Redding, CA Building Safety: Fire Sprinkler Requirements (2026)

2 of the 2022 California Fire Code with two residential triggers not found in the base code. First, any addition to an existing Group R-3 (single-family/duplex) building that increases the existing floor area by 50 percent or more must meet the sprinkler requirements applied to new construction, tied to the citywide 2,000-gpm fire-flow threshold in Appendix B. Second, and separately, any addition of any size to a Group R occupancy that already carries an approved automatic sprinkler system must have that system extended into the new space, closing off the option of building an unsprinklered addition onto an already-protected home.

The same section, at subsection E, extends a 50 percent rule to remodels: if a project demolishes, removes, or repairs more than 50 percent of a home's exterior bearing walls, more than 50 percent of the roof structure, or more than 50 percent of a commercial tenant improvement down to the shell, the building must meet new-construction sprinkler standards. 200 revises NFPA 13D and 13R so bathrooms of any size must carry sprinkler coverage, stricter than the unamended national model codes. 140(A) with an exterior access door large enough to remove the largest piece of equipment, plus exterior signage identifying the room.

These provisions were added by Ordinance No. 20. The Fire Prevention Division of the Redding Fire Department reviews building permits for triggering additions and remodels before issuing approval.