Insurance claim supplement: getting paid for missed or hidden damage

A supplement adds to a claim the insurer has already estimated. It’s a routine part of many repairs, not a sign that something went wrong. Common reasons include:

• Hidden damage: rotted roof decking under torn shingles, wet subfloor under flooring, or soaked insulation behind drywall.
• Missed items: line items left off the first estimate, like vents or baseboards.
• Code items: work the building inspector requires today, often paid from Ordinance or Law coverage up to that coverage’s separate limit.
• Quantity or price changes: the job turned out bigger, or a required material costs more than estimated.

Items often added on roof jobs

Roof supplements commonly cover replaced decking, drip edge, starter strip, ice and water barrier where local code calls for it, extra labor for steep or tall roofs, permits, debris disposal, and overhead and profit when a general contractor runs several trades. Whether each one is owed depends on your policy, your local code and the facts.

Florida law defines a supplemental claim as one for added loss from the same peril on a claim the insurer already adjusted, or for costs that come up while finishing repairs on an open claim. Two things are handled differently: a disagreement over the first estimate (see how to dispute an estimate) and the release of held-back depreciation, covered below.

The most important step happens before anyone covers the damage back up.

1. Pause that area if you safely can. Ask the crew to leave it open until it’s documented.
2. Photograph it three ways: a wide shot of the room or roof slope, a medium shot, and close-ups with a tape measure in frame.
3. Keep proof of moisture or rot. Ask your contractor to photograph moisture meter readings and save a sample of damaged material.
4. Tell the insurer in writing right away. Ask whether it wants to re-inspect before work continues.

On roof replacements, soft or rotted decking is the classic example. With water losses, it’s often damage inside walls or under floors.

Your contractor usually finds the damage, photographs it and writes the supplement estimate, often in Xactimate, the estimating software many insurers use. That makes the pricing easy for the adjuster to compare.

The claim is still yours, because you’re the policyholder. Ask for a copy of every supplement before it goes out. State rules on contractors differ. In Texas, a contractor may discuss its estimate and supplements with your insurer, but may not argue coverage for you or act as your public adjuster on a job it’s doing. Florida lets a contractor explain its repair bid to the insurer, but not handle your claim unless licensed as a public adjuster.

A change order (a signed change to your contract’s scope and price) is between you and your contractor. It doesn’t mean the insurer agreed to pay. Read any contract that mentions your insurance benefits closely. An assignment of benefits hands your claim rights to the contractor, and Florida generally bars them under residential policies issued on or after January 1, 2023.

The person who approves it is often a desk adjuster who never visits your home, so make the package explain itself. Ask your insurer whether it wants a particular form or online upload. If not, a clear package like this does the job.

Ask for a written answer on each line, and log every call in your claim diary.

Your policy sets the first rules, so read the sections on duties after a loss and on replacement cost. Some policies based on the standard form ask you to tell the insurer within 180 days after the loss if you plan to claim full replacement cost later. State law can add its own rules:

• Florida requires notice of a supplemental claim within 18 months after the date of loss, and notice of a reopened claim within 1 year.
• California gives at least 12 months from the first actual cash value payment to collect full replacement cost, and at least 36 months for losses tied to a declared state of emergency, with 6-month extensions for good cause.

Other states differ. Tell your insurer about new damage as soon as you find it, rather than saving items for later.

Many replacement cost policies pay in two parts: the actual cash value (repair cost minus depreciation for age and wear) first, then the held-back depreciation after repairs are done. Supplement items usually follow the same pattern, so depreciation on them may be held back too.

When the work is finished, send the final invoice, proof of completion and any approved supplements together. That’s usually what releases the rest, as explained in our guide to getting held-back depreciation paid. If you have a mortgage, the check may also need your lender’s signature.