Construction Change Order Template: Protect Your Margins

Change orders are one of the most common sources of profit erosion in construction. A client asks for a small change, it gets verbally agreed to, and either the invoice surprises them or the cost gets quietly absorbed because no one documented it. A standardized template eliminates both problems by creating one clear process for documenting, pricing, and approving every scope change — see how to track change orders without losing your margins for the full system this template supports.

A fixed template also creates consistency across a business: every estimator, project manager, and crew lead uses the same form, the same pricing method, and the same approval process, which makes changes easier to track and harder for a client to reasonably dispute — and it makes the business look more professional at exactly the moment a fast signature matters most.

Every change order needs a clear description of the change — what's being added, removed, or modified, in enough detail that someone who wasn't part of the original conversation can understand the scope. A change that moves a window should describe the original location, the new location, and any work required to patch the original opening — vague descriptions are where later disagreements start. If the change affects the drawing itself, update the drawing in SiteBuildHub Draft and attach the revised version rather than describing the change in text alone.

Pricing is the second essential element: a cost breakdown covering materials, labor, equipment, and any subcontractor costs, with the same markup structure applied as the original contract so the change contributes to overhead and profit the same way the original scope did. Show the original contract total, the change order amount, and the new total, so the client has full visibility into the cumulative cost impact.

Schedule impact matters too — every change order should state whether the change affects the completion date, and if it does, show both the original and revised date so expectations don't quietly drift. Close with a change order number, date, a reference to the original contract or proposal, and signature lines for both parties.

Pricing fairly means applying the same markup structure used in the original contract — if the original proposal carried 15 percent markup on materials and 10 percent on labor, the change order should use the same rates. Consistency is fair to the client, since it mirrors the original agreement, and fair to the business, since every change contributes proportionally to overhead and profit rather than being treated as a favor.

Don't absorb small changes as goodwill — a contractor who quietly eats three $200 changes on one project has given away $600 of margin that should have been profit, and worse, has trained the client to expect free work on the next request. Use the change order process for every change regardless of size; if a very small change genuinely warrants a discount, document it on a change order at a reduced or zero-dollar amount so the scope change is still recorded, not silently dropped. For changes involving additional subcontractor work, include the sub's quote plus the standard markup — passing through subcontractor costs at face value skips the overhead of managing the additional scope and is one of the fastest ways to quietly lose margin on an otherwise healthy project. See how to track change orders without losing your margins for the full four-step system this template supports, and the live change order tool for generating one directly.

Get the change order signed before the work starts — this is the single most important rule in change order management. Once the work is complete, the client has less incentive to sign, and price disagreements get more contentious the further removed they are from the original request. Present the change order at the moment the change is requested, explain the pricing directly, and get approval before the crew begins the additional work.

Present in person when possible — an in-person conversation lets you explain scope and pricing, answer questions, and address concerns immediately, and in-person approvals generally happen faster than emailed ones. For remote approvals, send a clean PDF and ask for a signed copy or digital signature, with a specific deadline stated to avoid delaying the project schedule: "We need approval by Thursday to hold the current schedule" creates appropriate urgency without feeling pushy.

During a kitchen remodel, the client requests moving a light fixture location after the original proposal already priced the standard layout. The contractor documents the request the same day it's made, prices the electrician's trip charge and the drywall patch and paint touch-up at current rates, and applies the same markup used in the original proposal. The change order shows the original contract total, the change amount, and the new total on one page, labeled "Change Order No. 2 to Proposal No. 2026-041."

The client reviews it, asks one question about the drywall line, and signs before the electrician's next scheduled visit — so the change fits into the existing schedule instead of requiring a separate trip. Two months after project completion, when a question comes up about the final invoice total, the signed change order settles it in under a minute, because the price and scope were documented and approved at the moment the change actually happened.