Accessory Structures in Avondale, AZ (2026)
5 verified accessory structures rules for Avondale, Arizona, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Avondale's Zoning Ordinance Section 28-33 permits at least one attached and one detached ADU on any single-family lot. ADUs are capped at 75 percent of the main home's floor area or 1,000 square feet, whichever is less, with five-foot side and rear setbacks, no extra parking, and no owner-occupancy requirement.
Avondale Accessory Dwelling Unit (ADU) Rules
Few RestrictionsShed Rules
Avondale's Zoning Ordinance treats sheds as detached accessory buildings. Under Section 28-133, they cannot be placed in a front yard, may not exceed 15 feet in height when accessory to a residence, and count toward maximum lot coverage. Sheds in the rear half of a lot may encroach into required rear and side setbacks.
Avondale Shed and Detached Accessory Building Rules
Some RestrictionsGarage Conversions
Avondale's Zoning Ordinance has no section dedicated to garage conversions, but Section 28-164 requires single-family dwellings to provide an enclosed garage with two interior spaces. Converting a garage to living space removes required covered parking, so the spaces generally must be replaced to stay code-compliant.
Avondale Garage Conversion Rules
Some RestrictionsCarport Rules
Avondale's Zoning Ordinance does not set carport-specific residential setbacks, so carports follow the general accessory building and parking rules. In single-family districts they generally must meet required yards, while Section 28-133(d) lets covered parking canopies encroach into side and rear setbacks only in non-residential districts.
Avondale Carport Rules
Some RestrictionsTiny Homes
Avondale has no tiny-home-specific ordinance. A tiny house on a permanent foundation is regulated like any dwelling or accessory dwelling unit under Section 28-33, but Avondale's ADU rules expressly prohibit using a mobile home, RV, or other movable habitable space as an ADU, which rules out most tiny homes on wheels.
Avondale Tiny Home Rules
Some RestrictionsLooking for Maricopa County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Avondale city rules.
Accessory Structures in Maricopa County →