Swimming Pools & Spas in Mesa, AZ

If you live in Mesa or are thinking about moving there, swimming pools & spas are one of those things you probably won't think about until they affect you directly. Mesa has 2 specific rules on the books covering different aspects of swimming pools & spas, and some of them might surprise you.

Pool Permits

Building or installing a residential swimming pool in Mesa requires a building permit under § 4-1-4(A) before any digging or construction starts, unless the pool is a prefabricated above-ground unit 18 inches or shallower holding 5,000 gallons or less. Pools are also regulated by the 2024 International Swimming Pool and Spa Code, adopted as the Mesa Swimming Pool and Spa Code.

Key details: Permit required before: construction/alteration of a pool. Above-ground exemption: 18 in deep or less, 5,000 gal max. Adopted construction code: 2024 Intl. Swimming Pool & Spa Code. Min. setback from lot line: 4 ft (water's edge). Max penalty: $2,500 fine / 6 months jail.

Building without the required pool permit is a Title 4 violation under § 4-1-9. The Building Safety Director can issue a notice of violation ordering the work stopped and the violation abated; failing to comply exposes the owner to prosecution as a class one misdemeanor, punishable by up to $2,500 in fines, up to 6 months in jail, or both, with each day of continued violation a separate offense.

Fencing & Safety Requirements

Mesa requires all residential pools and spas to have barriers at least 5 feet high per the adopted building code and ARS 36-1681. Gates must be self-closing and self-latching with no openings larger than 4 inches.

Key details: Minimum Height: 5 feet. Max Opening Size: 4-inch sphere test. Ground Clearance: 2 inches maximum. Water Setback: 20 inches from edge.

Pool barrier violations are serious safety issues enforced by Mesa building inspectors. Non-compliant barriers must be corrected immediately. Failure to comply can result in fines and a stop-work order on the pool.

This is one of the stricter rules in Mesa's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.

The Bottom Line

Mesa's swimming pools & spas rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Mesa is broadly strict or permissive.

These rules come from Mesa's publicly available municipal code. For complete penalty schedules, exemption details, and answers to common questions, see the individual ordinance pages throughout this guide.