Alameda County, CA Swimming Pools & Spas: Fencing & Safety Requirements (2026)

California state law preempts local pool barrier rules and applies countywide. Per HSC §115923, a permanent pool enclosure must be a minimum of 60 inches high, with no more than 2 inches of vertical clearance between the bottom of the barrier and the ground, and any gaps must not pass a 4-inch sphere. Latches must be located at least 60 inches above ground, and the outside surface must be free of handholds. Per HSC §115922, when a building permit is issued for a new pool, spa, or pool remodel, the pool must be equipped with at least two of seven approved drowning prevention safety features: (1) a compliant enclosure, (2) removable mesh fencing meeting ASTM F2286 with self-closing/self-latching gate, (3) an ASTM F1346 approved safety cover, (4) exit alarms on house doors providing direct pool access, (5) self-closing/self-latching devices on doors with release at least 54 inches above the floor, (6) a pool alarm meeting ASTM F2208, or (7) other equivalent protection independently verified. 08 adopts the California Building Code, including CBC §3109). Approved devices must remain functional after installation.