How to get a change order signed on site
The best time to get a change order signed is the moment the change comes up, while the owner is standing next to you looking at the problem. An hour later they're at work, and a week later they remember it differently. Here's a routine that gets a clear, signed change order done on site in about five minutes, from a phone or an iPad.
Updated November 9, 2026 · 3 min read
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Stop before the work, not after
Pausing the crew for five minutes feels slow. Doing extra work on a verbal OK is slower when the invoice gets disputed, and in some states it can cost you the right to collect. California's home improvement rules, for one, won't enforce a change order against the homeowner unless it's in writing with the scope, the price change and the effect on the schedule. A verbal agreement is hard to prove; a signed page isn't.
What to put on a field change order
- What changes and why, in one or two sentences: "Replace 12 ft of rotted sill plate found behind the kitchen wall." Say whether the owner asked for it or the job revealed it.
- How it's priced. A fixed price when you can see the whole job. For hidden damage, time and materials with a not-to-exceed figure, so the owner knows the worst case.
- The schedule. Days added, or "no change." It matters as much as the money if there's a completion date in the contract.
- The new contract total, worked out once, carefully. It's the number the owner signs.
- When it's paid: with the next draw, on completion, or up front for special-order materials.
On site, step by step
- 1
Take the photos first
Shoot the problem from far and close before anyone touches it. They show why the change was needed long after the wall is closed up.
- 2
Start the change order
In the SignMaster app, tap Send for signature and pick your change order template. Working from a carbon pad? Choose Scan paper and scan the handwritten form instead.
- 3
Fill in your numbers
Type the description, price, days and new total into the boxes you set up on the template, so they print on the page and the owner signs them as written. To put the photos in the document, add them as pages: when scanning in the app, tap Add pages, then Photos; in the web editor, use Insert pages after in a page's menu.
- 4
Add the owner and yourself
Owner first, you second. Pick the owner from your contacts; they're probably there from the original contract. Two owners on the deed? Add both.
- 5
Hand over the phone or iPad
Send it, then choose Sign in person. The owner accepts the e-signature consent and signs, field by field. Signing mode fills the screen and only your Face ID, Touch ID or passcode ends it, then the app takes you straight to your own signature.
When both signatures are in, everyone gets the signed PDF by email with a certificate of completion noting it was signed in person. The owner leaves with a copy before the saw starts, which heads off most later arguments.
When the owner isn't there
Send the same envelope by email and call them while it's fresh. SignMaster emails the link, and you can Copy link from the envelope to text it as well; they sign on their phone at work. Put an Approve and a Decline button on the form so a no comes back with a reason instead of silence. If they won't sign at all, hold the extra work and read what to do when a customer won't sign a change order.
Set the template up once, in the office
Do the fiddly part at a desk: upload your change order form, add text boxes for description, price, days and total, and place the owner's and your signature fields. On site you only type numbers and hand over the device. Creating a contract template shows how.
Questions? Answers.
Is a change order signed on a phone legally binding?
Generally, yes. Under the federal ESIGN Act a signature can't be denied legal effect just because it's electronic. The change order still needs whatever terms your state and your contract require.
Can I start the extra work before the change order is signed?
You can, but you risk not being paid for it. Many contracts require a signed change order first, and some states won't enforce one that isn't in writing. Five minutes on site is cheaper.
Does the homeowner need the SignMaster app?
No. They sign on your device in person, or from a link in their phone's browser. The app is for you and your crew.
Is there an Android app?
No. On Android, use SignMaster in the phone's browser: templates, sending and signing in person all work there.
Sources
- California Business and Professions Code § 7159.6, extra work and change orders · leginfo.legislature.ca.gov
- 15 U.S.C. § 7001, ESIGN Act general rule and consumer consent (govinfo) · govinfo.gov
