7 county-level rules, plus city-specific rules for 4 cities in Pima County, Arizona.
Verified from official government sources
Pima County limits front yard fences to 3 ft (solid) or 4 ft (open). Side and rear fences up to 6 ft. Hillside development zones have stricter height and material rules.
Block walls and masonry fences typically require building permits in Pima County. Wood fences under 6 feet may be exempt. Pool barriers must meet ARS §36-1681.
Pima County has no neighbor fence cost-sharing ordinance. Arizona law does not require neighbors to split fence costs. Owners may build on their own property up to zoning limits.
Building permits required for retaining walls over 4 ft in Pima County. Licensed engineer must design walls exceeding 4 ft. Hillside zones require terracing and natural colors.
ARS 36-1681 requires 5-ft pool barriers with self-closing, self-latching gates in Pima County. Applies to all pools 18+ inches deep. Door alarms or safety covers as alternatives.
A.R.S. § 36-1681 — Pool enclosures; requirements
A. A swimming pool, or other contained body of water that contains water eighteen inches or more in depth at any point and that is wider than eight feet at any point and is intended for swimming, shall be protected by an enclosure surrounding the pool area, as provided in this section. B. A swimming pool or other contained body of water required to be enclosed by subsection A whether a belowgro...
Pima County Zoning Code Chapter 18.67 regulates fences and walls in unincorporated areas. Front-yard walls max 3 feet in residential zones. Side/rear walls max 6 feet without a permit. Pima County Development Services issues fence permits for walls exceeding standard heights.
A.R.S. § 36-1681 — Pool enclosures; requirements
A. A swimming pool, or other contained body of water that contains water eighteen inches or more in depth at any point and that is wider than eight feet at any point and is intended for swimming, shall be protected by an enclosure surrounding the pool area, as provided in this section. B. A swimming pool or other contained body of water required to be enclosed by subsection A whether a belowgro...
Pima County regulates fence materials by zone. Block/stucco walls are the Arizona standard. HOAs commonly mandate specific materials and colors.
4 cities in Pima County have their own fence regulations rules. Each link goes to that city's dedicated page with code citations.
See every category we cover for Pima County — parking, noise, fences, fires, animals, pools, and more.
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