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

2 of the California Fire Code entirely and replaces it with local requirements. 21) demand something stricter, that stricter rule controls. Existing buildings, other than one- and two-family dwellings, must be retrofitted with sprinklers if they exceed 3,600 square feet and undergo a change of use, remove an existing fire wall, or add 50% or more to the original building area where the resulting total exceeds 5,000 square feet. One- and two-family dwellings must have sprinklers regardless of square footage under the California Residential Code, and mobile homes, manufactured homes, and two-unit multifamily manufactured homes must be sprinklered per Title 25 of the California Code of Regulations.

The section carves out narrow exceptions for telecommunications equipment spaces with smoke detection and fire-rated separation, detached agricultural buildings, open-sided equestrian arena canopies, non-combustible fueling canopies under 10,000 square feet set back 50 feet from other buildings, and open shade structures over playgrounds or vehicle storage, plus a Fire Chief exemption where no major life-safety hazard exists. 3. 3, caps hydraulically calculated sprinkler system design at 90% of available water supply capacity.