A bill for an act relating to county and city regulation of accessory dwelling units. (Formerly SSB 3070.) Effective date: 07/01/2026.

Iowa Senate File 2369 (SF2369) is a law that standardizes how cities and counties in Iowa can regulate accessory dwelling units (ADUs). ADUs are small, secondary homes on the same property as a main house, like in-law suites or backyard cottages. The law sets clear rules for local governments, ensuring consistent regulations across the state. It aims to make it easier for homeowners to add ADUs, which can help address housing shortages and provide more affordable living options. The law was signed by the governor on April 9, 2026, and will take effect on July 1, 2026.

Supporters of SF2369 praise the law for promoting affordable housing and increasing housing availability in Iowa. By simplifying the process for homeowners to build ADUs, the law is expected to provide more rental options and help alleviate housing shortages. Advocates also highlight the potential economic benefits, such as increased property values and additional income for homeowners who rent out ADUs. The law's passage with strong bipartisan support indicates broad agreement on its potential positive impact on the state's housing market.

Critics of SF2369 express concerns about the law's impact on local control and community character. Some local officials and residents worry that standardized regulations may not account for the unique needs and preferences of different communities. There are also fears that an increase in ADUs could lead to overcrowding, strain on local infrastructure, and changes to neighborhood aesthetics. Additionally, some argue that the law may not do enough to ensure that ADUs remain affordable and accessible to low-income residents.