Supplemental claims: when the scope missed something

What a supplement is (and isn’t)

A supplement is an addition to an open claim’s scope: damage or costs discovered after the initial estimate. It is not a new claim, not a re-opening fight, and not an accusation that anyone did their job badly, initial scopes are written from what’s visible, and water damage is famously not. Adjusters process supplements every week; carriers budget for them.

Legitimate supplement triggers

• Demolition reveals saturation or mold beyond the mapped footprint
• Code upgrades required during repair (electrical, venting) that the original scope couldn’t know
• Matching issues: the discontinued flooring means a larger replacement area than the wet spot
• Hidden assemblies, subfloor layers, double drywall, insulation types, that change drying or rebuild line items
• Price reality: a scoped material or trade isn’t available at the estimate’s number

How to file one that gets approved

Photograph the discovery before work continues, a supplement without “as-found” photos is a request; with them it’s a record. Submit in the same Xactimate format as the original scope, tied to the claim number, with a line-item explanation of why each addition couldn’t have been known initially. On our jobs this is automatic: discoveries pause work at the affected assembly, get shot and logged, and the supplement goes out with the adjuster’s name already on it, usually approved without a second site visit.

Recoverable depreciation, the supplement’s cousin

Many payments arrive split: actual cash value now, “recoverable depreciation” when repairs complete. That held-back money is yours upon proof of completion, invoices and photos. Don’t leave it unclaimed; carriers don’t chase you to pay it. Full payment mechanics are in the claims guide.