7 rules for unincorporated Pinal County, Arizona.
Verified from official government sources
In unincorporated Pinal County, front-yard fences are limited to open fencing of five feet or less; side and rear-yard fences may be six feet. Fences over seven feet, or over 24 inches within a corner-lot sight triangle, are restricted.
Pinal County Development Services Code (fence height, front yard)
Open fencing of five feet or less in height or fencing of five feet or less in height where the portion of fence over three feet is open fencing or fencing of six feet in height consisting of pipe rail or wrought iron. Gates may be no higher than eight feet.
In unincorporated Pinal County, fences and wall-type fences six feet or less in side/rear setbacks do not require a permit. A building permit is required for walls or fences over seven feet, and retaining walls over four feet.
Pinal County Development Services Code (permit thresholds, walls/fences)
A building permit is required for Walls or fences over 7 feet in height measured from the outside and retaining walls over 4 feet in height measured from the bottom of the footing.
Pinal County's zoning code sets fence height and permit rules but does not assign cost-sharing between neighbors. A shared boundary fence and its costs are a private civil matter under Arizona law; the county does not mediate.
In unincorporated Pinal County, retaining walls over four feet in height measured from the bottom of the footing require a building permit and plans prepared by an Arizona Registered Engineer. Walls four feet or less are generally exempt.
Pinal County Development Services Code (retaining walls)
retaining walls over 4 feet in height measured from the bottom of the footing will require plans prepared by an Arizona Registered Engineer
Pinal County requires fences to keep corner-lot sight visibility clear: fences over 24 inches are not permitted within the sight visibility triangle, and no fence, structure, sign or planting may block traffic visibility across the corner.
Pinal County Development Services Code (corner sight visibility)
no fence, structure, sign or planting shall be erected or maintained within 20 feet of the property corner so as to interfere with traffic visibility across the corner
Pinal County's front-yard fence standards effectively restrict solid materials: only open fencing up to five feet, or six-foot pipe-rail/wrought-iron, is allowed in the front yard. The county sets no countywide barbed-wire ban in rural zones; check your zoning district.
Pinal County permits standard fence materials—wood, block, wrought iron, pipe rail—subject to the front-yard open-fencing rule (open fencing to five feet, or six-foot pipe-rail/wrought-iron). Side and rear yards allow solid fencing up to six feet.
Pinal County Development Services Code (side/rear fences)
Fences or wall type fences of six feet or less in height that are being used as fences in side and rear setbacks do not require a permit with the county.
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