Pool barrier and alarm rules in Scottsdale and nearby towns

A pool barrier decides where the fence runs, which house doors need alarms, how the gate swings, and whether the view toward the desert stays open. In Scottsdale, the city won't approve a pool plan until it approves the fence or wall plan, so the barrier gets designed first.

Three layers of rules

Three sets of rules can apply to one backyard:

1. Arizona's state law, A.R.S. §36-1681, sets a default barrier standard.
2. The city or town code applies where the local rule is at least as strict as the state's. Scottsdale, Fountain Hills, Cave Creek, Carefree, and Maricopa County each have their own.
3. HOA design rules may control the fence material, color, and height on top of the code.

Arizona's default: A.R.S. §36-1681

The state law covers any pool with water 18 in. or deeper at any point and wider than 8 ft at any point, above or below ground. It requires a wall, fence, or barrier at least 5 ft high, measured on the outside. Gates must open outward, close and latch on their own, and have the latch at least 54 in. high.

The statute exempts a pool covered by a city or county ordinance that is at least as stringent. It also exempts "a residence in which all residents are at least six years of age." That second exemption doesn't carry into Scottsdale. The city says "there are no exemptions for households without children."

The City of Scottsdale's rules

Scottsdale applies the 2021 International Swimming Pool and Spa Code with local amendments, adopted into Chapter 31, Article XIII of the city code. The city's amendments add several rules that matter to a homeowner.

The barrier itself

• Height. The barrier top must be at least 60 in. above grade, measured on the side away from the pool. That measurement applies along the full perimeter and for 3 ft outside it (§305.2.1).
• Climbability. Solid barriers can't have handholds or footholds (§305.2.3).
• Gates. Perimeter gates must close and latch on their own, with the latch at least 54 in. high.
• Spas. Every hot tub and spa needs an approved barrier or, under §305.1, a lockable safety cover listed to ASTM F1346. Confirm with the city which it will accept.
• Permit. A new fence needs its own fence permit.

When the house is part of the barrier

Some backyards use the back wall of the house as one side of the pool enclosure. When that happens, §305.4 requires one of several protections: a UL 2017 entrance alarm on each door, gate, and operable window with a sill under 48 in. (built to the city's specs below), an ASTM F1346 safety cover on the pool, or another approved means such as self-closing, self-latching doors. The alarm must:

• be listed to UL 2017 as a water-hazard entrance alarm
• sound within 7 seconds of the door opening
• keep sounding for at least 30 seconds
• reach at least 85 dBA at 10 ft
• reset on its own
• have a deactivation touchpad at least 54 in. off the floor that silences it for no more than 15 seconds

Count the doors and low windows on the pool side early. A house with sliding glass walls across the back can need several alarms. Other options are a separate fence between the house and the pool, a listed ASTM F1346 safety cover, or another means the city approves (§305.4).

During construction

From the start of excavation until the permanent barrier is complete, construction fencing at least 60 in. high must surround the site of an in-ground pool (§305.1.1). Before building a new pool, spa, or hot tub, the pool contractor must give the owner written notice of the barrier requirements (§305.1.2).

After the pool is finished

The owner must keep barriers, gates, doors, locks, alarms, and latches in safe working order (§305.1.3). A barrier not kept to the code it was built under is declared a public nuisance (§305.1.4).

A seller or landlord of a home with access to a pool or spa must give the buyer or renter written notice about pool safety (§101.5).

Older pools

The city's current barrier rules apply to single-family pools, spas, and hot tubs built after July 20, 1995. Pools built before July 15, 1992 need only the 54 in. perimeter fence and gate rules in effect at that time. If your pool predates those dates, ask the city which rules apply before you change the fence.

Nearby towns

Fountain Hills adopted the 2024 pool and spa code, effective September 1, 2025. Its amendments set a 60 in. minimum barrier measured on the side away from the pool, for the full perimeter and 3 ft out. They limit gaps between vertical members to 1-3/4 in. where horizontal members sit less than 54 in. apart, and they delete Section 303.1.3, the energy-code requirement for a vapor-retardant cover on heated outdoor pools.

Cave Creek requires a barrier at least 60 in. high, with no opening that passes a 4 in. sphere, kept at least 20 in. from the water's edge. Pedestrian gates must self-close and self-latch. The permit packet asks for the full barrier on the plans, even if the barrier gets its own permit.

Carefree requires a barrier permit applied for before the pool permit is approved. The barrier must meet Town Code Article 5-3 and Zoning Ordinance §9.09. Where it encroaches into a setback, it can be no taller than 5 ft, measured outside.

Unincorporated Maricopa County requires a barrier top at least 60 in. above finished grade, latches at 54 in. or higher, and gates that self-close, self-latch, and open away from the pool. The barrier permit must issue before the barrier goes up, the pool is plastered, or it is filled.

Paradise Valley runs its own Building Department. Ask it for the town's current pool enclosure requirements before the fence is designed.

Design questions to settle early

• Will the house wall form part of the barrier? If so, how many doors and low windows need alarms?
• Does a view fence on the desert side meet the 60 in. height and climbability rules?
• Which way do the gates swing, and where do the latches sit?
• Does the HOA limit fence material, color, or height?
• Where does the construction fence go, and how will the crew get equipment in?

For the payment rules that come with a pool contract, see the Arizona pool contract guide. For the rest of the permit process, see how a new pool project runs.