Shed permit rules in Pinal County, AZ — also referred to as storage shed, backyard shed, or accessory building regulations — set size limits, setbacks, and when a building permit is required.
A one-story detached storage shed, tool shed, or playhouse is exempt from a Pinal County building permit if its roof area does not exceed 200 square feet and it has no electrical, plumbing, or mechanical connections. Zoning setbacks still apply.
Pinal County Building Safety follows the adopted building code, which exempts small one-story detached accessory buildings used as tool or storage sheds, playhouses, and similar non-habitable uses, provided the roof area measured wall-to-wall does not exceed 200 square feet and the structure has no utility connections. Adding power, plumbing, or mechanical service removes the exemption and triggers a permit. A permit exemption is not a setback exemption: the shed must still meet the zoning ordinance's accessory-building setbacks for the lot's zone. Inside incorporated cities the city building department sets its own shed thresholds.
Building a shed over 200 square feet or with utility connections without a permit is a building-code violation subject to stop-work orders and fines from Pinal County Building Safety.
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