What should be in a contractor's estimate
Updated 2026-01-15
Most disputes between homeowners and contractors are not disputes about honesty. They are disputes about a sentence that was never written down. A complete estimate is the cheapest insurance either side can buy, and a good contractor will be glad you asked for one — clear paperwork protects them too.
Work through the eleven items below against any estimate you receive. Anything missing is not necessarily a red flag; it is a question to ask before you sign.
The checklist, step by step
- 1
Confirm the header details
Legal business name, physical address, phone, email, and the state registration or license number where the state issues one. In Massachusetts that is the Home Improvement Contractor registration; in Connecticut it is the HIC registration; Rhode Island requires a Contractors' Registration Board number on the contract and in advertising. New Hampshire and Maine do not license general contractors, so verify insurance directly with the carrier instead.
- 2
Read the scope of work as a description of a finished thing
A scope should describe what will exist when the job is done, assembly by assembly — not a list of activities. "Install owner-supplied 30-inch range, vent to exterior through side wall" is a scope. "Kitchen work" is not.
- 3
Check that every allowance is a dollar figure with a unit
"Tile allowance: $9 per square foot, supply only, 120 square feet" is checkable. "Tile allowance TBD" is a change order waiting to happen. Allowances should say whether they include tax, delivery, and waste factor.
- 4
Find the exclusions list
A complete estimate says what is not included: permits, disposal, structural repair found at demolition, abatement, appliance purchase, landscaping restoration. An estimate with no exclusions list is not more inclusive — it is less specific.
- 5
Look for unit prices on the likely surprises
Sheathing per sheet on a roof, subfloor per square foot in a bathroom, joist sistering per foot. Naming a price now for something that may not happen is the single most useful thing an estimate can do.
- 6
Verify the payment schedule is tied to milestones
Payments should follow observable, inspectable progress — deposit, rough-in inspection passed, drywall complete, substantial completion, final. Massachusetts caps a deposit at one third of the total price. A schedule tied to calendar dates pays for time rather than work.
- 7
Confirm start and completion dates are stated
Massachusetts, Connecticut, and Maine all require dates in a residential home-improvement contract. Even where the law does not require them, a date establishes what "late" means.
- 8
Read the change-order clause
It should require written approval before the work happens and state the markup percentage on additional labor and materials. A verbal change order is the most common cause of a disputed final invoice.
- 9
Check the insurance certificates
General liability and workers' compensation, both current, and get the certificate from the insurance agency rather than a photo of one. If a subcontractor is injured on your property and the general contractor carries no workers' compensation, that exposure can reach you.
- 10
Find the warranty language
How long on workmanship, what manufacturer warranties pass through to you, and what voids them. One year on workmanship is common; two is better; on a roof the distinction between a material warranty and a full-system warranty is worth reading closely.
- 11
Confirm who pulls permits
The party who pulls the permit is the party the building department holds responsible. A contractor asking a homeowner to pull the permit is asking the homeowner to become the responsible party — that is a question worth pressing on.
Run the estimate through the checker
Upload the quote and we break it into line items, flag anything that looks high against regional cost data, and check the contract against your state's home-improvement rules.
Check my quoteFrequently asked questions
What is the difference between an estimate, a bid, and a proposal?
In practice they are used interchangeably, and none of them is binding until it becomes a signed contract. What matters is not the word on the document but whether the scope, allowances, exclusions, and payment terms are specific enough to hold both parties to.
Should a contractor charge for an estimate?
For a simple like-for-like replacement, usually not. For a detailed scope that requires measurement, design thinking, or subcontractor pricing, a paid estimate is reasonable and often produces a far better document. Many contractors credit the fee against the job.
How many estimates should I get?
Three is the usual advice and it holds up, as long as all three price the same scope. Three estimates for three different scopes tell you nothing. Write the scope first, then hand the same one to each contractor.
Is the lowest estimate usually the problem?
Not always, but a bid meaningfully below the others usually means something was left out, not that the contractor found efficiencies nobody else could. Ask what is excluded before assuming you found a deal.
Keep reading
- How to read a home inspection reportA 40-page inspection report is not a repair list. Here is how to read one in order, separate safety and structure from cosmetics, and turn it into a short list you can act on before your contingency expires.
- What to do after a home inspectionThe inspection is done and the contingency clock is running. Here is the order of operations for the next seven to ten days — what to chase, what to price, what to ask for, and when to walk.
- Home inspection red flags that actually matterWhich inspection findings are genuinely serious, which are routine for older homes, and what the serious ones cost to fix — with estimated ranges from the same cost engine used across Our Haus.
- How to negotiate repairs after a home inspectionHow to turn an inspection report into a repair request a seller will actually accept — what to include, what to leave out, whether to ask for repairs or a credit, and how to price the ask.
- Inspection contingency, explainedWhat an inspection contingency actually protects, how long you get, what happens if the deadline passes, and how waiving it changes your risk — in plain English for buyers under contract.
- What to ask for after a home inspectionA practical list of what belongs in a post-inspection request, what to leave off, how to word each ask, and what the common items cost — so your request reads as reasonable and gets a real answer.
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