Goodyear, AZ Accessory Structures: ADU Rules (2026)

3 lets a Goodyear single-family lot carry up to two Accessory Dwelling Units at once, one attached and one detached, and a third detached unit if the lot is at least one acre and the extra unit is recorded as a Restricted-Affordable Dwelling Unit under a deed restriction or development agreement with the City that runs with the property for at least 30 years and is recorded at the Maricopa County Recorder's Office. An ADU cannot carry its own street address separate from the principal house, so it always shares the primary dwelling's address.

It must be self-contained, with its own bedroom and bathroom, and may include a kitchen, though a kitchen isn't required; a parking area or garage is optional as well. Its size is capped at whichever is smaller: 75 percent of the principal house's gross floor area, or 1,000 square feet. On the lot, an ADU gets only a 5-foot side and rear setback, tighter than what the main house typically needs, but its front and street setback, lot coverage, building frontage, and overall height must match the principal dwelling exactly.

S. 18, but it must still meet the City's adopted design guidelines. Finally, no ADU is allowed on a single-family lot within the noise-affected territory of Luke Air Force Base, another military airport, or an FAA-licensed commercial or general-aviation public airport where the noise level exceeds 65 decibels, an exclusion that reaches much of the airport-influence area on Goodyear's west side.