The bill addresses Washington's housing crisis by promoting the development of detached accessory dwelling units (ADUs) in rural areas, recognizing the need for an additional 1.1 million homes by 2044. It allows counties to authorize detached ADUs on any size lot, even if previously restricted by local policies, as long as they adhere to specific development regulations concerning water usage, sewage capacity, and design compatibility with primary dwellings. The legislation also clarifies definitions related to ADUs and stipulates that population growth from these units will not count towards rural or urban growth targets in comprehensive plans. Counties are required to update their comprehensive plans to incorporate these new provisions during their next scheduled review.

Furthermore, the bill amends existing laws regarding the review and revision of county comprehensive plans and urban growth areas, establishing criteria to ensure that changes do not expand the total surface area of urban growth areas or encroach on designated agricultural or critical lands. It sets deadlines for counties and cities to review their comprehensive plans, with flexibility for smaller jurisdictions. The bill also mandates that counties permitting ADUs revise their planning policies accordingly and emphasizes collaborative countywide planning with cities. Sanctions are included for non-compliance, and the bill encourages participation from federal agencies and tribal governments in the planning process.

Statutes affected:
Original Bill: 36.70A.696, 36.70A.177, 36.70A.130, 36.70A.210