Ventura, CA Swimming Pools & Spas: Hot Tub Rules (2026)

California treats spas and hot tubs as 'pools' once water depth exceeds 18 inches (HSC §115921(a)). The CBC §3109.4.4.2 spa exception — adopted in BS 316 — provides that 'spas or hot tubs with a safety cover which complies with ASTM F 1346 shall be exempted' from the standard barrier requirements; the City's site-plan note 5 reinforces that spas may use approved locking safety covers in lieu of a perimeter fence. Despite the barrier exemption, the unit must still meet: (1) Building & Safety permit issuance with electrical, gas, and plumbing trade permits as applicable; (2) SB 442 dual-feature rule at permit issuance if it qualifies as a pool/spa under §115921 and the permit is on/after 1/1/2018 — an ASTM F1346 cover counts as one feature; common second-feature pairings are exit alarms on dwelling doors, self-closing dwelling doors with high latches, or an enclosure; (3) CEC Article 680 electrical bonding and GFCI protection of the spa, equipment, and surrounding deck; (4) entrapment-protected suction outlets per ANSI/APSP-16 (CBC §3109.4.4.8); (5) for gas-heated spas, the heater must be sited so combustion air is unobstructed and at the City-required distance from openable windows of dwellings (BS 519 callout F requires the heater-to-window distance to be shown on the site plan). Zoning setbacks for accessory equipment, side/rear-yard requirements, and noise (SBMC Ch. 10.650) apply — pump and heater operation must conform to Ventura's noise zones. Spas installed indoors must comply with CBC §3109.4.1.8 wall provisions. Removable mesh fencing (ASTM F2286) and exit-door alarms (UL 2017, deactivation switch ≥54 in above threshold) remain available as alternative SB 442 features. Coastal-zone spa installations may have additional Coastal Commission notification requirements where view corridors or bluff setbacks are affected.