How Peoria Handles Accessory Structures: A Practical Guide

Peoria maintains 119 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 Peoria falls on the strict-to-permissive spectrum compared to other cities.

Shed Rules

Peoria regulates accessory buildings under Section 21-422 of the zoning code. Small sheds under 200 sq ft may not require a building permit but must comply with setback and height requirements.

Key details: Code Section: Sec. 21-422. Permit Exempt: Under 200 sq ft may be exempt. Location: Rear or side yards. Setbacks: Must comply with zoning requirements.

Structures violating setbacks or built without required permits face code compliance action and may require relocation or removal.

Garage Conversions

Garage conversions in Peoria require building permits and must meet building code standards for habitable rooms. Replacement parking may be required depending on the zoning district.

Key details: Permit Required: Yes, building permit needed. Parking: Replacement parking may be required. Building Code: Must meet habitable room standards. ADU Option: Can convert under ADU regulations.

Unpermitted garage conversions result in code violations and may require restoration or retroactive permitting.

ADU Rental Restrictions

Peoria ADUs may be rented for long-term and short-term stays. Ariz. Rev. Stat. section 9-461.18 prohibits Peoria from banning short-term rental of ADUs as a category. Short-term rentals (under 30 days) require a Peoria vacation rental permit and a Transaction Privilege Tax (TPT) license from the Arizona Department of Revenue under Ariz. Rev. Stat. section 9-500.39, with mandatory emergency contact, neighbor notification, and liability insurance.

Key details: Long-Term Rental: Permitted. STR Law: ARS 9-500.39 (state-authorized regulation). Peoria Registration: Required. TPT License: Required from AZ Dept. of Revenue. License Fee Cap: $250 (state-imposed).

Operating an unregistered short-term rental violates Ariz. Rev. Stat. section 9-500.39 and Peoria's vacation rental requirements and can result in civil penalties (up to $500 for a first verified violation, escalating for repeats) plus per-occurrence penalties for noise, parking, occupancy, and trash violations. Failure to provide neighbor notification or to maintain an emergency contact and required insurance can result in suspension. Operating without a state TPT license creates state tax liability.

ADU Permits

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.

Key details: State Mandate: Ariz. Rev. Stat. 9-461.18 (HB 2720). City Reference: Peoria Zoning Ordinance Article 14-2. Units Allowed: 1 detached + 1 attached (3 if 1+ acre). Maximum Size: 75% of primary or 1,000 sq ft. Permit Authority: Peoria Development and Engineering.

Constructing or occupying an ADU without permits from Peoria Development and Engineering violates the City building code and the Peoria Zoning Ordinance, 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.

Peoria is more permissive than most cities when it comes to adu permits. That said, there are still limits.

ADU Owner Occupancy

Peoria 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. The Peoria Zoning Ordinance residential districts were amended to remove 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. Investor Use: Permitted. Occupant Limits: Cannot be city-restricted beyond IBC load. HOA Restrictions: Limited by state preemption.

Peoria 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 Peoria gives residents more flexibility on adu owner occupancy.

ADU Impact Fees

Ariz. Rev. Stat. section 9-461.18 limits the fees Peoria may charge on accessory dwelling units and expressly prohibits requiring off-site street improvements. Standard building permit and plan review fees through Peoria Development and Engineering apply, calculated on construction valuation under the City's adopted fee schedule. Water and sewer development fees may apply if the ADU triggers a new utility connection.

Key details: Dedicated ADU Impact Fee: None in Peoria. State Cap: ARS 9-461.18 limits excessive ADU fees. Street Improvement: Cannot be required (state preempted). Permit Fee Basis: Construction valuation. Utility Fees: Only if new connections required.

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.

Peoria is more permissive than most cities when it comes to adu impact fees. That said, there are still limits.

Tiny Homes

Tiny homes on permanent foundations may qualify as ADUs in Peoria under the recently updated Section 21-316 (Accessory Dwelling Units). Peoria updated its ADU regulations in late 2024 to comply with Arizona HB 2720. Tiny homes on wheels are classified as RVs and cannot be permanent residences. Foundation-based tiny homes must meet all building code requirements.

Key details: On Foundation: Permitted as ADU under Section 21-316. On Wheels: Classified as RV, no permanent residence. State Law: AZ HB 2720 expanded ADU rights. Permit: Building permit required. Updated: Late 2024 ADU regulation update.

Using a tiny home on wheels as a permanent residence violates zoning. Building without permits results in code enforcement action.

ADU Rules

Peoria allows Accessory Dwelling Units on single-family lots following Arizona HB 2720. ADUs must be smaller than the primary dwelling, meet setback requirements, and comply with building codes.

Key details: State Law: HB 2720 requires cities to allow ADUs. Size: Must be smaller than primary dwelling. Self-Contained: Sleeping, sanitation, and possibly kitchen. Permit: Building permit required.

Unpermitted ADUs must be brought into compliance. Construction without permits results in code violations and required permitting.

Carport Rules

Carports in Peoria require a building permit and must comply with the zoning ordinance (Chapter 21). Accessory buildings under 200 square feet and 8 feet tall may be placed near property lines. Larger carports must meet full setback requirements. The combined area of accessory structures is limited by lot coverage maximums for the zoning district.

Key details: Permit Required: Yes. Small Structure Exemption: Under 200 sq ft / 8 ft may be near property line. Larger Structures: Must meet full zoning district setbacks. Lot Coverage: Counts toward maximum. Code Section: Section 21-422.

Carports built without permits or outside setback requirements may result in code enforcement action, fines, and required removal or modification.

The Bottom Line

Compared to many U.S. cities, Peoria 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.

All of the above reflects Peoria's municipal code as of our last review. If you need specifics on fines, exemptions, or filing requirements, the detailed ordinance pages linked above have the full breakdown.