The proposed bill introduces provisions for the development of accessory dwelling units (ADUs) in areas zoned for single-family or multifamily use within municipalities and counties in Arizona. Municipalities and counties may adopt ordinances to designate areas where ADUs are permitted, set standards for their development, and ensure that ADUs comply with certain requirements. These standards may include regulations on parking, height, setbacks, landscaping, architectural review, and the size of the units, but cannot impose minimum lot size requirements. ADUs must not be sold separately from the primary residence, can be attached or detached, and are subject to size limitations—attached ADUs cannot exceed 50% of the primary dwelling's size, and detached ADUs cannot exceed 1,200 square feet.

The bill also mandates that municipalities and counties must act on permit applications for ADUs within 60 days if there is an existing dwelling on the lot. The definition of an ADU is clarified as a residential unit, either attached or detached, that provides complete independent living facilities for one or more persons and is located on the same lot as a proposed or existing primary residential unit.

Statutes affected:
Introduced Version: 9-462.10, 11-820.04