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Resources · October 23, 2026

What to gather before you send a demand letter

A demand is a short letter with a number and the papers behind it. These are the papers. This is not advice about whether you should send one.

A demand letter is a request that an insurer pay a stated amount, with the documents attached. It is not a lawsuit, and a letter from an appraisal firm is not a letter from a lawyer. The useful ones are specific. The weak ones are a percentage with no vehicle and no invoice.

The papers

You want the VIN, the mileage at the time of the loss, the date and state of the crash, the claim number, and the insurer's name. You want the final repair invoice, not the first estimate, with a total a reader can find. Photographs of the damage help a reviewer see whether the invoice's 'moderate' is actually a buckled rail. They are not a substitute for the invoice.

If you were in a rental car, the days and the daily rate are a separate loss-of-use question. Do not fold that rent into the diminished value number and hope nobody notices. Say which dollars are which.

Keep a copy of anything you send. If the shop's portal will close, download the invoice now. Statutes of limitations are measured in years. Shop software is not.

What the letter should say

Identify the claim, the vehicle, and the date. State the repair total. State the amount you are asking for diminished value and, in a sentence, how it was built: which value, which mileage, which damage class. If you also show a 17c figure, say that it is a cross-check and not the demand. Ask the insurer for their number in writing, including the guide, the edition or date, the mileage, the condition, and the ZIP.

A request that they reply within 30 days is a request. It is not, by itself, a statutory deadline. Unfair-claims rules differ, and putting the wrong statute in a letter is worse than leaving it out.

Do not write that a guidebook endorses the letter. Do not write that a formula is 'the law' unless a court or a statute actually made it so for your claim. Georgia's 17c history is a real history. It is not a national rule.

A name at the bottom

A bare printout is easy to set aside. A letter that names an appraiser is easier to answer, and only if the credentials on the page are real. A blank certification line should stay blank until the number exists. Sending a letter that invents a license is not a documentation strategy.

If the insurer's offer is lower, the next paper is a comparison, not a new theory: their guide against yours, their mileage against the odometer, their condition against the invoice. That second letter can be short.

This article is general information. It is not legal advice and not a comment on a particular policy.

Alden is not a law firm. Nothing on this site or in a report is legal advice, a coverage opinion, or a statement that an insurer must pay.