Compact Book of Adjusting Property Claims - Fourth Edition: A Primer for the First Party Property Ad

Standard first party property insurance policies, based upon the more than a century old New York Standard Fire Insurance policy, contain conditions that require the insured to, within sixty days of the loss, submit a sworn proof of loss to prove to the insurer the facts and amount of loss.

In general, failure to file the proof within the time limited by the policy is fatal to an action upon it (White v. Home Mutual Ins. Co., 128 Cal. 131, 60 P. 666 (1900); Beasley v. Pacific Indem. Co., 200 Cal.App.2d 207, 19 Cal.Rptr. 299 (Cal. App. 1962).
The California Supreme Court in 1900, when it decided White v. Home Mutual concluded that the requirement of proof of loss by the insured within the 60-day limit provided by the standard form of policy is a condition precedent to the right of the insured to maintain suit.