Service authorization
How to write a service authorization
Document a repair, treatment, installation, or field service so the customer can understand and approve it before work begins.
Read the guide →
Field-service resource center
Work approval guides for the field
Clear guidance for describing work, explaining the price, collecting customer approval, and keeping a complete record before the job begins.
Work approval basics
Useful across field-service businesses
Document choice
Estimate vs. work proposal vs. service authorization
Choose the right customer approval document before planned work, changed work, or a newly recommended field service.
Read the guide →Customer communication
How to get customer approval by text or email
Send a clear approval request, reduce confusion, and give the customer a simple path to sign or ask a question.
Read the guide →Field workflow
How to document work before you start
Build a reliable customer approval record with scope, line items, photos, job references, delivery history, and a signed PDF.
Read the guide →Construction and remodeling
Change order guides for contractors
Keep these focused contractor resources when an existing construction scope or price changes.
Writing
How to write a construction change order
The customer, project, scope, reason, price, photos, and approval details a useful change order should contain.
Read the guide →Pricing
How to price a construction change order
A practical framework for labor, material, equipment, overhead, profit, tax, credits, and disruption costs.
Read the guide →Workflow
Change order vs. estimate vs. invoice
Learn what each document does and where a signed change order fits between the original proposal and final billing.
Read the guide →Need a form you can use today?
Download the free printable construction change order template, or use JustSignOff to send the right approval by text or email and retain the signed PDF.