Costa Mesa, CA Swimming Pools & Spas: Pool Permits (2026)
Swimming pool permit rules in Costa Mesa, CA, also covering above-ground pools, in-ground pools, and spa installations, set fencing, barrier, alarm, and inspection requirements.
Key Facts
- State Authority
- Cal. Health & Safety Code 115920-115929
- City Adoption
- CMMC Title 5 (Building Code)
- Permit Trigger
- Pool capable of holding >18 inches of water (HSC 115921)
- Required Features
- At least 2 of 7 approved (HSC 115922)
- Min Barrier Height
- 60 inches (HSC 115923)
- Gate Latch Height
- >=60 inches above ground
- Ground Clearance
- <=2 inches under barrier
- Confirm With
- Costa Mesa Building Division (714) 754-5273
Summary
Costa Mesa applies California's Swimming Pool Safety Act (Health & Safety Code 115920-115929) and the 2022 California Residential Code through CMMC Title 5. Any above-ground pool capable of holding more than 18 inches of water requires a building permit, an isolation barrier at least 60 inches tall, and at least two of seven approved drowning-prevention features.
“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. Public swimming pool does not include a swimming pool located on the grounds of a private single-family home. (c) “Enclosure” means a fence, wall, or other barrier that isolates a swimming pool from access to the home. (d) “ANSI/APSP performance standard” means a standard that is accredited by the American National Standards Institute (ANSI) and published by the Association of Pool and Spa Professionals (APSP).
Full Breakdown
Costa Mesa Municipal Code Title 5 adopts the California Building Standards Code, including the 2022 California Residential Code (with Appendix AX). Under HSC Section 115921, an above-ground pool deeper than 18 inches is a regulated swimming pool, and HSC Section 115922 requires at least two of seven drowning-prevention features when constructed or remodeled: an isolation enclosure that meets HSC 115923, removable mesh fencing meeting ASTM F2286, an ASTM F1346 safety cover, exit alarms on doors, a self-closing self-latching door device with release at least 54 inches up, an ASTM F2208 pool alarm, or another approved means. HSC 115923 sets the isolation barrier at a minimum 60 inches tall, no more than 2 inches above ground at the bottom, no openings that pass a 4-inch sphere, no climbable surfaces, and a self-closing gate that opens away from the pool with a latch at least 60 inches above grade. Confirm permit thresholds with the Costa Mesa Building Division.
Violations & Fines
Installing an above-ground pool over 18 inches deep without a permit, or failing the 60-inch barrier or two-of-seven feature requirements, fails inspection and can support a stop-work order or correction notice from Costa Mesa Code Enforcement.
Frequently Asked Questions
Do I need a permit for an above-ground pool in Costa Mesa?
How tall does the fence around my above-ground pool need to be?
What safety features does Costa Mesa require for a new pool?
Sources & Official References
Other rules in Costa Mesa
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How other cities in Orange County handle pool permits.