All fencing over 1 foot in height requires review in unincorporated Maricopa County. Simple fences need a zoning clearance (A-fence). Pool barriers, fences over 8 feet, hillside fences, and retaining wall-fences need full building and zoning clearances (B-fence).
Maricopa County requires some level of review for all fences over 1 foot in height. The county classifies fences into two categories: A-fence (zoning clearance only) for standard residential fences up to 6 feet on developed residential parcels, and B-fence (building and zoning clearances required) for: fences on vacant property, pool barrier fences, fences exceeding 8 feet in height, fences on hillside properties, and retaining walls that serve as fences. The zoning clearance process verifies compliance with setbacks, height limits, and zoning district requirements. B-fence applications require additional structural review and engineering calculations for tall fences or retaining walls. Pool barrier fences must meet the International Building Code pool safety standards adopted by the county (minimum 5 feet, self-closing gates). The permit application requires a site plan showing the proposed fence location relative to property lines.
Fences built without proper clearances or permits may result in violation notices, required removal, and denial of future permits. Non-compliant pool barriers are treated as safety emergencies.
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See how Maricopa County's fence permits rules stack up against other locations.
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