LetterFill in a few fields, then copy, print or download
Claim Dispute and Supplement Letter Generator
Choose whether you are asking for a supplement, a review of the amount, or reasons for a denial, add your claim details, and get a plain letter to copy, print or download as text. Nothing you type leaves your browser.

On this page
Claim dispute and supplement letter
This letter is a starting template, not legal advice. Check it against your own policy, contract or claim before you send it. It is built in your browser; nothing you type is sent anywhere.
Your letter
Still to fill in: Your name, Your address, Insurance company, Adjuster or claims contact, Claim number, Policy number, Date of loss, Date of this letter, What is missing, wrong or denied, What you are enclosing.
What the letter does
A claim that goes wrong rarely goes wrong in one dramatic moment. More often an estimate leaves out a room, a payment is smaller than the repair bill, or a denial arrives with few reasons. The most useful response is a clear written request that names the claim, says exactly what you are asking for, lists what you are sending, and asks for a written reply. This generator drafts that letter.
The letter comes in versions, picked by one field. A supplement asks the insurer to add damage that was not in its estimate, usually because it was found later or missed at the first inspection. A review asks the insurer to look again at an amount you do not agree with. A denial request asks the company to explain in writing why a claim was denied in whole or in part and which provisions it relied on. Fields you leave empty show as bracketed prompts in the preview, so you can see what is missing before you copy it.
Why a written request
California's claims guide tells policyholders to keep a log of calls and to copy all correspondence, and lists what to do if you disagree with an offer: talk to the claims manager, contact the department of insurance, or consult an attorney. It also cautions policyholders to be wary of initial offers described as full settlements. Texas says a denial must be explained in writing, and that you can file a written complaint with the department of insurance. North Dakota suggests trying to resolve a disagreement with the company first, possibly with a supervising claims manager. All of those paths go better with a letter on file.
The letter does not threaten and does not cite law. That is deliberate. It states facts, asks for a reply, and leaves your options open. The last paragraph on the review version mentions that your policy may have an appraisal process and that you may ask your state department of insurance for help, without committing you to either.
Worked example: a missed bedroom
A homeowner receives an estimate that covers the living room and kitchen but not a bedroom whose ceiling stained after the same storm. She picks the supplement option, enters her claim number and the date of loss, and writes in the details box which room was left out, what the damage looks like, and that the photographs are enclosed. She lists the photographs and a contractor's written note in the enclosure box. The preview reads as a plain, polite request, and she sends it by a method that leaves a record, and keeps a copy with her call log.
Notice what she did not do: she did not guess at a dollar figure she cannot support, and she did not describe the adjuster's motives. Facts and attachments are what an insurer can act on.
Before you send it
Check it against your policy and your claim file, and fill in every bracketed prompt. Keep copies of everything. The letter is a template and not legal advice. When the disagreement is about the amount and talking has not worked, public adjuster, appraisal or attorney compares the next steps, and the claim documentation checklist lists what to attach. If a dispute involves a large sum or an accusation of bad faith, that is the point at which many people talk to an attorney, and the page on those options sets out what the public guides say about cost.
Sources
- Texas Department of Insurance, Home insurance guide tdi.texas.gov
- California Department of Insurance, Residential Property Claims Guide (April 2023) insurance.ca.gov
- North Dakota Insurance Department, How to submit a claim insurance.nd.gov
- NAIC, Navigating the claims process: recover and rebuild content.naic.org