The practical difference
An estimate is a good-faith prediction of what a job will likely cost. A quote is a firm price you commit to. The words are often used interchangeably, but the legal and customer-experience implications are different.
When to use each
Send an estimate when the scope isn't fully knowable up-front — repairs behind a wall, unknown drainage issues, or discovery work. Send a quote when the scope is clear enough that you can stand behind the number: panel upgrades, roof replacements, standard installs. For the math behind getting to that number, see how to estimate a contractor job.
What every contractor quote should include
- Customer name, address and job site.
- Itemized materials and labor with quantities and unit price.
- Taxes broken out on their own line.
- Deposit terms and payment schedule.
- Scope of work and what's explicitly excluded.
- Validity period (e.g. good for 30 days).
- A signature block for the client to accept.
Making it signable
Emailing a PDF works, but signed digital quotes close faster and remove the "did you see my email?" cycle. JobWorks365's quoting software supports e-signature and turns a signed quote into an invoice with one tap.