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Acronymsaka: change order requestaka: change order proposalaka: COP

COR (Change Order Request)

In Plain English

A formal request from a contractor asking for more money or time because something changed on the project.

Definition

A Change Order Request is a formal document initiated by a contractor to request a change in the contract's scope, price, or schedule in response to an owner-directed change, unforeseen condition, or design revision. The COR documents the proposed cost impact and schedule adjustment and is submitted to the owner or owner's representative for review and approval. Once approved and signed by both parties, the COR is incorporated into a formal change order that amends the contract.

Example

After discovering unmarked underground utilities during excavation, the contractor submits a COR for $28,000 and 5 additional days to reroute the conflicting pipes.

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