Pinal County, AZ Building Setbacks & Zoning: Lot Coverage Limits (2026)
Key Facts
- Coverage cap
- 1/3 of rear + side yard area (CR-2 and CR-3)
- Max accessory height
- 20 feet in both zones
- CR-2 animal-building setback
- 50 ft vs. standard 4 ft
- CR-3 setback
- Flat 4 feet regardless of use
- Livestock shade structures
- Exempt from the setback
- Civil penalty
- Up to $750 individual / $10,000 enterprise, per day
- Variance path
- Board of Adjustment, § 2.155.040
Summary
Detached accessory buildings in Pinal County's CR-2 Single Residence zone cannot cover more than one-third of the combined rear and side yard area, per Development Services Code § 2.65.030(A). The same one-third cap applies in the CR-3 zone, but the two zones set different side and rear setbacks for buildings that house poultry or animals, and a roofed, wall-less livestock shade structure is exempt from the setback altogether.
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; 50 feet if building is used for poultry or animals. F. A structure having a roof supported by columns and used exclusively for the shading of livestock shall not be considered a building and shall not need to conform to setback requirements that apply to buildings used to house livestock.
Full Breakdown
Pinal County Development Services Code § 2.65.030 sets the accessory-building rules for the CR-2 Single Residence zone: permitted coverage is capped at 'one-third of the total area of the rear and side yards' (subsection A), maximum height is 20 feet (B), a detached accessory building must sit at least seven feet from the main building (C) and 60 feet from the front lot line (D). Subsection E splits the side and rear setback by use: four feet if the building is not used for poultry or animals, but 50 feet if it is.
Subsection F carves out an exemption: 'a structure having a roof supported by columns and used exclusively for the shading of livestock shall not be considered a building' and does not need to meet the animal-building setback. The CR-3 zone repeats the same one-third coverage cap and 20-foot height limit at § 2.70.030(A)-(B), but its side and rear setback is a flat four feet regardless of use (§ 2.70.030(E)), and it allows an accessory building to attach to the main structure by an unenclosed wall no taller than six feet (§ 2.70.030(F)).
Coverage and setback compliance is verified by Planning and Development Services when it issues the zoning clearance required before a building permit under § 2.160.020; a lot owner who cannot meet the one-third cap or the setback can apply to the Board of Adjustment for a variance under § 2.155.040 by showing unnecessary hardship.
Violations & Fines
Building or expanding a detached accessory structure past the one-third rear/side-yard coverage cap, or inside the required setback, is a zoning violation enforceable under Pinal County Code § 2.160.130 as a Class 2 misdemeanor pursuant to A.R.S. § 11-808. Section 2.160.140 also allows a civil penalty of up to $750.00 for an individual or $10,000.00 for an enterprise, with each day the violation continues counted as a separate offense.
Frequently Asked Questions
How much of my backyard can a shed or accessory building cover in Pinal County?
Does a chicken coop or animal shed need a bigger setback than a shed?
Is a livestock shade structure exempt from the setback?
What if my lot can't fit an accessory building within the coverage limit?
Sources & Official References
Other rules in Pinal County
Compare Pinal County to another location·View the Arizona building setbacks & zoning overview
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