Counties required to track and report accessory dwelling unit permits under new regulations

Washington State legislators have introduced House Bill 1345, a significant measure aimed at regulating the construction and placement of accessory dwelling units (ADUs) across the state. Introduced on March 6, 2025, the bill seeks to address the growing need for affordable housing options while ensuring compliance with existing development regulations.

The primary provisions of House Bill 1345 include a mandatory permit fee for ADUs that meet all development regulations. Additionally, the bill imposes a three-year prohibition on obtaining new permits for property owners who fail to seek voluntary compliance after receiving a civil infraction for constructing or placing an ADU without the necessary permits. This measure aims to encourage adherence to local regulations and promote responsible development practices.

Counties allowing detached ADUs outside urban growth areas will be required to track and report the number of permits issued annually. This data will inform updates to comprehensive land use plans, ensuring that local governments account for the actual and projected development of ADUs over the next 20 years. Furthermore, amendments to these plans will be limited to once every five years, providing stability in planning and development.

The bill has sparked notable debates among lawmakers and community stakeholders. Proponents argue that it will enhance housing availability and affordability, particularly in areas where housing shortages are acute. Critics, however, express concerns about potential overregulation and the impact on property rights, fearing that the restrictions could deter homeowners from pursuing ADU projects altogether.

The implications of House Bill 1345 extend beyond housing availability. Economically, it could stimulate local construction industries while also addressing the pressing issue of housing affordability in Washington State. Socially, the bill aims to create more diverse housing options, which could benefit families and individuals seeking affordable living arrangements.

As the legislative process unfolds, the future of House Bill 1345 remains uncertain. Its passage could mark a pivotal step in Washington's approach to housing policy, potentially setting a precedent for similar measures in other states. Stakeholders will be closely monitoring the bill's progress, as its outcomes could significantly shape the landscape of housing development in Washington for years to come.