Rohnert Park, CA Building Safety: Fire Sprinkler Requirements (2026)

2 to require an approved automatic sprinkler system in all newly constructed buildings and structures in Rohnert Park, subject to six exceptions: detached Group U buildings of 1,000 square feet or less, detached pool houses up to 1,000 square feet within 50 feet of the pool with a single bathroom, detached non-combustible fuel dispensing canopies, non-combustible carports with no habitable space above, detached Group B or M buildings of 500 square feet or less, and accessory dwelling units specifically exempted by an OSFM Information Bulletin.

23 to extend the sprinkler mandate to existing buildings undergoing significant work. An existing one- or two-family dwelling must add sprinklers when an addition increases its gross floor area by 50% or more; an existing nonresidential building must add them when an addition increases floor area by 25% or more; and additions to Group R Division 1 buildings that create new guest rooms or dwelling units must meet full new-construction sprinkler standards. A remodel, alteration or repair that demolishes or repairs more than 50% of a structure's load-bearing walls, framing or foundation also triggers full compliance, and the work is cumulative: successive remodels within a three-year period are added together, and once they total 50% or more the building must be sprinklered. Alterations made solely to comply with the Americans with Disabilities Act are exempted from triggering the requirement.