Change orders that actually get paid

Ask a contractor where a profitable job went wrong and the answer is usually not the estimate. It is the six small things added along the way, agreed in doorways, never priced, and never invoiced — because raising them afterwards felt like nickel-and-diming a customer who was otherwise happy.

The fix is a process the customer agreed to before any of it happened.

Put the clause on the original estimate

The change-order conversation is easy when it was pre-agreed and hard when it arrives as a surprise. Your estimate should already say, in plain language, that work outside the written scope is priced and approved in writing before it is done.

That single paragraph converts an awkward negotiation into administration. You are not asking for more money; you are following the process they already accepted.

Write it down before you do the work

A change order needs to be its own numbered document, and it needs to exist before the work happens. It should carry:

• What is changing, described as specifically as the original scope
• What it costs, itemised the same way
• What it does to the schedule — this is the part people forget, and it is often the part the customer cares about most
• A place to accept it

The schedule impact matters. “Adding the second bathroom fan is $340” is a small conversation. “Adding it is $340 and pushes inspection to next week” is the whole conversation, and the customer would much rather have it now than discover it later.

Verbal approvals are how you lose money

A homeowner standing in their kitchen saying “yes, just do it” is entirely sincere. They are also not writing it down, not remembering the number, and not the person who will query the final invoice.

This is not about distrust. Memory is genuinely unreliable about numbers agreed in passing while someone is trying to get to work. A text message with the price and a “yes” back is a low-friction written approval and it is worlds better than nothing.

Price changes at change-order rates, not estimate rates

Work added mid-job costs more to do than the same work bid up front. It disrupts sequence, it may need a return trip, it can mean re-mobilising a crew or re-opening something already closed. Pricing changes at your original unit rates trains customers to save requests for after you have started, which is the worst possible time for both of you.

It is fair to say so out loud: the estimate price assumed everything happening in one planned sequence.

Distinguish a change from a discovery

Two different things get called change orders, and separating them helps:

• A change is the customer wanting something different: an upgraded fixture, an extra circuit, a bigger unit.
• A discovery is the job being different from what could be seen: rot behind the trim, a panel with no capacity, a slab that fails a moisture test.

Changes are the customer’s decision, so they get a straightforward price. Discoveries land better when the original estimate already named them as possible. “Concealed conditions are priced when found” on the estimate makes the discovery expected rather than opportunistic — which is exactly the difference between a customer who approves it and one who suspects they are being worked.

Keep the running total visible

On any job with more than a couple of changes, show the customer where they stand: original contract, changes approved to date, revised total. People accept a growing number far more readily when they can watch it grow than when it arrives at the end as a single unexplained figure.

This is also what makes the final invoice uncontroversial. If every increment was approved and the running total was never a surprise, the last document is arithmetic rather than an argument.

The one rule

If it is not written down and approved before you do it, assume you are doing it for free — and decide, deliberately, whether that is a gift you want to give. Sometimes it is. A ten-minute favor builds a relationship worth more than the invoice. The point is to choose it, rather than discover it at the end of the month.