The process
The collision repair process, step by step
What happens to your car between the day you drop it off and the day you drive it away — and why the estimate written on day one is almost never the final one.
The short version
Your car is estimated, the claim is approved, and then the damaged area comes apart. Only with the panels off can anyone see what the impact actually did.
From there the work runs in a fixed order. Structure first, then panels, then paint, then everything goes back on.
Nothing is handed back before it has been inspected and driven. The last stage is a walk-around with you, at the car, before you take the keys.
If you have not opened a claim yet, start with what to do after an accident. If the claim is already open, the money side is covered on how insurance claims work at our shop.
Stage by stage
Nine stages, in the order they happen
-
Estimate and intake
We look at the car in person, or at the photos you send, and write an estimate of the damage that can be seen. You sign a repair authorization before anything is removed or ordered.
-
Insurance approval
The estimate goes to your insurer with photos and the claim number. Under California law the shop is your choice, and your insurer owes the reasonable cost of repair at the shop you pick.
-
Disassembly, or teardown
Covers, trim, and damaged panels come off so the structure behind them is visible. Whatever was hidden gets documented and written up as an addition to the estimate.
-
Structural work, if needed
If the impact moved the body structure, it is measured and brought back to the manufacturer's specification. No panel is fitted over a structure that is still out of position.
-
Body and panel work
Panels are repaired or replaced and metal is straightened. Gaps and edges are set against the undamaged side of the car, then the surfaces are prepared for paint.
-
Refinishing
Primer, sealer, color mixed to your vehicle's paint code, then clear. Color is blended into the neighboring panels so the repair does not end at a hard line.
-
Reassembly
Trim, lamps, moldings, glass, and covers go back on. Electrical items are reconnected and checked, and fluids are brought back to level.
-
Quality control and road test
The car is checked against the estimate line by line — fit, finish, and function. Then it is driven, because some things only show themselves moving.
-
Delivery walk-around
We go around the car with you, panel by panel, before you take the keys. You leave with the paperwork listing the repairs and the parts that were used.
Teardown, and why the first estimate is provisional
Every first estimate is written from the outside of the car. It lists what a trained eye can see with the panels still on.
Collision energy travels. A bumper cover with one crease can hide a broken absorber, a bent reinforcement bar, cracked brackets, or a radiator support that shifted.
Teardown is the stage where the guessing stops. With the damaged area apart, the estimate is rewritten to match what is actually there — and that rewrite is what the industry calls a supplement.
What a supplement is, in plain terms
A supplement is an addition to the original estimate. It covers parts and labor that nobody could see when that estimate was written.
It is not a shop marking up the job. It is a revised bill sent to your insurer for work the car turned out to need.
Supplements are routine. Most cars with more than a surface scuff produce at least one, and finding one is a sign the damage was inspected properly rather than papered over.
The sequence is always the same: we document the additional damage with photos and part numbers, send it to your adjuster, and wait for approval before that portion of the work goes ahead. Your deductible is set by your policy and does not change because a supplement was written. More on that in how we handle the claim.
Where it is decided
The two stages that decide how the car turns out
Structure
A structure that is even slightly out of position shows up later as uneven gaps, tire wear, or a door that needs a shove. It is corrected before panel work starts, never after. See frame and structural repair.
Finish
Paint is where a repair is judged in daylight. Color is mixed to your vehicle's code and blended into adjoining panels so the eye cannot find the edge. See painting and refinishing.
Honest answer
What a repair actually waits on
Parts
Some parts are close by. Others come from the manufacturer, and one back-ordered bracket can hold up an entire reassembly.
Supplement approval
Damage found at teardown cannot be repaired until your insurer approves it. That step sits with your adjuster.
Hidden damage
Structural damage under a panel changes the plan. Structure is corrected first, and every stage after it follows that work.
Curing
Refinishing runs in layers, and each layer has to cure before the next goes on. Rushing that sequence shows in the finish.
Where you fit in
You are not expected to track any of this. We keep you updated as the car moves through the stages, and you can call and ask at any point.
Two moments do belong to you. You authorize the repair before it starts, and you sign off at the walk-around before you take the car home.
Questions about what your car needs are welcome before you commit to anything. Send photos for a free written estimate, or read more about collision repair in Van Nuys and our technician certifications.
Questions
What people ask about the process
What is a supplement?
A supplement is an addition to the original estimate, written after teardown shows damage that was not visible from the outside. It goes to your insurer with photos and part numbers for approval. It revises what the insurer pays toward the repair — it is not a new charge invented by the shop.
Why does the repair take longer than the first estimate said?
Because the first estimate is written with the car still assembled. Teardown regularly finds damage behind the panels, and that work has to be documented, approved by your insurer, and supplied with parts before it can be done. A repair also waits on parts availability and on the refinishing stages, which have to cure in sequence.
Can I check on my car while it's being repaired?
Yes. Call and ask where your car is in the process, and we will tell you which stage it is at and what it is waiting on. If you want to see the vehicle in person, call ahead so we can arrange a time — the shop floor is a working area, not a waiting room.
Damaged car? Start with a photo.
Text or upload photos of the damage and we'll come back with a preliminary estimate and next steps — usually the same day. Prefer to talk? Call. A person answers during shop hours.