ADU Permits: Chandler vs Glendale
How do adu permits rules compare between Chandler, AZ and Glendale, AZ?
Chandler and Glendale have similar restriction levels.
Chandler, AZ
Maricopa County
Chandler permits accessory dwelling units by-right under Arizona Revised Statutes section 9-461.18, enacted by HB 2720 in 2024 and effective for cities over 75,000 population on or before January 1, 2025. Chandler's Land Use and Zoning Code (City Code Chapter 35) was amended in late 2024 to comply. Single-family lots may have one detached and one attached ADU; lots over one acre may add a third detached ADU.
View full Chandler rules →Glendale, AZ
Maricopa County
Glendale permits accessory dwelling units by-right under Arizona Revised Statutes section 9-461.18, enacted by HB 2720 in 2024 and effective for cities over 75,000 population on or before January 1, 2025. Glendale (population approximately 250,000) is subject to the mandate. Glendale City Council adopted ADU amendments to the Uniform Development Code (Chapter 35) on December 10, 2024. Single-family lots may have one detached and one attached ADU; lots over one acre may add a third.
View full Glendale rules →Key Facts Comparison
| Fact | Chandler | Glendale |
|---|---|---|
| State Mandate | Ariz. Rev. Stat. 9-461.18 (HB 2720) | Ariz. Rev. Stat. 9-461.18 (HB 2720) |
| City Code | Chandler Code Chapter 35 (amended 2024) | - |
| Units Allowed | 1 detached + 1 attached (3 if 1+ acre) | 1 detached + 1 attached (3 if 1+ acre) |
| Permit Authority | Chandler Development Services | - |
| Building Code | 2024 IRC / IFGC as adopted | 2024 IRC / IFGC as adopted |
| By-Right Standard | Yes on single-family lots | - |
| City Ordinance Adopted | - | Dec 10, 2024 (Ch. 35 UDC) |
| Maximum Size | - | 75% of primary or 1,000 sq ft |
| Separate Water Meter | - | Required (Glendale rule) |
Highlighted rows indicate differences between cities.
Chandler FAQ
Can I build an ADU in Chandler by-right?
Yes. Under Arizona HB 2720 (Ariz. Rev. Stat. 9-461.18), Chandler must allow one detached and one attached ADU by-right on every single-family lot. Lots over one acre may add a third detached unit. Building, plumbing, and electrical permits through Chandler Development Services are still required.
How long does ADU permitting take in Chandler?
Plan review for a standard residential ADU runs approximately two to six weeks at Chandler Development Services, depending on plan completeness and current workload. Construction inspections occur at standard milestones before final certificate of occupancy is issued.
Glendale FAQ
Can I build an ADU in Glendale by-right?
Yes. Under Arizona HB 2720 (Ariz. Rev. Stat. 9-461.18) and Glendale's December 10, 2024 amendments to the Uniform Development Code (Chapter 35), Glendale must allow one detached and one attached ADU by-right on every single-family lot. Lots over one acre may add a third detached unit. Building, plumbing, electrical, and fuel-gas permits through Glendale Building Safety are still required.
Does my Glendale ADU need a separate water meter?
Yes. Glendale requires all accessory dwelling units to have separate utility meters including a separate city water meter, which requires a new water tap to the city water main in the street or right-of-way. The ADU shares the primary address with a Unit 1 and Unit 2 suffix rather than receiving a new address.
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