ADU Rules in Phoenix, AZ — 2026 Guide
Check if your Phoenix property qualifies for an ADU in 20 seconds
Phoenix ADU Rules at a Glance
Phoenix is considered ADU-friendly. Here are the key regulations.
- AZ SB 1117 (2023) requires all Arizona cities to permit ADUs on single-family lots.
- Phoenix allows ADUs up to 1,000 sqft by right.
- ADU must meet 5 ft side/rear setback minimums.
- HOAs can no longer outright prohibit ADUs under state law.
What ReadyPermit Checks for Phoenix Properties
Enter any Phoenix address and get an instant ADU feasibility analysis covering:
Zoning Compliance
Verify your Phoenix lot is zoned for ADU construction under current AZ and local rules.
Setbacks & Coverage
Check required setbacks, lot coverage limits, and height restrictions for your specific parcel.
ADU Size Limits
Calculate the maximum ADU square footage allowed based on your lot size and primary dwelling.
Permit Requirements
Understand what permits and approvals Phoenix requires before you can break ground.
Flood & Hazard Zones
Identify if your property falls in a flood zone, fire zone, or other hazard overlay.
Lot & Parcel Data
Pull parcel boundaries, lot dimensions, and existing structures from county records.
Check Your Phoenix Property Free
Enter your address below. In under 20 seconds you will know if your Phoenix lot qualifies for an ADU — no phone calls, no waiting.
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