Published 2026-09-14 by Unified Public Advocacy · Part of the Fire Loss Resource Hub
The short version
Differences between a contractor estimate and an insurance company estimate are normal. The NAIC says so directly: differences in construction estimates are common.
The goal is not to win an argument about a total. It is to agree on a scope of loss — a detailed list of the quantities of materials, labor, overhead and profit, code compliance work, and every item required to repair or rebuild. Once the scope is agreed, the total usually follows.
So compare the two documents line by line, not bottom line to bottom line. Most gaps come from something being missing, not from someone pricing the same thing differently.
- Agree the scope first; the total is downstream of it.
- Compare quantities and included items before comparing prices.
- Ask contractors for bids that detail materials, prices and labor line by line.
- Missing scope is a more common cause of a gap than disputed pricing.
- If agreement genuinely fails, appraisal and arbitration exist — check your policy.
Why there are two estimates at all
The insurance company estimate is prepared by a company adjuster or an independent adjuster working for the insurer. It is built in estimating software, priced from a database of unit costs for your area, and it determines what the insurer proposes to pay.
A contractor estimate is prepared by the business that would actually do the work, priced on what that business would charge to do it. You are not required to obtain one. NAIC guidance is nevertheless that written bids help, and that they should detail the materials to be used, the prices of those materials, and labor on a line-by-line basis.
These are two different exercises by two different parties with different information, so they rarely land on the same number. That is expected and is not, by itself, evidence that anyone has done anything wrong.
How to read either estimate
Both documents are usually organized the same way: broken down by room or area, then into individual line items, each showing a description, a quantity, a unit price and an extended total, with subtotals and a summary at the front or back.
Read the summary page first. It tells you how the total was reached — the replacement cost, any depreciation deducted, the deductible, and the net amount proposed. Then work backwards into the detail to see how those figures were built.
Two questions drive everything after that. Are the quantities right and complete for the actual damage? And does each line describe work that genuinely needs doing, in the way it would actually be done?
Where the gap usually comes from
When two estimates for the same fire differ substantially, the cause is more often an absence than a disagreement. These are the categories worth checking first.
- Omitted rooms or areas, particularly rooms with smoke or water damage but no fire damage.
- Quantities that undercount — partial drywall where a full room needs replacing, a slope of roof where the roof needs it.
- Work required to reach the damage: removing and resetting fixtures, protecting adjacent areas, access and containment.
- Debris removal and disposal.
- Smoke and odor treatment, including ductwork and concealed cavities.
- Contents cleaning versus contents replacement.
- Code compliance work triggered by the repair, where the policy covers it.
- General contractor overhead and profit, where a job needs multiple trades coordinated.
- Unit prices that do not reflect current local costs.
Comparing the two properly
Put the two documents side by side in the same order, room by room. For each room, list what appears in one and not the other before you look at a single price. That list of differences is the real conversation.
Where something is missing, the useful question is not why is your number low — it is what does this line cover, and where is the work to do X. A specific question about a specific omission is answerable. A complaint about a total is not.
Where the same item is priced differently, ask what the unit price is based on and whether it reflects current local costs for that work. A contractor who will not honour their own bid at their own price is a different problem, and worth knowing about early.
Agreeing a scope of loss
The NAIC frames the target precisely: ideally, you and the insurance company should reach agreement on a scope of loss — a detailed list of the quantities of construction materials, labor, profit and overhead, building code compliance, and every single item required to repair or rebuild your home.
That is the document worth pushing toward. Once the scope is agreed, disagreements shrink to pricing, which is narrower and easier to resolve. Once you have submitted everything the insurer needs, including written contractor estimates, the adjuster calculates the total from the agreed scope.
If you cannot agree
There are routes that do not involve court, and your policy determines which are available to you.
Appraisal resolves disagreements about cost. It begins with two appraisers comparing their estimates, and it determines cost only — it does not decide whether the policy covers something. It is not a court proceeding, and you will have to pay some of the cost; how much depends on your state law. Note one consequence: if your policy has an appraisal clause, you must go through appraisal before you can sue the insurer.
Arbitration is a legal process without a court hearing. A neutral arbitrator hears both sides and the decision is usually binding, so an appeal to court is generally not available afterwards. Some policies require it; others set out how it works if both sides agree to use it. Costs are usually split, though some state laws allocate them differently.
Some states also offer a mediation process. Your state insurance department can tell you what is available where you live, and it is free to ask them.
Choosing a contractor without getting hurt
Large losses attract people who are very good at approaching households in the first week. A few habits protect you without slowing the repair down.
Take written, itemized bids. Check licensing and insurance independently rather than from a business card. Be cautious about large up-front payments, about anyone who requires you to sign before you have read it, and about anyone whose offer is contingent on you signing today. And do not sign over your insurance claim rights to anyone without understanding exactly what you are signing away.
Questions to ask about an estimate
- Can you walk me through how the total on the summary page was reached?
- Which rooms and areas are included, and which are not?
- What does this line item actually cover?
- Is debris removal included? Smoke and odor treatment? Contents cleaning?
- Is general contractor overhead and profit included, and if not, why not?
- Are the unit prices current for this area?
- Does the estimate include work required by current building codes?
- What would you need from me to add a missing item to the scope?
Related on this site
Sources
The factual statements on this page about insurance claim practice, fire recovery and mortgage handling come from the primary sources below. Where something depends on your specific policy or on the law in your state, this page says so rather than generalizing.
- Post-Disaster Claims Guide
National Association of Insurance Commissioners - What You Should Know About Settling a Homeowners Insurance Claim
National Association of Insurance Commissioners - Insurance Departments — directory of all 56 jurisdictions
National Association of Insurance Commissioners