Peoria ADU Zoning Rules & Permit Guide

ADU Regulations in Peoria, Arizona

Updated September 29, 2026

In the northwest Phoenix metro, Peoria's ADU rules are established by municipal zoning code. Arizona has no statewide ADU law, so the city's lot and design requirements apply to all accessory units.

Below is a summary of the key zoning rules applicable to Accessory Dwelling Units in Peoria as of 2026. Regulations are governed by local zoning ordinances, as Arizona has no statewide ADU mandate.

Additional Local Requirements for Peoria

• ADU allowed in residential zones per local ordinance
• Minimum 200 sq ft
• Building permit required
• ⚠️ AZ has NO statewide ADU law — city code governs

Frequently Asked Questions About ADUs in Peoria

Can I build an ADU in Peoria?

This Arizona city permits ADUs under local ordinance. Confirm your zone's eligibility with the planning department first.

What is the maximum ADU size allowed in Peoria?

ADUs in Peoria can be up to 1,000 square feet, subject to the property's zoning and lot coverage limits. Always confirm the exact allowed size with the Peoria planning department before designing your project.

What are the setback requirements for an ADU in Peoria?

ADUs in Peoria generally require setbacks of 5 ft rear, 5 ft side. Arizona has no statewide ADU mandate — the exact setback figures come from Peoria's own zoning code, so confirm them with the city planning department before you design.