What a supplemental is
A supplemental claim adds scope to an existing claim: additional damage, additional cost, or missed scope. It's an addition, not a new claim. The original claim stays open (or can be reopened) and the supplemental is paid on top.
When to file
Hidden damage emerges during repairs
The contractor opens walls and finds moisture, structural damage, or hidden smoke residue. All typically recoverable as supplemental.
Code-upgrade costs identified
Post-loss inspection reveals code-required upgrades not captured in the initial estimate. Law-and-ordinance coverage pays the delta.
Matching statute applies
Discontinued tile, shingle, or siding product triggers Fla. Stat. 626.9744. Continuous-area replacement scope is typically supplemental.
ALE extends beyond initial estimate
The initial ALE estimate runs out but you're still displaced. Supplemental ALE covers the extension.
Additional contents damage identified
Often contents claims are filed in waves. Initial submission → carrier response → pack-out → additional loss discovered → supplemental.
Mold develops post-remediation
Mold emerges after initial mitigation completes. Recoverable as supplemental if the underlying water event was covered.
Statutory basis
Fla. Stat. 627.70132 sets the 18-month window. The clock runs from date of loss, not from claim closure. Supplemental filings after 18 months are generally barred.
What to include
- Reference to original claim number
- Description of the supplemental scope (what's new)
- Revised Xactimate estimate reflecting the addition
- Supporting documentation (photos, expert reports, contractor invoices)
- Policy-citation basis for coverage
- Specific demand amount
Common mistakes
- Waiting too long. Time-barred after 18 months
- Broad release signed. If you signed a full release, supplemental rights may be foreclosed
- Lack of documentation. Same scope-documentation standards apply as original claim
- Filing as "new claim." Supplemental is an addition, not a new claim: filing as new can reset statutory clocks unfavorably
How carriers respond
Carriers must evaluate supplementals in good faith. Common responses:
- Acceptance and additional payment
- Request for more documentation
- Partial acceptance
- Denial (with specific basis)
Each response has its own playbook.