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HF 947

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

2025-2026 Regular Session

HF 947 - Accessory Dwelling Unit Regulation OverviewBill Number: HF 947 Title: A bill for an act relating to county and city regulation of accessory dwelling units. Status: Withd

Withdrawn.
#citygovernment #countygovernment #housing #zoning
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Bill Summary · HF 947

HF 947 - Accessory Dwelling Unit Regulation

Overview

Bill Number: HF 947
Title: A bill for an act relating to county and city regulation of accessory dwelling units.
Status: Withdrawn
Introduced: March 12, 2025

Purpose and Intent

The purpose of HF 947 was to establish statewide standards and limitations on how counties and cities can regulate accessory dwelling units (ADUs). The bill aimed to encourage the development of ADUs as a means of increasing affordable housing options and providing more flexible living arrangements for families.

Key Provisions

  • Prohibits counties and cities from banning the construction of ADUs on single-family residential lots
  • Limits the maximum size of an ADU to 800 square feet or 75% of the primary dwelling's size, whichever is smaller
  • Requires counties and cities to allow ADUs to be used as independent living quarters, including for rental purposes
  • Prohibits counties and cities from imposing owner-occupancy requirements for properties with ADUs
  • Allows ADUs to be exempt from minimum lot size, setback, and off-street parking requirements in certain circumstances

Affected Parties and Impacts

This bill would have primarily impacted homeowners, local governments, and the housing market. By limiting local regulation of ADUs, the bill aimed to make it easier and more affordable for homeowners to construct additional living units on their properties. This could have increased the overall supply of housing, potentially improving affordability. However, local governments may have opposed the bill's restrictions on their zoning and land use authority.

Procedural and Timeline Considerations

HF 947 was introduced in the state legislature on March 12, 2025 but was ultimately withdrawn before receiving a full vote. The bill did not progress beyond the initial introduction stage. As a withdrawn bill, it did not become law and did not have any further legislative action or impact.

Compiled from official sources — confirm details with the bill’s official record.

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