Iowa Senate Bill SF592

Iowa 2025-2026 Regular Session

• Introduced: 3/10/25
• Engrossed: 3/25/25
• Enrolled: 5/1/25
• Passed: 5/1/25

Caption

A bill for an act relating to county and city regulation of accessory dwelling units. (Formerly SSB 1182.) Effective date: 07/01/2025.

Impact

By enforcing these requirements, Senate File 592 is intended to facilitate the creation of more housing options, especially in areas where housing demand exceeds supply. The bill seeks to alleviate the housing crisis by making it easier for homeowners to add rental units, thus increasing the availability of affordable housing. Furthermore, it mandates that local governments cannot impose burdensome restrictions that would detract from the efficiency of constructing ADUs, such as additional parking requirements or restrictive design criteria.

Summary

Senate File 592 aims to establish regulations governing accessory dwelling units (ADUs) at both the county and city levels within Iowa. The bill requires counties and cities to permit at least one ADU per single-family residence, provided certain criteria are met, such as compliance with building regulations and specific size limitations. Notably, the ADU must not exceed 1,000 square feet or 50 percent of the primary residence's size, whichever is larger. The legislation also restricts the ability of local governments to impose regulations that would be more restrictive than state laws regarding the placement, parking, and utility connections of ADUs.

Sentiment

The sentiment around SF592 appears to be largely positive among supporters who view it as a necessary step toward enhancing housing availability and affordability, especially in urban areas. Proponents argue that the easier approval process for ADUs can help accommodate diverse living situations, such as multi-generational families or tenants seeking lower rental options. Conversely, some local officials and community members express concerns about the potential impacts on neighborhood integrity and existing infrastructure, fearing that an influx of ADUs may lead to overdevelopment or strained resources.

Contention

One significant point of contention is the balance between state regulations and local control. Advocates for local governance argue that municipalities should retain the authority to regulate housing development in ways that align with community needs. Critics of SF592 suggest that the bill may lead to unwelcome changes in neighborhood character and could exacerbate issues related to traffic and parking. Additionally, the provision that prohibits local governments from enacting stricter ordinances than those laid out in the bill has sparked debate on the governance roles of state versus local authorities.