change order
Introduction
A change order is a formal written document issued to modify an existing construction contract or agreement, specifying alterations to the scope of work, quantities, specifications, schedule, or cost, while ensuring the changes remain within the general intent of the original contract.[1] These modifications are typically required when unforeseen site conditions, design errors, or owner-directed adjustments arise after the contract has been executed, allowing projects to adapt without voiding the entire agreement.[2]
In construction and procurement contexts, change orders serve to document mutual agreements between owners and contractors on additive or deductive changes, preventing disputes by providing a clear record of approved variations.[1] They are essential for maintaining project integrity, as they enable equitable adjustments to contract time and price, often based on unit prices from the original bid or force account methods for unpriced work.[2] Common reasons include differing site conditions, value engineering proposals, or regulatory compliance needs, with best practices emphasizing timely processing, detailed justification, and stakeholder involvement to minimize delays and cost overruns.[1]
Change orders can be bilateral, requiring agreement from both parties on terms, or unilateral, where the contracting officer directs changes without contractor consent, particularly in government contracts under clauses like FAR 52.243-4.[3] The process generally involves submitting a detailed proposal with cost breakdowns, followed by negotiation, approval, and execution, with claims for adjustments due within specified timelines such as 30 days.[3] Effective management of change orders is critical in industries like public infrastructure and federal acquisition, where they must align with legal standards to avoid litigation or financial penalties.[2]
Definition
Core Definition
A change order is a written amendment to a construction contract that authorizes modifications to the original scope of work, contract sum, contract time, or other terms after the contract has been executed. In standard industry documents such as the American Institute of Architects (AIA) Document A201-2017, General Conditions of the Contract for Construction, a change order is defined as a written instrument prepared by the architect and signed by the owner, contractor, and architect, specifying the change in the work, any adjustment to the contract sum, and any extension or reduction in the contract time. This mechanism ensures that all parties formally agree to the alterations, maintaining contractual integrity and providing a legal basis for implementation.[4]