Walnut Creek, CA Swimming Pools & Spas: Fencing Requirements (2026)

Swimming pool barrier requirements in Walnut Creek are driven almost entirely by California state law — specifically the Swimming Pool Safety Act, Health & Safety Code §115920 through §115929 — as adopted and enforced through the city's Building Division (California Building Code, California Residential Code, and California Plumbing Code adoption). Every new or substantially remodeled pool, spa, or hot tub must be surrounded by an enclosure at least 60 inches (5 feet) tall as measured from the outside. The barrier must have no openings larger than 4 inches, no horizontal members or decorative features within 45 inches of the ground that could serve as footholds, and must be at least 20 inches from the water's edge. Gates must open outward away from the pool, be self-closing and self-latching, with the latch mechanism at least 60 inches above the ground (or 54 inches in certain interior configurations). For pools constructed or remodeled after January 1, 2007, HSC §115922 requires at least two approved safety features from a seven-item list: an enclosure meeting the above standard; removable mesh fencing with self-closing latching gate; an approved safety pool cover; pool exit alarms on doors providing direct access; self-closing/self-latching devices on doors with a release mechanism 54 inches above the floor; an alarm meeting ASTM F2208 that sounds on unauthorized entry into the water; or other approved means providing equal protection. Single-family home sales with pools require a disclosure of pool safety features. Plans for new pools must be reviewed by Walnut Creek Building and Contra Costa County Environmental Health where applicable.