Palo Alto, CA Swimming Pools & Spas: Pool Permits (2026)
Swimming pool permit rules in Palo Alto, CA, also covering above-ground pools, in-ground pools, and spa installations, set fencing, barrier, alarm, and inspection requirements.
Key Facts
- Permit trigger
- Over 18 inches
- Wall height
- Not a substitute for 60 inch barrier
- Ladder
- Lockable when not in use
- Setbacks
- Zoning applies
- Inflatable under 18 inches
- Exempt
Summary
Above-ground pools deeper than 18 inches require a Palo Alto building permit and must meet the same safety-barrier requirements as in-ground pools.
115921. As used in this article, the following terms have the following meanings: (a) "Swimming pool" or "pool" means any structure intended for swimming or recreational bathing that contains water over 18 inches deep. "Swimming pool" includes in-ground and aboveground structures and includes, but is not limited to, hot tubs, spas, portable spas, and nonportable wading pools. (b) "Public swimming pool" means a swimming pool operated for the use of the general public with or without charge, or for the use of the members and guests of a private club. (c) "Enclosure" means a fence, wall, or other barrier that isolates a swimming pool from access to the home.
Full Breakdown
Palo Alto treats above-ground pools the same as in-ground pools for permitting and safety purposes once the water depth exceeds 18 inches. A building permit is required for installation, including review of the pool wall structure, the deck or ladder, electrical for the filter pump, and the required safety barrier under Health and Safety Code 115922. A 48 or 52 inch pool wall alone generally does not satisfy the 60 inch barrier requirement unless paired with a locking, removable ladder and other approved features that together meet the two-feature rule. Setbacks to property lines, overhead wires, and septic systems must also be met. Temporary inflatable pools that hold less than 18 inches of water are exempt from permits but should still be drained and stored when not in use. Contact Palo Alto Building at 650-329-2100 before purchasing.
Frequently Asked Questions
Is my Intex pool legal without a permit?
Does the pool wall count as the fence?
Sources & Official References
Other rules in Palo Alto
California rules heatmap·Compare Palo Alto to another location·View the California swimming pools & spas overview
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Pool Permits in Nearby Cities
How other cities in Santa Clara County handle pool permits.