How Chandler Handles Accessory Structures: A Practical Guide

Chandler maintains 120 local ordinances across all categories, and 9 of those deal specifically with accessory structures. Here is a breakdown of what the city actually requires, what is prohibited, and where Chandler falls on the strict-to-permissive spectrum compared to other cities.

ADU Impact Fees

Chandler does not impose dedicated ADU impact fees. Ariz. Rev. Stat. section 9-461.18 limits the fees cities may charge on accessory dwelling units to ensure compliance with the state by-right mandate. Standard building permit and plan review fees through Chandler Development Services apply, calculated on construction valuation. Water and sewer development fees may apply only when new utility connections are installed.

Key details: Dedicated ADU Impact Fee: None in Chandler. State Cap: ARS 9-461.18 limits excessive ADU fees. Permit Fee Basis: Construction valuation. Utility Fees: Only if new connections required. Transportation Impact Fee: Not applied to ADUs.

Failure to pay required permit and connection fees blocks issuance of building permits and prevents lawful construction. Excessive fees that violate Ariz. Rev. Stat. section 9-461.18 may be challenged through administrative appeal or court action under the state preemption framework. Unpermitted utility tap-ins discovered later can result in disconnection, back-billing, and code enforcement.

The rules around adu impact fees in Chandler lean permissive, but that does not mean anything goes.

ADU Permits

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.

Key details: State Mandate: 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). Permit Authority: Chandler Development Services. Building Code: 2024 IRC / IFGC as adopted.

Constructing or occupying an ADU without permits from Chandler Development Services violates the City building code and Chapter 35, triggering stop-work orders, daily fines, and required removal or legalization. Unpermitted electrical, plumbing, or gas work creates safety risk and can void homeowner insurance. Failure to obtain a final certificate of occupancy prevents lawful habitation and complicates future sale of the property.

If you are coming from a city with tighter rules, you will find Chandler gives residents more flexibility on adu permits.

ADU Rental Restrictions

Chandler ADUs may be rented for long-term and short-term stays. Ariz. Rev. Stat. section 9-461.18 prohibits Chandler from banning short-term rental of ADUs as a category. Short-term rentals (under 30 days) must be licensed under Chandler City Code Chapter 22, with mandatory neighbor notification, an emergency contact, and a Transaction Privilege Tax (TPT) license. License fees are capped at $250 per state law.

Key details: Long-Term Rental: Permitted. STR Ordinance: Chandler Code Chapter 22. STR License Required: Yes (since Aug 1, 2023). License Fee Cap: $250 (state-imposed). Neighbor Notification: Required in writing.

Operating an unlicensed short-term rental violates Chandler City Code Chapter 22 and Ariz. Rev. Stat. section 9-500.39 and can result in fines up to $1,000 per month plus per-occurrence civil penalties for noise, parking, occupancy, and trash violations. Failure to provide neighbor notification or to maintain an emergency contact can result in license suspension. Repeat verified violations under state law can support license revocation.

ADU Owner Occupancy

Chandler may not require owner-occupancy as a condition of building or operating an accessory dwelling unit. Arizona Ariz. Rev. Stat. section 9-461.18 (HB 2720) preempts owner-occupancy mandates for cities over 75,000 population. Chandler's ADU code amendments adopted in November 2024 removed any prior owner-occupancy condition. Investor-owned ADUs are permitted on single-family lots.

Key details: State Preemption: Ariz. Rev. Stat. 9-461.18 (HB 2720). Owner-Occupancy: Not required. Chandler Code Amendment: November 2024. Investor Use: Permitted. Occupant Limits: Cannot be city-restricted beyond IBC load.

Chandler cannot enforce owner-occupancy as a condition of ADU permits or operation under Ariz. Rev. Stat. section 9-461.18. Any attempt to impose owner-occupancy through code enforcement, business license denial, or HOA covenant on covered ADU lots can be challenged in state court. Owners do not face enforcement for renting the main house and ADU to separate non-related tenants.

If you are coming from a city with tighter rules, you will find Chandler gives residents more flexibility on adu owner occupancy.

ADU Rules

Arizona HB 2720 (effective January 2025) allows ADUs by right on single-family lots in Chandler. Up to 2 ADUs per lot (1 attached, 1 detached). Maximum 1,000 sq ft or 75% of main dwelling. Chandler adopted Ordinance 5113 for compliance.

Key details: State Law: HB 2720 (Jan 2025). Max ADUs: 2 per lot (3 on 1+ acre). Size Limit: 1,000 sq ft or 75% of main. Setbacks: 5 ft side/rear minimum.

Building without permit: stop-work order and fines. ADUs exceeding size limits: zoning violation requiring modification or removal.

Tiny Homes

Chandler permits tiny homes as ADUs on permanent foundations in single-family zones, subject to the 15-foot height limit and one accessory building per lot. Tiny homes on wheels are classified as RVs.

Key details: Foundation Required: Permanent for ADU status. THOWs: Classified as RVs. Height Limit: 15 feet. STR Use: Prohibited for ADUs.

Unpermitted tiny homes or THOWs used as permanent residences face code enforcement. ADUs used as STRs violate Chandler's zoning code.

Carport Rules

Carport construction in Chandler requires a building permit and must comply with zoning setback and height requirements. Carports are classified as accessory structures subject to lot coverage limits.

Key details: Permit: Required. Max Height: 15 feet typically. Setbacks: Per zoning district. Compatibility: Must match primary home.

Unpermitted carports are subject to code enforcement requiring retroactive permits or removal. Non-compliant structures must be modified to meet setback and height standards.

Garage Conversions

Chandler permits ADUs on single-family lots subject to building setbacks and a 15-foot height limit. One accessory building is allowed per lot, and ADUs may not be used as short-term rentals.

Key details: Limit: One accessory building per lot. Max Height: 15 feet. Parking: One additional space required. STR Prohibited: ADUs cannot be STRs.

Unpermitted ADUs or garage conversions are subject to code enforcement. Using an ADU as a short-term rental violates Chandler's zoning code.

Shed Rules

Chandler regulates sheds and accessory buildings through the building code and zoning standards. Larger sheds require building permits, and all accessory structures must meet setback and height requirements.

Key details: Permit: Required above size threshold. Limit: One accessory building per lot. Max Height: 15 feet. Setbacks: Per zoning district.

Sheds placed in setback areas or exceeding size limits without permits are subject to code enforcement. Non-compliant structures may need to be relocated or removed.

The Bottom Line

Compared to many U.S. cities, Chandler gives residents more room on accessory structures. 3 of the 9 rules here are rated permissive. But permissive does not mean unregulated. There are still requirements, and the city does enforce them when violations are reported.

Keep in mind that Chandler can amend these rules at any council meeting. For the most current version of any rule mentioned here, check the specific ordinance page, where we track updates as they happen.