Vista, CA Fire Regulations: Smoke Detectors (2026)

020, including a new Section 324 that governs mid-rise construction. The Fire Code defines a 'mid-rise building' as a structure four stories or taller but not exceeding 75 feet, measured from the underside of the topmost occupied floor or roof to the lowest fire apparatus access road, and not already classified as a high-rise under California Building Code Section 202. 2's smoke detection mandate: detectors tied into an automatic fire alarm system, installed to NFPA 72 standards referenced in CFC Chapter 80. Triggering any required detector must activate the building's emergency voice alarm system and shut down air-handling equipment to stop smoke from recirculating through return and exhaust ductwork.

The ordinance lists four required detector locations: mechanical, electrical, transformer, telephone and elevator equipment rooms and elevator lobbies; the main return/exhaust air plenum of each air conditioning system; connections to vertical ducts or risers serving two or more stories; and, for Group R-1 and R-2 occupancies, every corridor serving as a means of egress for ten or more occupants. 010 without a local amendment on that topic.