Avondale, AZ Accessory Structures: Shed & Carport Rules (2026)

Section 28-133 of the Avondale Zoning Ordinance governs detached accessory buildings in single-family residential districts. Front-yard placement is flatly prohibited. If a shed or workshop sits outside the rear half of the lot, it must meet the same yard setbacks required for the house itself, unless it qualifies as an ADU under section 28-33. Structures placed in the rear half of the lot get more flexibility: on a through lot, the building can't sit closer to the rear line than the required front setback; on a corner lot next to a key lot, the setback from the street side can't be less than the key lot's front yard requirement, though the city will never demand more than twenty-five feet; on any other corner lot, ten feet from the property line is the minimum; and on an AG-zoned lot, the accessory building must stay twenty feet from both rear and side lines.

Height is capped at fifteen feet for anything accessory to a residential building, except ADUs and, on AG-zoned residential lots, animal shelters, silos, and similar agricultural structures, which may rise to the height allowed for the main building. Every accessory building counts toward the lot's overall maximum lot coverage, so a large shed can push a property over its coverage limit even if setbacks are met. The current text reflects amendments adopted by Ordinance No. 2027-0924 (September 9, 2024) and Ordinance No. 2032-1124 (November 18, 2024).