ADU Regulations in Tempe, Arizona
Home to Arizona State University in Maricopa County, Tempe allows ADUs in residential zones under local ordinance. The high rental demand from students makes ADUs a popular option for property owners.
Below is a summary of the key zoning rules applicable to Accessory Dwelling Units in Tempe as of 2026. Regulations are governed by local zoning ordinances, as Arizona has no statewide ADU mandate.
| Regulation | Requirement |
|---|---|
| Maximum Size | 1,000 sq ft |
| Property Setbacks | 5 ft rear, 5 ft side |
| Extra Parking Required | Required (1 space) |
| Owner Occupancy | Not required |
Additional Local Requirements for Tempe
- ADU allowed in residential zones per local ordinance
- Minimum 200 sq ft
- Building permit required
- ⚠️ AZ has NO statewide ADU law — city code governs
📥 Download the Complete Tempe ADU Cheat Sheet
Get the step-by-step permit checklist, official government forms, direct planning department contacts, and estimated fees — all in one printable PDF for Tempe, Arizona.
Download the Complete Tempe ADU Cheat Sheet — $12Frequently Asked Questions About ADUs in Tempe
Can I build an ADU in Tempe?
This Arizona city permits ADUs under local ordinance. Confirm your zone's eligibility with the planning department first.
How big can my ADU be in Tempe?
What is the maximum ADU size allowed in Tempe? ADUs in Tempe can be up to 1,000 square feet, subject to the property's zoning and lot coverage limits. Always confirm the exact allowed size with the Tempe planning department before designing your project.
What about setbacks and other requirements in Tempe?
What are the setback requirements for an ADU in Tempe? ADUs in Tempe generally require setbacks of 5 ft rear, 5 ft side. California state law (AB 68) limits local setback requirements to 4 feet for existing structures, but always verify with local zoning.
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