Your claim was denied. Read the clause first.

Almost every denial is correct on its own terms and wrong on the facts. The work is figuring out which clause they cited, and whether the facts they assumed are the facts.

Compiled from filed policy formsSources cited on every pageUpdated 2026-11-03

An appeal that says "please reconsider" gets nothing. An appeal that quotes the clause and corrects one fact gets paid. That is the whole method — everything below is detail.

Step 1 — find the clause, not the reason

The letter will phrase it conversationally: "water damage is not covered," "the loss resulted from flood," "maintenance-related." Find the clause number behind that sentence. Most denials rest on one of four:

What the letter says	Clause behind it	What to check
"Flood / surface water"	Water damage exclusion, limb (a)	Did the water actually come from outside? A pipe failure is peril 13, not flood.
"Seepage / repeated leakage"	Neglect or repeated seepage	When did it start, and when did you report it? The timeline is the case.
"Maintenance issue"	Wear and tear, deterioration	Is there an event — a storm, a break — or only ageing?
"Two causes, one excluded"	Anti-concurrent causation	Which cause set the loss in motion? This is the most technical fight on the list.

Step 2 — check the clock

There are three separate clocks, and they are not the same deadline:

Proof of loss — usually the shortest, and often stated in the policy conditions.
Internal appeal — the insurer’s own review process; the window is set by the policy and by state rules.
External review — an independent reviewer, available in every state for many types of claims, with its own filing window.

We are verifying state-by-state deadlines against each department of insurance before publishing a table. Use the calculator to track your dates, and confirm the window with your state regulator.

Track your datesEnter the denial date and the window stated in your policy.

Open the deadline tool

Step 3 — appeal with the record, not with feeling

Quote the clause they cited, and the clause that actually applies.
Correct one fact per paragraph. Do not argue three things at once.
Attach the evidence that proves the fact: the plumber’s invoice with the failure date, photos with timestamps, the repair report.
State what you want: reclassification of the cause, or payment under a specific coverage.

When the denial is probably right

Not every denial is worth appealing. If the loss was surface flooding and you had no flood policy, the exclusion applies. If the damage accumulated over years, the neglect exclusion applies. The value is in knowing quickly which kind you have — the four-clause table above is the fastest way to tell.

Frequently asked

How long do I have to appeal a denied claim?

It depends on your policy and your state. There is no single national deadline, and the proof-of-loss deadline is often shorter than the appeal deadline. Check the conditions section of your policy and your state insurance department.

Do I need a public adjuster?

Not for a clean coverage dispute where the clause is clear. A public adjuster is most useful when the dispute is about the size of the loss rather than whether it is covered — and they typically take a percentage of the settlement.

Can I appeal without a lawyer?

Yes. Most internal appeals are won on the clause and the documentation. A lawyer becomes relevant when the dispute turns on bad faith or a large sum.

Sources

Form Safeco HO-4, form CHO-6004/EP 10/99 — Section I exclusions preamble (anti-concurrent causation); exclusions 2 and 11; peril 13
Form Mercury HO-4 — Section I exclusion 3 and peril 12(d)