Which document is signed by the Owner, A/E, and Contractor to modify the agreement's terms and conditions?

The document that is signed by the Owner, Architect/Engineer (A/E), and Contractor to modify the agreement's terms and conditions is known as the Contract Change Order. This formal document is essential in construction management as it outlines changes to the original contract, including revisions to the scope of work, adjustments in contract price, and alterations to the project schedule.

When parties recognize that changes are necessary due to unforeseen circumstances, design modifications, or other valid reasons, a Contract Change Order allows them to formally agree on the adjustments. It serves as a record of what has been agreed upon, ensuring all parties have a mutual understanding of the new terms.

Other documents, while related to project management, serve different purposes. A Change Directive typically authorizes a change without a prior agreement on the price and is often used when immediate action is necessary. A Notice to Proceed signals that the contractor may begin work but does not modify contract terms. A Stop Work Order instructs the contractor to cease all operations but does not inherently alter the contract itself. Each of these plays a distinct role in project execution but does not function in the same capacity as the Contract Change Order when it comes to modifying original agreements.