Change Orders 101: How to Price and Document Scope Changes Without Losing Money

PRICING · 2026-07-09

Change orders are where a lot of contractors quietly lose money. Here is how to price, document, and submit them so scope changes do not erode your margin.

Change orders are where a lot of contractors quietly lose money — not because the extra work wasn't worth billing for, but because it wasn't priced or documented with the same rigor as the original bid.

Price it like a mini-estimate

Pricing a change order should follow the same discipline as the original estimate: real material takeoff for the added/changed scope, labor hours based on your actual productivity rates, and your standard markup applied consistently — resist the temptation to price change orders as a flat "extra" without breaking down the actual cost buildup, since that's exactly where disputes happen later.

Documentation is the real protection

A change order should clearly state: what specifically changed from the original scope, why (client request, unforeseen condition, design revision), the cost breakdown, and any schedule impact — verbally agreed changes without paper trail are the single most common source of payment disputes on a job.

Timing matters

Pricing and submitting a change order before the work begins protects you far better than doing the work first and pricing it after the fact — even when schedule pressure makes that tempting, an after-the-fact change order has much weaker footing if a client pushes back on the cost.

The common pitfall

Treating a change order as a minor add-on to the original estimate rather than its own mini-estimate. Even a small scope change deserves its own material/labor breakdown — bundling it loosely into "extra costs" is how change order income quietly disappears into unbilled labor hours.