How to read a service estimate

An estimate looks like a price. It is really a description of work with a number attached. The number is the part everyone reads first, which is why so many estimates are written to make the number look good and the description hard to find.

You do not need to be a contractor to read one well. You need to know what should be there, what is often missing, and which questions turn a vague document into a plan you can hold someone to.

Start with the scope, not the total

The scope is the sentence or list that says what will actually be done. Read it before you look at the price. A scope should name the room, the system, or the area, and it should describe the work in verbs: remove, repair, replace, install, reconnect, test, haul away.

If the scope says "bathroom remodel" and nothing else, you do not have an estimate. You have a category. Ask for a line-by-line scope that separates demolition, rough-in, electrical, tile, fixtures, painting, and cleanup. A kitchen and bath remodeling estimate should be especially detailed, because so much of the work is hidden until the room is opened. The same is true for a roofing estimate, an HVAC replacement, or a sewer line: the estimate should tell you what is being opened, what is being replaced, and what is being put back.

A useful test: could a different contractor read this scope and understand exactly what you expect? If not, it is not specific enough to compare.

The anatomy of a complete estimate

Most good estimates share the same sections, even when the formatting differs.

The header

Look for the company's legal name, address, phone number, and license number. Check the estimate number and the date. An estimate with no company identification is hard to enforce and easy to dispute.

The scope of work

This is the description. It should include quantities where they matter: square feet of roofing, linear feet of fence, number of fixtures, thickness of drywall, make and model of equipment. "Replace the water heater" is less useful than "remove the existing tank, install a new tank of the same capacity, reconnect the supply and vent, test for leaks, and haul away the old unit."

The line items

Labor, materials, equipment, permits, disposal, and tax should be visible, even if the company groups them into a few categories. You are not looking for a perfect breakdown. You are looking for enough detail to see whether the number is tied to the work.

The exclusions

This is the section people skip. It is also the section that decides what the job will really cost. Common exclusions include drywall repair, painting, landscaping, permit fees, engineering, asbestos or lead abatement, temporary heat, and repairs to hidden damage.

Exclusions are not automatically a problem. Every estimate has boundaries. The problem is an exclusion you did not see until the wall was open.

Allowances

An allowance is a placeholder for something not yet chosen, such as tile, lighting, or a vanity. The estimate carries a number for the allowance, and the final cost adjusts to what you actually pick. Ask what the allowance covers, what happens if you go over it, and whether the contractor marks up the difference.

The change-order process

A change order is how the job handles a surprise. The estimate should say who can approve a change, whether the price is fixed before the work proceeds, and whether work stops until you sign. If there is no process, the first surprise becomes a negotiation.

The schedule and payment terms

Look for a start date, a duration, and the milestones that trigger payments. Ask what happens if the weather or an inspection delays the job. Ask whether the deposit is refundable and what it covers.

The warranty

The estimate should state the workmanship warranty and the manufacturer warranty separately. Ask who honors each one and how a callback is handled. A warranty that exists only in a brochure is not part of the estimate.

What to compare, line by line

When you have two estimates, do not compare the bottom line first. Compare the scope, the exclusions, and the quantities. A lower total often means less work, not a better price.

If one estimate includes a permit and another does not, the totals are not telling you the same story. Adjust the comparison before you decide.

Estimate, quote, and invoice

These words are often used interchangeably, which causes trouble later.

• A quote is usually a fixed price for a defined scope. It may still have exclusions, but the number is meant to hold.
• An estimate is a projection. It is the contractor's best judgment based on what is visible. Hidden conditions can change it.
• An invoice is what you owe after the work is done.

Ask which one you are getting. If the document says "estimate," ask what would make it change and how much notice you will get. If it says "quote," ask how long the price is valid and what voids it. A verbal number is none of the three.

The number itself

You do not need to know the going rate for every trade to read a number intelligently. You need to see what the number is attached to.

Check whether tax is included. Check whether the permit and disposal are in the total or listed separately. Check whether the estimate assumes a quantity that seems low, such as a roof measured from the ground or a tile job measured without waste. Ask whether the price includes a contingency and who controls it.

If the total is far below the other bids, do not assume you have found a deal. Ask what is missing. The difference is usually in the scope, the materials, the insurance, or the crew.

Five questions before you sign

1. What is excluded from this estimate?
2. What could change the price, and how will I be told before the work proceeds?
3. Who pulls the permit, and is the fee included?
4. What is the payment schedule, and what has to be finished before each payment?
5. What does the warranty cover, and who honors it?

Ask for the answers in the document, not just in conversation. If the company sends a revised estimate, read the revision. A new total can hide a changed scope. The guide on how to vet a contractor covers the license, insurance, and reference checks that should come before you accept any number.

Red flags in the paperwork

• A one-line estimate with a single price and no scope.
• No company address, license number, or estimate date.
• An estimate that is actually a contract, with a signature line and no room to ask questions.
• Blank allowances or "to be determined" line items.
• A payment schedule that front-loads most of the money.
• No expiration date, or a price that is "subject to change" without a process.
• No mention of permits, disposal, or cleanup.
• A warranty described only as "standard."

One missing section is a question. Several missing sections are a document that will not protect you.

Signing and keeping records

When you accept an estimate, sign the version you read. Keep a copy of the signed estimate, the contract, every change order, the permit number, the inspection record, and the final invoice. Take photos before the work starts and after it is finished. If a dispute begins, the paper trail is the difference between a conversation and a stalemate.

You can also mark up the estimate with questions and ask for a clean revision. That is not being difficult. It is how a good contractor knows what you expect. If you have not booked the visit yet, what to ask before you book covers the questions that belong at that stage.

The bottom line

Read the scope, then the exclusions, then the number. Ask what is included, what could change, and who approves the change. A good estimate is not the one with the lowest total. It is the one you can explain to a neighbor in a minute, because it says plainly what will be done, what will not, and what happens if the job turns out to be bigger than it looked.