Buried in most property insurance policies, including the widely used ISO HO-3 homeowners form, is a provision that most policyholders never read until they need it: the appraisal clause. It gives either side, you or the insurance company, the right to force a formal, structured process for resolving a disagreement over how much a covered loss is worth. It does not decide whether something is covered. It decides what a covered loss is worth in dollars.
What the appraisal clause actually is
The appraisal clause is a standard provision built into most property policies as a contractual alternative to a lawsuit over valuation. When you and the insurer cannot agree on the dollar amount of a covered loss, either side can invoke the clause and demand appraisal. It exists because insurers and policyholders disagree on numbers constantly, roof square footage, depreciation, the cost of matching materials, the extent of hidden water damage, and building a formal process into the policy itself avoids sending every dollar dispute to court.