Accessory Structures in Avondale, AZ (2026)
2 verified accessory structures rules for Avondale, Arizona, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
One attached ADU plus one detached ADU are permitted by right on any single-family lot under an acre in Avondale; lots of an acre or more can add a second detached unit if it's income-restricted affordable housing. Zoning Ordinance Section 28-33(a) caps ADU size at 75% of the primary home's floor area or 1,000 square feet, limits bedrooms to two, and sets 5-foot side and rear setbacks.
Avondale Accessory Dwelling Unit Rules
Some RestrictionsAvondale Zoning Ordinance Sec. 28-33(a) (Uses permitted with conditions - Accessory dwelling units)
(a)Accessory dwelling units (ADUS) are allowed in certain residential zoning districts, subject to the following:(1)Permitted use. The following ADUS are considered a permitted use, subject to building, fire and public health and safety codes and regulations, and with adequate public utility services:(A)No more than one attached ADU and one detached ADU on a single-family dwelling lot that is l...
Shed & Carport Rules
Avondale's zoning ordinance bars detached sheds and other accessory buildings from any front yard and caps their height at fifteen feet unless the structure is an accessory dwelling unit permitted under section 28-33. A shed placed in the rear half of a lot can encroach into standard side and rear setbacks only under distance rules keyed to lot type, and it still counts toward the lot's maximum coverage.
Avondale Detached Accessory Building Rules
Some RestrictionsAvondale Zoning Ordinance § 28-133 (Detached accessory buildings)
(a)Detached accessory buildings shall not be permitted within a front yard, as defined in article 1 of this Zoning Ordinance.(b)Any detached accessory building not located in the rear one-half (½) of a lot shall maintain such yards as are required for a dwelling unit on the same lot except for an accessory dwelling unit (ADU) per section 28-33...(3)On any other corner lot, an accessory building...
Looking for Maricopa County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Avondale city rules.
Accessory Structures in Maricopa County →