Use cases · Construction
Electronic signatures for construction and the trades
Get estimates, change orders and subcontractor agreements signed from the job site instead of the office. Owners, contractors and subs sign on a phone, and the time of each signature is recorded by the server, not typed in by hand.
3 documents a month free. No credit card.
Documents contractors send for signature
Estimates and bids
The client accepts your price by signing, with the date recorded automatically.
Change orders
Extra work, its cost and its effect on the schedule agreed in writing before the crew starts.
Subcontractor agreements
Scope, rates and insurance requirements signed by each sub before they're on site.
Work authorizations
Permission to start, signed by the owner or property manager on their phone.
Completion and punch-list sign-offs
The client's sign-off at handover, with a paragraph field for open items.
Safety acknowledgments
Site rules and safety briefings acknowledged by each worker.
Free templates to start from
Estimate approval template
The customer signs off on the scope and price of a job before work starts.
Change order template
Records a change to the agreed work, with its effect on price and schedule, before the changed work starts.
Subcontractor agreement template
Between a general contractor and a trade subcontractor: scope, price, payment, insurance and changes.
Conditional lien waiver template
Given in exchange for a progress payment: lien rights for that amount are released once the payment is actually received.
Each has a plain-language note on every section, downloads as Word or PDF, and can be sent for signature from SignThis. See all free templates.
How a change order gets signed on site
Step 1: Upload the change order
Fill it in on your laptop or tablet and export it as a PDF.
Step 2: Add the owner and your signer
Place signature and date fields, and add the project manager as a copy recipient.
Step 3: The owner signs on their phone
They get the link by email and sign with a finger, even standing next to you on site.
Step 4: Work goes ahead with a record
Everyone receives the sealed copy. The signing time comes from the server's clock, and the seal makes any later change detectable.
What contractors use most
Signing on a phone
Owners and subs sign in the phone's browser. No app to install and no account to create.
Server-recorded dates
The date-signed field is filled in by SignThis when the person signs, so it isn't typed in or backdated by hand.
Your own templates
Keep your change order and subcontract forms ready, with their fields in place.
Saving your own templates is included from Standard, and on every business plan.
Bulk send
Send a site safety acknowledgment to up to 25 workers at a time, each with their own copy.
Bulk send is included from Professional, and from Business Standard for teams.
Good to know before you send
- Mechanics' lien waivers use statutory forms in some US states, and a few states require them to be notarized. Check your state's rules; SignThis doesn't notarize.
- Public-sector work often requires bids through the agency's own procurement system.
- Once sent, a document is frozen. Put the price and schedule change in the PDF before you send it; a later change means sending a new version.
This is general information, not legal advice, and the rules differ between countries and states. For everything SignThis doesn't do, see what SignThis does not have.
Common questions
Can the owner sign a change order from their phone on site?
Yes. They open the emailed link on their phone and sign with a finger. No app and no account.
Do my subcontractors need an account?
No. Only the sender needs a SignThis account. Subs sign from the link in their email.
Can more than one owner sign a change order?
Yes. Add each owner or the property manager as a signer, in order or at the same time.
Can the office see which change orders are still open?
Yes. Your document list shows which documents are signed and which are still waiting, and reminders follow up on the open ones.
Can I get the completion sign-off before I leave the site?
Yes. Send it from your laptop or tablet; the client signs on their phone, and you both receive the sealed copy for the job file.
What if someone disputes when they approved a change?
The audit certificate records when the document was sent, opened and signed, using the server's clock, and the sealed PDF shows whether anything changed afterward.
How much does SignThis cost?
The free plan sends up to 3 documents a month, with no payment card and no end date. For more, plans start at $8 a month, billed monthly with no annual commitment. Signing is free for the people you send to. See every plan and its limits.