Housing (Zoning)

signed · Iowa · Senate May 1, 2025

SF 592: A bill for an act relating to county and city regulation of accessory dwelling units.

This bill mandates that counties and cities in Iowa must allow at least one accessory dwelling unit (ADU) on lots with single-family residences. It directly affects property owners by standardizing and simplifying the process of building ADUs, and local governments by limiting their regulatory authority. The legislation sets statewide parameters, such as allowing ADUs up to 1,000 square feet or 50% of the main house, whichever is larger. It prohibits local ordinances from imposing overly restrictive rules on aspects like design, parking, owner-occupancy, or separate utility connections. Furthermore, it requires local governments to approve compliant ADU permits without discretionary review, following the same timeline as single-family home permits.

Topics ✓ HousingSupports HousingBill mandates ADUs on single-family lots, increasing housing supply and supporting affordable housing development.90% confidence

Sub-Topics Zoning

in committee · Iowa · Senate Feb 19, 2026

SSB 3152: A bill for an act relating to county zoning ordinances governing residential buildings.

This bill (SSB 3152) limits county zoning authority over residential construction in unincorporated areas. It prohibits county boards from restricting the construction or development of residential buildings, except for regulations necessary for safety (e.g., fire codes or structural integrity). The law defines "residential building" to include single-family homes, townhouses, and small apartment buildings (up to 12 units per building), but does not allow counties to impose rules that would hinder housing development. This change directly affects county boards of supervisors and developers working outside city limits in Iowa.

Topics ✓ HousingSupports HousingRemoves zoning barriers for residential construction, enabling more housing development including multi-unit buildings, supporting affordable housing access.95% confidence

Sub-Topics Property Development Zoning

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passed · Iowa · Senate Mar 4, 2026

SF 2442: A bill for an act relating to county zoning ordinances governing residential buildings.

This bill (SF 2442) limits county zoning boards' authority over residential construction in unincorporated areas. It prohibits counties from restricting the building or development of residential properties - defined as single-family homes, townhouses, and small apartment buildings (up to 12 units per building) - except for regulations necessary to protect life or property safety. Counties may no longer impose rules on residential construction for non-safety reasons, such as limiting building density or lot coverage. The law directly affects homeowners, developers, and county zoning boards in rural and unincorporated regions of Iowa. It updates existing zoning authority to prioritize construction access while maintaining safety-based regulations.

Topics ✓ HousingSupports HousingRemoves non-safety zoning barriers for residential development, enabling more housing supply (including small apartments) and increasing affordability potential.90% confidence

Sub-Topics Property Development Zoning

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introduced · Iowa · House Feb 24, 2026

HF 2659: A bill for an act establishing an affordable housing task force.

HF 2659 creates an Iowa affordable housing task force to study how state and local regulations impact housing costs. The task force will examine zoning, building codes, permitting processes, and funding mechanisms affecting affordable housing development, specifically looking at whether regulations provide public benefits proportional to their cost impact. It requires a diverse membership including state agency representatives, housing developers, local officials from cities and counties of varying sizes, housing nonprofits, and legislative members. The task force must submit a report with recommendations to reduce regulatory barriers by December 1, 2026, while maintaining public health and safety standards.

Topics ✓ HousingSupports HousingCreates affordable housing task force to study regulations affecting housing costs, aiming to identify public benefits vs. cost impacts to advance affordable housing policy.85% confidence

Sub-Topics Affordable Housing Housing Finance Zoning

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signed · Iowa · Senate Jun 2, 2026

SF 2378: A bill for an act relating to the ability of property owners to protest proposed changes in zoning districts.

SF 2378 removes a requirement that allowed property owners to block zoning changes by submitting written protests. Specifically, it repeals a provision (Code 414.5) that let owners with 20% of affected property area or 20% of property within 200 feet file protests to stop zoning district changes unless approved by a 3/4 city council vote. The bill directly affects property owners who previously could use this written protest process to challenge zoning amendments. It eliminates the need for cities to seek 3/4 council approval when such protests are filed, streamlining the approval process for zoning changes. The change applies to all zoning district modifications, not just specific uses like shooting ranges.

Topics ✓ HousingSupports HousingRemoves property owner veto power on zoning changes, facilitating housing development approvals aligned with affordable housing policies.85% confidence

Sub-Topics Zoning

signed · Iowa · Senate Apr 9, 2026

SF 2369: A bill for an act relating to county and city regulation of accessory dwelling units.

This bill requires Iowa counties and cities to allow at least one accessory dwelling unit (ADU), or secondary home, on the same lot as a single-family residence in areas where single-family homes are permitted. It sets clear size limits: ADUs cannot exceed 1,000 square feet or 50% of the main home’s size (excluding unfinished basements), and defines "size" to exclude garages and decks. The bill also restricts local governments from banning ADUs solely due to historic preservation rules - ADUs in historic districts can only be limited if a commission documents they clash with the area’s historical character. This directly affects homeowners in single-family zones seeking to build or rent out secondary living spaces.

Topics ✓ HousingSupports HousingMandates ADU allowances to increase housing supply and affordability on single-family lots, directly advancing housing development goals.95% confidence

Sub-Topics Historic Preservation Renters Zoning

in committee · Iowa · House Feb 20, 2026

HF 2312: A bill for an act establishing an affordable housing task force.

HF 2312 creates an affordable housing task force to study state and local regulations that increase housing costs, focusing on zoning, building codes, permitting processes, and funding mechanisms. The task force, composed of agency representatives, housing developers, city/county officials, and legislators, will examine how these rules impact affordability while balancing public health and safety. It must submit a report by December 1, 2026, with recommendations to reduce regulatory barriers for affordable housing development. The bill directly affects housing developers, local governments, and state agencies by requiring them to participate in this review process.

Topics ✓ HousingSupports HousingCreates task force to study and reduce regulatory barriers (zoning, codes) increasing housing costs, aiming to improve affordability through recommendations.95% confidence

Sub-Topics Affordable Housing Housing Finance Zoning

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died · Iowa · House Mar 5, 2026

HF 2252: A bill for an act relating to county and city regulation of accessory dwelling units.

HF 2252 requires Iowa counties and cities to allow at least one accessory dwelling unit (ADU), like a backyard cottage or basement apartment, on single-family residential lots where such homes are permitted. The bill sets size limits (max 1,000 square feet or 50% of the main house, excluding unfinished basements) and prohibits local governments from imposing stricter rules on ADUs in communities with shared ownership (like condos) than on standard single-family homes. It also modifies historic district regulations, requiring preservation commissions to formally justify any ADU restrictions based on historical significance. This directly affects homeowners seeking to build ADUs, local zoning authorities, and historic preservation boards.

Topics ✓ HousingSupports HousingMandates ADU allowances on single-family lots, increasing housing options and affordability without new construction, directly advancing housing development goals.95% confidence

Sub-Topics Historic Preservation Zoning

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in committee · Iowa · Senate Feb 17, 2026

SSB 3070: A bill for an act relating to county and city regulation of accessory dwelling units.

This bill requires Iowa counties and cities to allow at least one accessory dwelling unit (ADU) - a secondary home on the same lot as a primary residence - in zoning districts where single-family homes are permitted. It sets size limits (max 1,000 sq ft or 50% of the main house size, excluding unfinished basements, garages, decks, and unheated porches) and restricts local governments from banning ADUs solely due to historic preservation rules unless a commission documents specific historical incompatibility. Homeowners seeking to build ADUs and local governments creating zoning rules are directly affected. The bill clarifies that historic district restrictions must be justified by a commission’s written determination, replacing prior broad exemptions.

Topics ✓ HousingSupports HousingMandates ADUs in single-family zones, increasing housing supply and affordability while removing local barriers to development.95% confidence

Sub-Topics Historic Preservation Zoning

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in committee · Iowa · Senate Feb 18, 2026

SF 2091: A bill for an act relating to the ability of property owners to protest proposed changes in zoning districts.

This bill repeals a provision (Code section 414.5) that allowed property owners to submit written protests against proposed zoning district changes. Specifically, it removes the requirement that city councils must obtain a 3/4 vote to approve zoning changes if 20% of affected property owners file a written protest before a public hearing. The bill directly affects property owners who previously could challenge zoning changes through this protest mechanism. It eliminates this specific procedural step, meaning zoning changes would no longer require the 3/4 council vote if a protest is filed. The bill does not change other zoning approval processes, such as the requirement for shooting range modifications.

Topics ✓ HousingSupports HousingBill removes property owner protest requirement for zoning changes, facilitating faster approval of housing developments and aligning with housing supply goals.85% confidence

Sub-Topics Zoning

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