Permit Required? Required
Typical Fee Range $1,000–$4,000 Includes building, zoning, and utility capacity fees.
Fee Method Valuation-based
Apply Online Apply at Planning and Development Services Department →

What's Required in Tucson

  • Building permit required for all secondary dwelling units.
  • Must have full kitchen and bathroom facilities for habitation.
  • Requires architectural plan set including foundation.
  • Must meet lot coverage and setback rules for the zoning district.
  • Owner-occupancy of the primary home is a mandatory requirement.
  • Maximum size capped (usually 1,000 sq ft or 75% of main house).

How to Get a ADU Permit in Tucson

1

Step 1: Zoning Verification

Confirm an ADU is allowed on your lot via PDSD Planning.

2

Step 2: Design Documents

Prepare detailed site plans and architectural drawings.

3

Step 3: Submit Portal

Apply for a New Accessory Structure permit online.

4

Step 4: Multi-Agency Review

Checked by Building, Zoning, and Fire departments.

5

Step 5: Inspections

Full series from footings to final occupancy sign-off.

Frequently Asked Questions

Yes, once the Certificate of Occupancy is issued.
Many ADUs in Tucson use sub-meters from the main house.
Expect 4-8 weeks for a new detached ADU.