What must a contractor include in a proposed Change Order?

A proposed Change Order must include a Request for Change (RFC) that explains the basis for the Change Order. This document is crucial as it outlines the reasons for the requested changes, which may involve alterations in work scope, costs, or timelines. Including an RFC ensures that all parties involved are aware of the rationale behind the changes and can assess their implications effectively. Understanding the context, necessity, and potential impact of the change is vital for proper project management and maintaining clear communication among stakeholders.

The other options do not serve the primary function of a Change Order. A checklist of all project materials, while useful for project management, does not address the specific changes being proposed. A financial audit of past projects is not relevant to current changes and would not be required for a Change Order. A summary of the project history could provide context but lacks the specific details and justifications necessary for a Change Order, making it insufficient on its own.