Roof 25% Rule Checker

FBC 706.1.1 / 1511.1.1, as modified by Senate Bill 4-D (2022).

Reference only, not a permitting determination. Local building officials make the final call on individual jobs. This reflects the statewide rule as changed by SB 4-D — always confirm with the local building department for the specific property.

Roof Details

Was the existing roof section built, repaired, or replaced in compliance with the 2007 FBC or a later edition? (i.e. permitted on or after March 1, 2009)

If unsure, this treats the roof conservatively as pre-2009.

% of Roof Area Being Repaired, Replaced, or Recovered (in the current 12-month period)

Full Roof Compliance Trigger

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