The short answer: A change order is a short written agreement, signed before the extra work starts. The simplest habit is to write it the same day, from the site, and get the customer's yes in writing first. An AI agent can draft it from a quick text, so the paperwork takes a minute. You read it, you send it, and the customer signs.
The problem: a yes on site that never reached paper
On site
“Could we move the niche? And tile that wall too.”
“Sure, no problem.”
Three weeks later
“I don't remember agreeing to that.”
Final invoice: now you have to prove it.
One remodeler lost about $40,000 on jobs where clients requested changes and then refused to pay for them at the end.
Journal of Light Construction, “Be ready for change orders”
It rarely comes from bad intentions. Two busy people had a conversation on site that never reached paper. On a BiggerPockets contractor forum thread, general contractors name constant client changes as the biggest problem.
Writing a good change order is a chore, and the moment to write it is in a half-finished room with a crew waiting.
A plain change order checklist
Seven short lines. Sample wording to adapt, not legal advice; check the details with your own advisor.
- 1. Job and original agreementCustomer, address and the estimate it changes.
- 2. What exactly changedOne or two plain sentences.
- 3. What it costsLabor, materials and markup, in a clear list.
- 4. Effect on the scheduleExtra days, or "no change".
- 5. The new totalOriginal amount, this change, new total.
- 6. Who agreed, and whenA signature or clear written yes, dated.
- 7. Work starts once signedThe order is signed before anyone picks up a tool.
The hard part is not knowing what to write. It is finding ten minutes to write it.
1The request, on site
- Client wants the niche moved 18 inches, plus tile on the second wall. About two hours extra and $180 of tile.
- Got it. Drafting the change order now.
Maria is finishing a bathroom. One line, sent from the room.
2The draft
Change order · Bathroom remodel · DRAFT
- What changed: move wall niche 18 in., tile second wall
- Materials: tile$180
- Labor2 hours
- Markup on the tile: needs your check?
- Schedule+2 hours
- New total: original agreement plus this change
- Read the original estimate
- Used Maria's price book
- Flagged what it could not work out
The agent flags the markup instead of guessing it.
3It asks. Maria taps Approve.
Draft ready: one field to check
Approve the change order?
Maria fixes one number and approves. Nothing goes to the customer until she does.
4The customer signs
- Here is the change order for the bathroom: niche moved 18 inches, second wall tiled. Sign here: [link]
- Reminder: your change order is waiting for your signature.
- Signed.
If there is no answer by the end of the day, one polite reminder goes out and Maria is told. The agent does not start, stop or schedule any work.
5It is on the record
Change order · Bathroom remodel
- Signed before the work starts
- Customer's yes, with the date
- Attached to the job
- Invoice total updated
- Crew told
At the end of the job, the final invoice matches what everyone agreed.
The flow in four steps
What this agent will never do
- Asks firstIt never sends a change order without your approval.
- No invented pricesIt works from your price book and asks when something is missing.
- Never starts workYou and the customer decide when work can start.
- No legal adviceA contract clause goes back to you.
The same pattern in home improvement, rentals, translation and editing
-
Home improvement This page
Extra work agreed on sitethenchange order drafted for you to approve
-
Translation agencies example page
Rush request halfway through a jobthenchange agreed in writing first
-
Editing & small presses example page
"One more look" that was not in the contractthenpriced change request for you to approve
-
Short-term rentals example page
Same-day schedule changethennew plan confirmed with the cleaner
Illustrations, not client results.
Related example: how to follow up on unsigned quotes with an AI agent. To see how a custom AI agent fits the tools you already use, see our services, or AI agents for contractors and home services.
Where do your extras get lost?
Book a free discovery callFree 30-minute discovery call · Plain-English recommendations · No obligation
Full brief and setup details
Setup at a glance · illustration
- A textTrigger
- Estimate, price bookInputs
- Draft change orderOutput
- You, always at launchApproval
- Your estimating and accounting toolsConnects to
- One workflow, weekly demoStarts
The setup in full
| Setting | Value |
|---|---|
| Trigger | A text from the contractor describing the change |
| Inputs | The original estimate or contract, the contractor's price book and past similar jobs |
| Output | A draft change order for the contractor to approve, then a sign-here link for the customer |
| Approval | Human approval before anything is sent. Routine reminders can be set to send on their own later, if the contractor chooses |
| Connects to | The contractor's existing estimating or field-service tool and accounting software, set up during the project |
| Where this starts | One workflow, a weekly demo and a fixed-price quote before building |
What happens on every change request
- Reads the text describing the change.
- Pulls up the original estimate and the price book.
- Drafts the change order with the checklist: what changed, the added cost, the schedule effect and the new total.
- Flags anything it cannot work out from the price book, such as markup.
- Sends Maria the draft for approval.
- After approval, sends the customer a sign-here link, and a reminder at the end of the day if there is no answer.
- When signed, attaches it to the job, updates the invoice total and tells the crew.
It does not start, stop or schedule any work.
The seven-line checklist in full
Sample wording to adapt, not legal advice. Check the details with your own advisor.
- The job and the original agreement: customer name, address, and the contract or estimate it changes.
- What exactly is changing: one or two plain sentences, such as “Move the wall niche 18 inches left and tile the second wall.”
- What it costs: labor, materials and any markup, as a single added amount or a clear list.
- What it does to the schedule: extra days, or “no change”.
- The new total: original amount, this change, new total.
- Who agreed, and when: a signature or a clear written yes, with the date.
- When the work starts: once the order is signed.
All the guardrails
Asks first. It never sends a change order without your approval. See how we handle your data.
No invented prices. It works from your price book and past jobs, and asks when something is missing.
Never decides work can start. You and the customer decide that.
No legal advice. If a change order touches a contract clause, it hands it back to you.
Text messages. Automated texts to customers can be subject to consent rules. We raise this in every project. Confirm the details with your own legal advisor.
The business examples in full
- Home improvement: the change order for extra work agreed on site.
- Translation agencies: the rush request that arrives halfway through a job.
- Editing and small presses: the “one more look” that was not in the contract. See how to stop scope creep with an AI agent that counts revision rounds.
- Short-term rentals: the same-day schedule change.
In each case, the fix is to agree on the change in writing at the moment it happens, with an agent preparing the paperwork and a person approving it. These are illustrations too.
How we'd start with you
If your extra work lives in text messages and memory, this is a good first workflow: one clear start (the request), one clear finish (the signed order) and a measurable goal (fewer unpaid changes).
- Discover: a free call to understand your business, goals and where time is going.
- Assess: we map the workflow, measure the baseline and give you a prioritized AI roadmap with a fixed-price quote.
- Pilot: we build the first agent, demo progress weekly and launch it with human approval switched on.
- Scale & run: once the results are proven, we add agents, form teams and keep everything monitored and improving.