How to document extra work so you actually get paid
“While you're here, could you also…” is one of the most expensive sentences in the trades — not because the work is hard, but because it almost never gets written down before it starts. Here's the field-tested way to capture it in under a minute, without slowing the job down.
1. Say the price out loud before you say yes
"Sure, that's about $1,850 and adds two days — I'll send you a quick approval link." Naming the number in the moment does two things: it sets the expectation, and it gives you the exact figure to write down five minutes later.
2. Write it down the same day — not at invoice time
Memory is unreliable and clients' memories are worse. A note the same day ("Alex asked for drainage channel along north edge, quoted $1,850") is worth far more than trying to reconstruct it three weeks later.
3. Get the yes in writing, even informally
A text that says "yes go ahead" is better than nothing. A typed name on a dated approval page is much stronger — it's harder to walk back and it's timestamped automatically.
4. Photograph before you start the extra work, not just after
A before photo proves what you found. An after photo proves what you did. Without the before photo, a client can argue the work "was already like that."
5. Keep the extra work as its own line item, always
Don't fold it into the final number. "Original estimate $12,400 + drainage channel $1,850 = $14,250" survives a dispute. "$14,250" alone does not.
What this looks like on a real job
A landscaper is mid-patio-install when the homeowner asks for a drainage channel along the edge. He quotes $1,850 and two extra days on the spot, texts a one-line summary to himself that afternoon, and the client taps “approve” on a link before the crew starts digging. Photos go up before and after. The final invoice reads $12,400 + $1,850 = $14,250 — and when the homeowner later double-takes at the total, the approval with a timestamp and a name ends the conversation in one message.
The version that takes 30 seconds instead of five minutes
Everything above works with a phone, a notes app, and some discipline. Swornbook just removes the friction: one tap creates the change order, one link gets the approval, and photos attach directly to the job — so the record you need already exists by the time you write the invoice.
Free 14-day trial, no card: protect your next change order →
This guide is provided free for your business use. It is not legal advice.