Are ADUs legal in Arizona?
Yes — Arizona permits ADUs per HB 2720 (2023). Local municipalities set setback, size, and permit-review specifics.
What are the size limits on an ADU in Arizona?
Arizona permits ADUs up to approximately 1000 square feet per HB 2720 (2023). Individual municipalities may set lower caps; verify with your city or county planning department before ordering.
Do I need a permit for an ADU in Arizona?
Yes — every ADU in Arizona requires a building permit issued by the city or county. The permit process typically runs 30-85 days depending on jurisdiction, complexity, and whether discretionary review is triggered.
Can I rent out my ADU in Arizona?
Yes — long-term rental of an ADU is generally permitted in Arizona. Short-term rental (Airbnb / VRBO under 30 days) is subject to municipal registration and may require additional permits.
Does Arizona require owner-occupancy on the primary residence when I have an ADU?
No — Arizona does not require owner-occupancy under state statute per HB 2720 (2023). Local ordinances may still add owner-occupancy requirements in specific cities.
What zoning districts allow ADUs in Arizona?
Most Arizona municipalities permit ADUs in single-family residential zones (R-1, R-2 equivalent). Arizona HB 2720 (2023) preempted municipal ADU bans statewide for cities over 75,000. Phoenix, Tempe, and Tucson permit casitas by-right on lots ≥5,000 sqft as of the 2023 zoning updates. Consult your city zoning code for the specific district table.
How long does an ADU permit take in Arizona?
Typical ADU permit timelines in Arizona run 30-85 days from application to approval. Fast-permitting counties can move in under 30 days; metro-core jurisdictions with discretionary review can extend to 150+ days.
Are there setback requirements for an ADU in Arizona?
Yes — most Arizona municipalities apply the same setback requirements to ADUs that apply to the primary structure (typically 5-10 feet rear and side, 15-25 feet front). Some cities apply reduced setbacks specifically for detached ADUs. Verify with your city zoning code.
Can I finance an ADU purchase in Arizona?
Yes — several financing pathways cover ADU purchases in Arizona: Fannie Mae HomeStyle Renovation, FHA 203(k), construction-to-perm loans, HELOC on the primary residence, and cash. Check with modular-friendly lenders like 21st Mortgage, Cascade Financial, and Triad Financial for the Arizona-specific product.
What's the difference between an ADU and a JADU in Arizona?
The JADU (Junior ADU) category originated in California and is not a distinct legal category in Arizona. Most Arizona municipalities regulate internal conversions and detached units under a single ADU/accessory apartment definition.