Construction change management: After an architect finalizes house plans with the client, any subsequent client-requested design changes must be documented by which formal instrument?

Introduction / Context:
A project often evolves after initial approval. When a client requests changes after drawings are finalized or construction has started, the alteration must be formally tracked to control scope, cost, and schedule.

Given Data / Assumptions:

• The architect has finalized house plans with the client.
• The client requests changes after this point.
• Industry-standard procedures govern contractual modifications.

Concept / Approach:

The standard instrument is a change order. It records the description of the change, its effect on time and price, approvals, and instructions for implementation. This ensures all parties agree to modifications and that drawings, specifications, and work reflect the new scope.

Step-by-Step Solution:

Verification / Alternative check:

Standard owner–contractor agreements (for example, AIA documents) specify change orders for authorized changes to the work, ensuring traceability.

Why Other Options Are Wrong:

Modification slip: Not an industry-standard contractual term.

Whole new set of drawings: Sometimes required, but the controlling instrument remains the change order; drawings are revised as part of the process.

None of the above: Incorrect because change orders are standard practice.

Common Pitfalls:

Proceeding with verbal approvals can cause disputes. Always align design, budget, and schedule via signed change orders, and update the drawing revision clouds and logs.

Final Answer:

change order