On October 22, 2024, Tucson approved amendments to the Unified Development Code regarding Accessory Dwelling Unit (ADU) regulations and timelines for zoning applications. The new regulations allow up to two ADUs per residential lot (one attached and one detached) and up to three on larger lots with affordable housing provisions. The code also removes parking requirements, sets a maximum height limit of 25 feet, and establishes 5-foot minimum setbacks for ADUs. Zoning application timelines were also updated to ensure applications are reviewed and processed within 180 days, with extensions allowed under specific conditions.
These changes align Tucson with state legislation and encourage the development of affordable housing options by simplifying ADU regulations and streamlining zoning processes.