Construction Change Orders: How Architects Can Track Design Changes, Approvals and Extra Costs

Construction projects rarely follow the original drawings from start to finish. A client may request a new layout, a site condition may require a design adjustment, or a specified material may no longer be available. Each change can affect cost, deadlines, coordination and responsibility. Without a clear process, small decisions can become expensive disputes.

A construction change order is a documented agreement that records an approved change to the project scope and, where applicable, the contract price or completion time. For architects, tracking change orders means more than updating a drawing: it means making sure the right people understand what changed, why it changed, what it costs and when the work can proceed.

Why Change Orders Need a Clear Process

Informal instructions sent through calls or chat messages are easy to miss and difficult to verify later. A contractor may work from an outdated drawing, a client may assume a request is included in the original fee, or the project team may disagree about who approved an extra cost. These gaps can lead to rework, delays and strained client relationships.

A reliable process creates one traceable record for each change. It connects the request to the relevant drawing, review comments, cost estimate, schedule impact and written decision. The exact contractual steps depend on the project agreement and local requirements, so teams should confirm who has authority to approve changes before work begins.

1. Record Every Change Request

Start by logging each proposed change, whether it comes from the client, architect, consultant, contractor or an unexpected site condition. Give it a unique reference number and record the date, requester, reason and affected area or drawing.

Describe the request in plain language. “Revise kitchen layout to accommodate a larger island” is more useful than “kitchen change.” Attach photographs, sketches, marked-up drawings or relevant correspondence so the team can understand the issue without searching through separate conversations.

2. Assess Design, Cost and Schedule Impacts

Before confirming a change, review how it affects connected work. A revised wall location may influence electrical points, plumbing, joinery, finishes, quantities and approvals. Ask the contractor or relevant consultant to provide a written estimate with labour, materials, taxes where applicable and any other agreed cost components.

Record the effect on the programme as well. Will the change affect procurement, work already completed, inspections or the critical path? If additional design time is needed, clarify whether it falls within the agreed scope or requires a separate fee. Do not present an estimate as final until the responsible parties have reviewed it.

3. Get Written Approval Before Proceeding

Share a clear change proposal with the client and other authorised decision-makers. It should state the reason for the change, the revised scope, supporting documents, price adjustment, time adjustment and any assumptions or exclusions. Identify who must approve it and keep the response with the change record.

Avoid relying on a verbal “go ahead” for work that affects cost, scope or completion dates. If urgent site conditions require immediate action, follow the contract’s procedure for instructions and written confirmation. An architect’s authority varies by agreement; never assume that design approval alone authorises a commercial change.

4. Update Drawings and Communicate the Latest Version

Once the change is authorised, revise the relevant drawings, specifications and schedules. Use clear revision numbers, dates and notes that explain what changed. Mark superseded files as obsolete while retaining them for the project record; do not let old and new versions appear equally current.

Notify the people who need to act: contractors, consultants, suppliers and site teams. Make sure they can identify the approved version before carrying out work. Connect each revised drawing to its change reference so that the reason for the revision remains easy to trace.

5. Track Status, Ownership and Extra Costs

A simple change log can include: reference number, description, requester, date raised, responsible person, estimated cost, approved cost, schedule impact, approval status, drawing revision and close-out date. Use consistent statuses such as Requested, Under Review, Awaiting Approval, Approved, Rejected and Completed.

Review open changes during project meetings. Assign one person to follow up on missing estimates or approvals, and compare approved changes against invoices and the current budget. This helps prevent unapproved work from being mistaken for agreed scope and gives the client a clearer view of financial commitments.

Use One Connected Project Record

Spreadsheets can help smaller teams, but records become harder to maintain when drawings, approvals, tasks and conversations live in different places. A connected project workspace helps teams keep the change request, latest drawing, assigned actions, discussion and decision history together.

Wallxy brings project drawings, tasks, discussions, documents and updates into one workspace. Teams can use it to organise drawing revisions, assign follow-up tasks and keep project communication in context. Explore the Wallxy workspace or read our guide to drawing approval workflows to see how structured records support project coordination.

A Practical Change-Order Checklist

Before closing a change, confirm that you have:

• A written description and reason for the change.

• The affected drawings and specifications identified.

• Cost and schedule impacts reviewed.

• Approval from the authorised parties recorded.

• Revised documents issued to the right team members.

• Superseded versions retained but clearly marked.

• Related tasks, invoices and final status updated.

For additional guidance, see the American Institute of Architects’ overview of construction change orders. Adapt any sample process to your contract, jurisdiction and project requirements.

Conclusion

Change orders are easier to manage when every request is documented, every impact is assessed and no work proceeds on an unclear instruction. A consistent workflow protects project budgets, supports better coordination and gives clients and contractors a shared record of decisions. With clear ownership and connected project information, architects can manage change confidently while keeping design intent and delivery priorities in view.