ADU Permits: Chandler vs Peoria
How do adu permits rules compare between Chandler, AZ and Peoria, AZ?
Chandler and Peoria 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 →Peoria, AZ
Maricopa County
Peoria permits accessory dwelling units (often locally called casitas) 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. Peoria (population approximately 190,000) is subject to the mandate. The Peoria Zoning Ordinance (PZO) Article 14-2 (Residential Districts) was amended to comply. Single-family lots may have one detached and one attached ADU; lots over one acre may add a third detached unit.
View full Peoria rules →Key Facts Comparison
| Fact | Chandler | Peoria |
|---|---|---|
| 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 | Peoria Development and Engineering |
| Building Code | 2024 IRC / IFGC as adopted | - |
| By-Right Standard | Yes on single-family lots | Yes on single-family lots |
| City Reference | - | Peoria Zoning Ordinance Article 14-2 |
| Maximum Size | - | 75% of primary or 1,000 sq ft |
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.
Peoria FAQ
Can I build a casita ADU in Peoria by-right?
Yes. Under Arizona HB 2720 (Ariz. Rev. Stat. 9-461.18), Peoria 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 Peoria Development and Engineering are still required.
How big can my Peoria ADU be?
Under ARS 9-461.18, your ADU may not exceed 75% of the gross floor area of the primary dwelling or 1,000 square feet, whichever is less. Setback, height, and lot-coverage standards from Peoria's residential zoning district still apply to the structure itself.
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