Accessory Structures in Pinal County, AZ (2026)
2 rules for unincorporated Pinal County, Arizona.
Verified from official government sources
ADU Rules
Unincorporated Pinal County allows one attached and one detached ADU on lots under an acre, plus a second detached unit on lots an acre or larger. Community Development caps the size at 75 percent of the main house's floor area, up to 1,000 or 1,500 square feet depending on lot size, under Development Services Code 2.150.240.
Accessory Dwelling Unit Rules in Pinal County
Some RestrictionsPinal County Development Services Code § 2.150.240
"Accessory dwelling unit" or "ADU" means a self-contained living unit that is on the same lot or parcel as a single-family dwelling of greater square footage than the accessory dwelling unit, that includes its own sleeping and sanitation facilities and that may include its own kitchen facilities. ... One attached and one detached ADU as a permitted use for a lot or parcel that is less than one ...
Shed & Carport Rules
In the GR General Rural zone, a detached shed or accessory building can cover no more than one-third of your rear and side yards, tops out at 20 feet, and must sit at least seven feet from the main house and four feet from side or rear lot lines, per Pinal County Development Services Code 2.40.030.
Accessory Building Rules in Unincorporated Pinal County
Some RestrictionsPinal County Development Services Code § 2.40.030
A. Permitted coverage: One-third of the total area of the rear and side yards. B. Maximum height: 20 feet. C. Minimum distance to main building: Seven feet. D. Minimum distance to front lot line: 60 feet. E. Minimum distance to side and rear lot lines: four feet if building is not used for poultry or animals; 15 feet to side lot line and four feet to rear lot line if building is used for poultr...
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