Maricopa County, AZ Fence Regulations: Fence Permit Requirements (2026)
Key Facts
- Permit trigger height
- Fences/walls over 6 feet
- Retaining wall trigger
- Over 18 inches in height
- Also requires permit
- Pool barriers, hillside lots, corrals
- Exempt fencing
- Wire-strand/pipe-rail, no mesh
- Enforcing agency
- Planning and Development Department
Summary
In unincorporated Maricopa County, a building permit is required for fences or walls over six feet tall, retaining walls over 18 inches, pool barriers, hillside-lot fences, corrals in residential zones, and corner-lot walls abutting a key lot.
9. A building permit is required for walls/fences over 6' in height, retaining walls over 18" in height, pool barriers, walls/fences on hillside lots, corrals in residential zoning districts, fences to establish a primary use or a wall on a corner lot abutting a key lot.
Full Breakdown
Maricopa County's Planning and Development Department requires a building permit before erecting or altering fences and walls over six feet tall, retaining walls over 18 inches, pool barrier fences, fences on hillside lots, corrals in residential zoning, fences used to establish a primary use, or a wall on a corner lot abutting a key lot. A separate drainage clearance permit applies to any fence or wall that alters historic surface-water flow, no matter its height. Plain wire-strand or pipe-rail fencing without mesh or screening is exempt from permitting unless it sits in a floodplain or establishes a principal use. Concertina wire, razor wire, and fence electrification are barred below eight feet.
Violations & Fines
Building a permit-required fence or wall without one is unlawful under MCZO Article 1202.1; violators face a class 2 misdemeanor, with each day of the illegal structure a separate offense, plus civil penalties under A.R.S. § 11-808.
Frequently Asked Questions
Do I need a permit for a 5-foot backyard fence in unincorporated Maricopa County?
Is chain-link fencing exempt from the permit requirement?
Sources & Official References
Other rules in Maricopa County
Compare Maricopa County to another location·View the Arizona fence regulations overview
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