This bill mandates that counties and cities in Iowa adopt regulations allowing at least one accessory dwelling unit (ADU) on the same lot as a single-family residence. The ADU must comply with applicable building regulations and can only be restricted by state historic building codes, deed restrictions, or rules from common interest communities. The bill prohibits counties and cities from imposing various limitations on ADUs, such as size restrictions (not smaller than 1,000 square feet), more stringent placement or appearance requirements than those for single-family residences, and additional parking requirements. It also prevents restrictions on occupancy based on the property owner's residency status or the relationship between occupants.

Furthermore, the bill stipulates that counties and cities must approve ADU permit applications that meet the outlined requirements without discretionary review, and any application not acted upon within 30 days is automatically approved. If a permit is denied, the reasons must be provided in writing. The bill also clarifies definitions for accessory dwelling units, dwelling units, and single-family residences, ensuring that ADUs can share utility lines with the main residence under certain conditions. Overall, the legislation aims to facilitate the construction and use of ADUs while ensuring that local regulations do not impose unnecessary barriers.

Statutes affected:
Introduced: 331.301, 103A.43