work will be done and under what conditions.

While an addendum can modify or add to an existing contract, it does not serve as the primary document for outlining the original scope of work. A change order, on the other hand, is used to formally document alterations to the original contract, reflecting changes in scope, schedule, or costs after the contract has been established. An invoice serves a completely different purpose, relating to the billing process for work completed or materials supplied, rather than outlining the work itself.