Customers ask for "a quote" and "an estimate" as if they were the same thing. Often they are treated that way. But the two words carry different expectations about how firm the price is, and that difference is where many disputes start. This page explains the usual meaning of each, when to use which, and what to put on the document so the customer knows exactly what they are agreeing to.

This is general information, not legal advice. Rules on binding prices, change orders and consumer contracts vary by state, so have your documents reviewed for where you work.

What an estimate usually means

An estimate is an informed approximation of what the job will cost. It is based on what you can see and measure before the work starts, and it allows that the final number may change if conditions are different from what you expected. Estimates are common when:

You cannot see everything (inside walls, under old concrete, below the soil)
Quantities may change (how much rock comes out of the post holes)
The customer has not decided on materials yet

A good estimate still lists the assumptions it is based on, so that if the price changes, both sides can see why.

What a quote usually means

A quote is a fixed price for a defined scope of work. If the scope does not change, the price does not change. Quotes are common when:

You have measured everything and the job is well defined
Materials and finishes are chosen
The customer wants certainty before they commit

The tradeoff: if you quote and you are wrong, you usually absorb the difference. That is why a quote needs a clear scope and a clear list of what is not included.

Why the word on the document matters

If your document says "Estimate" but reads like a firm price, or says "Quote" but you plan to adjust the total later, you are setting up an argument. Pick the word that matches how you actually price, and use it consistently on the document, in your texts and on the invoice. Some contractors call everything an estimate; others call everything a quote. Either works if the terms are clear.

What to put on either one

Your company name, contact details and license number where required
The customer and job address
An itemized scope: line items with quantities, units and rates
Options, if the customer is choosing between materials or approaches
What is included and what is not
Assumptions (measurements, site conditions, material choices)
How changes are handled: priced in writing before the work is done
Deposit and payment terms
How long the price is valid
A place to sign and date

When an estimate becomes the agreement

Once the customer signs and you both agree on the scope and terms, the signed document is what you are working from, whatever you call it. That is why it is worth getting a signature before you order materials or start work, even on small jobs. If the scope changes after that, write the change down with its price and get it approved too.

Changes after signing

Most price disputes are really scope disputes. A homeowner adds a gate, wants a thicker slab, or asks you to "just" haul away one more thing. Handle every change the same way: describe it, price it, and get it approved in writing before you do it. A short change-order line on the original document or a new signed quote works.

Validity dates

Material prices move. Put a "valid until" date on every estimate and quote, often 15 to 30 days. If the customer signs after that date, you can re-price instead of eating a supplier increase.

Which should you use?

Use an estimate when unknowns are real and you need room to adjust, and spell out the assumptions.
Use a quote when the scope is clear and the customer values a fixed number.
Either way, itemize, list exclusions, set a validity date and get a signature.

Doing this in QuoteMaven

QuoteMaven calls its documents quotes, and the labels can be renamed, so you can call them Estimates if that is how you price. Either way, the customer signs in their browser, and a signed quote moves to Invoices automatically.

Free templates

If you prefer to start on paper, use one of our free templates. Each one is itemized, has blank prices and includes exclusions and terms:

Quick answers

Is an estimate binding? Usually it is treated as an approximation, but a signed estimate with a clear scope is still an agreement about that scope. Check your state's rules.
Can a quote change? Only if the scope changes, which is why changes should be priced and approved in writing.
Which word do customers expect? Either. What they care about is whether the number will move, so say it plainly.

General information, not legal or engineering advice. Follow local code and have your terms reviewed for your state.

Quote vs Estimate: What's the Difference?