Supplements & Hidden Damage
One of the most common questions we hear: "Why did the repair cost change after it started?" The answer is almost always hidden damage — and the paperwork that handles it is called a supplement.
What hidden damage is
A collision estimate starts from what's visible. But a bumper cover can hide a crushed absorber; a dented quarter panel can hide bent inner structure; a door skin can hide damage to the frame inside the door. Until panels come off during teardown, no one — not the shop, not the adjuster — can see everything the impact affected.
What a supplement is
When we find damage that wasn't on the original estimate, we stop, document it with photos, and submit a supplement request to the insurance company: an itemized addition to the approved estimate. The insurer reviews it (sometimes sending an adjuster to re-inspect) and approves the additional repair before we do the extra work.
What it means for you
- Supplements are normal. They're a routine part of collision claims, not a sign something went wrong.
- They can extend the timeline. Waiting on supplement approval and additional parts can add days. We keep you informed so you're never guessing.
- They're usually between the shop and the insurer. On a covered claim, an approved supplement is paid by the insurance company under the same claim — though your policy's deductible and limits still apply.
How we handle supplements
Documentation is where claims are won or lost, and it's where our insurance background matters most. We photograph hidden damage as it's uncovered, prepare the supplement with the itemized detail adjusters need, and follow up so approval doesn't stall. Our team never wants you to go without necessary repairs because of a paperwork problem — advocating through the supplement process is part of the job.
Read next: how the estimate process works.