Repairs & body shops
How do body shop insurance repairs work — and what are my rights?
The short answer: an insurance body shop repair runs on paperwork as much as on parts. The insurer writes a first estimate, you choose the shop, the shop opens the car up and documents anything the first estimate missed, the insurer approves the added work through supplements, and only then does the full repair proceed. Your core rights through all of it are simple to state: you choose the shop, you authorize the work, and you are entitled to see the estimates, approvals, and final bill that decide what gets done and what gets paid. Where repairs go wrong is usually in the gaps between those steps, not in any single step.
The repair claim, step by step
Most insurance repairs follow the same basic path, even though the details vary by insurer, shop, and policy. Knowing the order of the steps matters, because each one creates a document — and the documents are what decide payment later.
- Report the claim. You open the claim with the insurer and get a claim number. Everything after this — estimates, approvals, payments — ties back to that number, so keep it with your paperwork from the start.
- The insurer writes an initial estimate. This first estimate is often written from photos or a brief look, and it can only cover damage that is visible. Treat it as a starting point, not as the final price of the repair.
- You choose the shop. The choice of repair shop is yours in most cases. An insurer may recommend shops on a preferred list, but a recommendation comes with trade-offs in both directions — convenience on one side, your own relationship and trust on the other. See: Can I choose a body shop that is not on the insurer's preferred list? →
- The shop inspects and tears down. The shop looks at the car in person, then removes damaged panels and parts as needed. Teardown is where the real scope of the repair shows itself, because crash damage hides behind the parts you can see.
- Supplements cover what the first estimate missed. For damage or cost found at teardown, the shop documents it — typically with photos — and files a supplement, an additional estimate for the added work. One repair can have several supplements as more is uncovered.
- The insurer approves. An adjuster reviews the supplement, sometimes by re-inspecting the car, and approves, trims, or denies lines. Approved scope is what the insurer has agreed to pay for, so approvals are worth getting in writing.
- Repairs proceed. The shop completes the approved work: straightening, replacing, refinishing, and reassembling. Work that is still waiting on approval typically waits with it, which is why approval delays show up as repair delays.
- The final bill and payment. The shop issues a final bill for the work done. The insurer pays the approved amount, often directly to the shop or to you, and any deductible under your own policy is typically settled as part of the bill. Compare the final bill line by line with what was approved.
- The pickup walk-through. Before you drive away, walk around the car with the shop: panel fit, paint match, lights and features working, and no new noises or warning lights. Raise anything you spot before you leave, and keep the final paperwork.
None of these steps requires you to be an expert. They require you to stay reachable for approvals, to read what you sign, and to keep the paper trail — estimate, supplements, approvals, and final bill — in one place.
How the adjuster evaluates the damage
Behind the steps above sits the adjuster's evaluation — the process that turns your damaged car into the first estimate, and later into approvals or denials. It helps to know which kind of look your car has actually had, because the three routes see very different amounts of damage:
- An estimate written from photos. The fastest route, and the shallowest: the adjuster writes from the pictures you or the shop send, and can only price what the photos show.
- A field adjuster's in-person inspection. The adjuster sees the car — at the shop, at your home, or at a lot — and writes the estimate on what is visible in person. Still a surface look, but a real one.
- The shop's teardown. The deepest look: damaged panels and parts come off, and the damage hiding behind them becomes visible. This is the inspection the first two routes cannot do.
Whichever route comes first, the estimate is typically built the same way: visible damage first, labor priced at the insurer's rates for your area, and parts priced by category — original equipment (OEM), aftermarket, or recycled — as your policy's wording allows. Hidden damage is not so much denied by that first estimate as not yet seen by it.
When teardown finds more, the shop files a supplement, and the adjuster may re-inspect — in person, or from the shop's photos and documentation — before approving the added work. Running underneath all of it is a threshold judgment: if the repair cost climbs close to what the car is worth, the claim can stop being a repair evaluation and flip to a total-loss evaluation instead. That side of the line is covered in the guide to fighting a low total-loss offer.
Where repairs actually get stuck
Most stalled repairs are not stalled because someone is lazy or dishonest. They stall at one of three predictable friction points, and each one has a different fix.
Parts fights: OEM versus aftermarket
Insurers often write estimates using aftermarket or recycled parts, while shops and owners often want original equipment manufacturer (OEM) parts — the parts made by or for the car's maker. Which parts your repair gets is decided in most cases by your policy's parts language, not by whoever argues loudest. If your insurer will not approve the parts you believe the repair needs, the policy wording is the first place to look: What should I do if my insurer will not approve OEM parts? →
The estimate gap
The insurer's first estimate and the shop's estimate rarely match. The insurer's is written on visible damage at the insurer's rates; the shop's is written in person on the full scope it expects to repair. That gap is normal, and the supplement process exists to close it with documentation. It becomes a problem only when the gap is treated as a take-it-or-leave-it number instead of a documented disagreement: What if the insurance estimate is lower than the body shop's estimate? →
Time: approvals, parts, and storage fees
A repair clock runs on approvals and parts deliveries as much as on shop labor. While a car sits waiting — for a supplement decision, for a part, for a dispute to resolve — some shops charge storage fees, and who pays those fees during a dispute is its own argument. Ask early how the shop handles storage and what a typical wait looks like, so time does not quietly turn into a second bill: Do body shops charge storage fees during insurance claim disputes? → and How long can a body shop keep my car during an insurance claim? →
Body shop repairs, question by question
Each part of the process above has its own guide. Start with the question closest to where your repair is stuck right now.
- How do auto body shops negotiate with insurance companies? — The back-and-forth over estimates, labor rates, and parts, and where you fit in.
- What should I do if my insurer will not approve OEM parts? — What your policy's parts language decides, and the steps to take when approval is refused.
- Can I choose a body shop that is not on the insurer's preferred list? — Your right to pick the shop, and the real trade-offs of going off the insurer's list.
- What if the insurance estimate is lower than the body shop's estimate? — Why the two numbers differ, and how the gap gets documented and closed.
- Can a body shop refuse to work with my insurance company's estimate? — What a shop can and cannot decline, and what your options are when it does.
- How do body shops handle hidden damage found during repairs? — What happens when teardown reveals damage the first estimate never saw.
- What are supplements in auto body repair claims? — The additional estimate that covers what the first one missed, and how approval works.
- How do I get a body shop to cover all damages in my claim? — Making sure every damaged item is inspected, documented, and on the claim.
- What rights do I have when an insurer underpays a repair bill? — Your options when the payment comes in below the approved repair cost.
- Do body shops charge storage fees during insurance claim disputes? — When storage charges appear, and who typically ends up paying them.
- How long can a body shop keep my car during an insurance claim? — What sets the timeline, and what to do when the wait stretches out.
- Should the body shop deal with the insurance adjuster directly? — When to let the shop handle the adjuster, and what should still come through you.
Frequently asked questions
Can I pick any body shop I want for an insurance repair?
In most cases, yes — the choice of shop is yours. Insurers may recommend shops on a preferred list, and those shops can sometimes move faster because their paperwork with the insurer is already set up, but a recommendation is not the same as a requirement. Exact rules and any limits vary by state and by policy, so check your policy and your state insurance department if an insurer tells you that you have no choice.
Who pays the body shop — me or the insurer?
The insurer pays the amount it approved, often directly to the shop or to you to pass along to the shop. You owe the shop for work you authorized, which is why the approved scope and your written authorization should match. If you are claiming through your own policy, your deductible may apply and is typically paid as part of the repair bill.
What if the repair costs more than the insurance estimate?
The shop files a supplement — a documented request for the additional damage or cost the first estimate missed — and the insurer reviews and approves it before that extra work is done. Do not authorize unapproved work without understanding that you may be responsible for the difference. Keep the supplement, the approval, and the final bill together with your claim paperwork.
How long should an insurance repair take?
There is no fixed clock. The timeline depends on the damage, parts availability, and how quickly supplements and approvals move, not on the shop alone. Ask the shop for a written timeline and a regular update schedule so delays are explained as they happen, not after the fact.
How do insurance adjusters evaluate car damage claims?
Adjusters typically evaluate damage one of three ways: an estimate written from photos, a field adjuster's in-person inspection, or the shop's teardown, which gives the deepest look. The first estimate is usually based on visible damage, with labor priced at the insurer's area rates and parts by category — original, aftermarket, or recycled — according to the policy wording. When teardown finds more damage, the shop files a supplement and the adjuster may re-inspect before approving it. If the repair cost approaches the car's value, the claim can shift from repair to a total-loss evaluation.
Auto repair practices and insurance rules vary by state and by policy. Check your own policy documents and your state's insurance department, or talk to a licensed professional, before acting on a claim.
Body shop repair claims at a glance
| Stage | What to watch |
|---|---|
| The first estimate | Written on visible damage — expect it to grow after teardown |
| Parts | Policy language decides OEM vs aftermarket in most cases |
| Hidden damage | Handled by supplement — photos are the proof |
| The timeline | Approvals and parts, not the shop alone, set the pace |
| The final bill | Compare it line by line with what was approved |