If the house forms one side of the pool enclosure, what are the options?
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A.R.S. 36-1681(C) gives four alternatives and you have to show one of them on the plan. An interior barrier at least 48 inches high, a motorized safety cover on a key switch, self-latching devices on the doors with the release at least 54 inches up, or, for an aboveground pool, non-climbable sides at least 48 inches with a removable ladder.
Most residential lots in Southern Arizona put the house on one side of the pool area, which means the wall of the residence becomes part of the enclosure. A.R.S. 36-1681(C) covers that case, and it is the subsection most often referenced in one sentence and never actually read.
There are four paths. One of them has to appear on the plan.
PATH 1, an interior barrier. A barrier between the residence and the pool, at least 48 inches high, meeting the same opening rules as the perimeter barrier: no opening passing a 4 inch sphere, horizontal members not less than 45 inches apart, and no exterior handholds or footholds. Note the height. It is 48 inches here, not the 60 inches the perimeter barrier takes, because this barrier sits inside an already-enclosed yard.
PATH 2, a motorized safety cover. A powered cover operated by a key switch, meeting ASTM F1346. Local acceptance varies and it is worth confirming with the authority before a design depends on it. Pima County and Santa Cruz County both accept an F1346 cover; most of the other authorities in the region have not been confirmed either way.
PATH 3, self-latching doors and controlled windows. Self-latching devices on every door with direct access to the pool area, with the release not less than 54 inches above the floor or threshold, plus control of the openable windows on that side. This is the path most houses end up on, and it is the one most often installed wrong, because a self-CLOSING device and a self-LATCHING device are different hardware and the statute names the latch.
PATH 4, aboveground pool. Non-climbable exterior sides at least 48 inches high with a removable or lockable ladder. Only available where the pool structure itself is the barrier.
WHAT THIS DOES NOT DO, and it is the most common misreading. None of the four replaces the perimeter barrier around the property. Subsection (C) governs the residence side of the enclosure only. A homeowner told that a pool cover means no fence is needed has been told something that is not true anywhere in the region.
Santa Cruz County spells its own version of this out in Zoning and Development Code Section 1600(C), and adds a requirement the statute does not: emergency escape and rescue windows from sleeping rooms latched not less than 54 inches above the floor, and all other openable windows with similar access needing a screwed-in-place wire mesh screen, a keyed lock limiting the opening to 4 inches, or a latch not less than 45 inches above the floor. It also states expressly that the wall of a house with openings to the water will NOT be considered as meeting the section.
Correction. Summaries that reference subsection (C) without enumerating the four paths, and the common claim that a safety cover under (C)(2) removes the perimeter barrier.
Authority: A.R.S. 36-1681(C)(1) through (C)(4); Santa Cruz County Zoning and Development Code Sec. 1600(C); ASTM F1346. Verified 2026-09-10. Primary source. Evidence grade: MEASURED. Read directly from an authoritative geographic or recorded source.