Property policies commonly require a sworn proof of loss after a claim. It is a formal legal document rather than a claim form, and treating it casually creates problems that are difficult to undo.
What the document contains
A proof of loss states the time and origin of the loss, the interest of the insured and others in the property, the condition of the property and the amount claimed. Supporting schedules are usually attached.
It is signed under oath and notarized. The oath is what distinguishes it from correspondence with an adjuster.
Because it is sworn, inaccuracies expose the claimant to allegations of misrepresentation. Estimating figures loosely is the most common error.
Why insurers require it
The document fixes the claim. It establishes what is being asserted, in what amount, on a date certain.
That serves an evidentiary function if the claim is later disputed, and it deters inflated claims by attaching consequences to the numbers. Fraud provisions in the policy are anchored to it.
It also starts procedural clocks. Payment obligations and suit limitation periods are often measured from the proof of loss in policy language and in state statutes.
The deadline is contractual
Policies typically require the proof of loss within a stated number of days after the insurer requests it. That period is short relative to the time a full repair estimate takes to assemble.
Insurers frequently grant extensions when asked in writing before the deadline. Verbal assurances from an adjuster are weaker than a written extension.
Failure to submit on time can be raised as a defense to the claim, though states differ on whether the insurer must show prejudice from the delay. That question has been litigated repeatedly.
How to complete it when the loss is still being measured
Claimants often face a deadline before the full extent of damage is known. Submitting a partial figure without qualification can be treated as the complete claim.
The usual approach is to state the amount known to date and to reserve the right to amend as further damage is identified. Amended proofs of loss are routine.
Attaching estimates, photographs, inventories and receipts turns the sworn figure into a supported one. An unsupported number invites challenge.
Where the risk sits
Policies contain concealment and fraud provisions that can void coverage where a material misstatement is made intentionally. A sworn document is the natural place for that provision to be applied.
Signing a form prepared by someone else without verifying it carries the same exposure. The oath is the claimant's own.
Requirements, deadlines and the consequences of late filing vary by state and change over time. An attorney or the state insurance department is the right resource where a proof of loss is contested.