ADU Rules in Chandler, Arizona
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ADU Rules in Chandler, Arizona
Arizona's casita statute is HB 2720 (2024), codified at A.R.S. §9-461.18, applying to cities with 75,000+ population. HB 2673 is unrelated.
Permitted ADU Types
- Detached ADU: A standalone structure on the residential lot
- Attached ADU: Addition to primary dwelling with own entrance
- Garage Conversion: Converting existing garage to living space
Size Limits
| ADU Type | Maximum Size |
|---|---|
| Detached ADU | 1,000 sq ft or 50% of primary dwelling |
| Attached ADU | 50% of primary dwelling floor area |
| Garage Conversion | Existing footprint |
Setbacks
- Front: Base zone standard (typically 20 ft)
- Side: 5 feet minimum
- Rear: 5–10 feet minimum
Height
- Detached ADU: Maximum 18 feet
- Cannot exceed primary dwelling height
Parking
One off-street parking space required per ADU.
Permit Process
- Verify zoning: Contact Chandler Development Services
- Submit plans: Architectural and site plans
- Plan review: Zoning and building compliance
- Building permit: Issued after approval
- Inspections: Required at each phase
- Certificate of Occupancy: Before occupancy
Contact
Chandler Development Services 215 E. Buffalo Street, Chandler, AZ 85225 Phone: (480) 782-3000 Website: chandleraz.gov/development-services
Disclaimer: Verify current requirements with Chandler Development Services before starting any project.
More about Chandler Zoning
Sources
- Chandler Zoning Code — Residential Districts·library.municode.com·Accessed 2026-04-07·Direct link
- City of Chandler Development Services·chandleraz.gov·Accessed 2026-04-07·Direct link
FAQ
Are ADUs allowed in Chandler, Arizona?
Arizona's casita statute is HB 2720 (2024), codified at A.R.S. §9-461.18, applying to cities with 75,000+ population. HB 2673 is unrelated.
What is the maximum ADU size in Chandler?
Detached ADUs in Chandler are generally limited to 1,000 square feet or 50% of the primary dwelling, whichever is less.
Does Chandler require owner occupancy for an ADU?
Chandler does not require owner occupancy for ADUs consistent with Arizona state law.
Disclaimer: The information on this website is provided for general informational purposes only and does not constitute legal, financial, or professional advice. Always verify current requirements with your local planning department.