Construction change order template: stop doing free work.
Almost every contractor has done it: the client asks for "one small extra," you say sure, and three small extras later you're losing money on a job you priced correctly. A change order is the one-page document that stops the bleed. Here is what it needs, an example, and how to get it signed before you pick up a tool.
A construction change order is a written, signed amendment to the original contract that documents a change in scope, price, or schedule. It should include a sequential CO number, a reference to the original contract, a clear description of the change, itemized pricing with markup, any schedule impact, and the original and new contract totals, signed by both parties before the changed work begins. Verbal change orders are how contractors do free work.
- What a change order is, and why verbal changes cost money
- The elements every change order needs
- Construction change order example
- How to get change orders signed (before the work)
- Common change order mistakes
- Change orders, invoices, and the paper trail
What a change order is, and why verbal changes cost money
A change order is a formal amendment to the original construction contract. It records that the scope changed, what that change costs, what it does to the schedule, and what the new contract total is, with both parties' signatures. It is not paperwork for its own sake; it is the difference between billable work and a fight.
The trap is the verbal okay. The client says "while you're in there, can you also…," you nod, and now you've agreed to extra work with no documented price, no documented schedule impact, and no signature. When the final invoice arrives with that work on it, the client remembers a "small favor," not a $1,400 addition. You either eat it or damage the relationship collecting it. The change order removes the ambiguity before it can form.
01The elements every change order needs
1. Change order number and references
Sequential (CO-001, CO-002), with the original contract or job number and date. This keeps changes in order and tied to the job for both your records and the client's.
2. Description of the change
Exactly what is being added, removed, or substituted, in plain language. "Add 4 recessed lights to kitchen ceiling, including wiring and switch" beats "extra electrical." Ambiguity here is what gets disputed.
3. Itemized price
Added labor, materials, and equipment for the change, with your markup applied the same way you priced the original job. Price it like real work, because it is. Use the markup & margin calculator if you're pricing on the spot.
4. Schedule impact
How many days this adds to the timeline, if any. Scope creep that silently blows the completion date causes as many disputes as the ones that blow the budget. Put it in writing.
5. Original and new contract total
Original contract value, this change (+ or −), and the new adjusted total. The running contract value should never be a question. This is also what keeps your invoices reconciling against the contract.
6. Signature lines, signed before the work
Both parties sign and date. The entire value of a change order is that it's signed before the changed work starts. A signature after the fact is just a record of an argument you're already having.
02Construction change order example
A simplified structure (figures and names are illustrative):
03How to get change orders signed (before the work)
The document is easy. The discipline is the hard part. A few practices that make signing the norm, not the awkward exception:
- Set it up in the original contract. Include a clause that says all changes to scope require a written, signed change order before work proceeds. Now the change order isn't you being difficult, it's the process you both already agreed to.
- Price it on the spot. The faster you can hand over a number, the less friction. A client who waits three days for a change-order price starts to feel nickel-and-dimed; one who gets it in an hour feels taken care of.
- Make signing frictionless. A change order they can approve from their phone gets signed; a PDF they have to print, sign, scan, and email back sits in an inbox while your crew waits.
- Frame it as protection for both sides. It documents exactly what they're getting for the added cost. Most reasonable clients prefer the clarity.
04Common change order mistakes
- Starting the work on a verbal okay and writing it up "later."
- Bundling the change into the next invoice with no separate signed document.
- Pricing the change at cost, forgetting the markup the original job carried.
- Not noting the schedule impact, then getting blamed for the delay.
- No running contract total, so nobody agrees what the job now costs.
- Vague descriptions ("misc. extras") that invite a dispute.
- Letting small changes go undocumented because "it's only a little."
05Change orders, invoices, and the paper trail
A change order only protects you if it survives to the invoice. On the bill, approved change orders should appear as their own line items referencing their CO numbers, never buried inside the original scope, which is one of the fastest ways to get an invoice disputed (more in the construction invoice template).
Sitetraq keeps that trail intact: change orders are created against the job, priced with your markup, approved by the client, and then flow automatically onto invoices as broken-out line items with the contract total adjusted, so the work you actually did is the work you actually bill.
Change order FAQ
A change order is a written, signed amendment to the original construction contract that documents a change in scope, price, or schedule. It covers additions, deletions, or substitutions to the agreed work and adjusts the contract total accordingly. Without one, changed work is disputed work.
Yes. Work outside the original signed scope is billable, and a change order is how you document and price it. The mistake is doing the extra work first on a verbal okay and trying to bill it later. Price it and get it signed before you start, and it gets paid.
To be enforceable, yes, get both parties to sign and date the change order before the changed work begins. A verbal change order is technically possible in some situations but nearly impossible to enforce when a client disputes the final invoice. Written and signed is the only version that protects you.