ADU Rules in Tucson, AZ — 2026 Guide
Check if your Tucson property qualifies for an ADU in 20 seconds
Tucson ADU Rules at a Glance
Tucson is considered ADU-friendly. Here are the key regulations.
- Tucson proactively adopted a local ADU ordinance in 2020, ahead of state law.
- ADUs allowed up to 1,000 sqft or 75% of primary home area.
- No parking requirement for ADUs within 1/4 mile of a transit stop.
- Lower construction costs than Phoenix or Scottsdale make ADUs more financially viable.
What ReadyPermit Checks for Tucson Properties
Enter any Tucson address and get an instant ADU feasibility analysis covering:
Zoning Compliance
Verify your Tucson 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 Tucson 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 Tucson Property Free
Enter your address below. In under 20 seconds you will know if your Tucson lot qualifies for an ADU — no phone calls, no waiting.
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