The bill amends existing regulations for buildings used for residential purposes in Washington State, specifically targeting code cities and municipalities. It mandates that these cities adopt or amend their development and zoning regulations to comply with new requirements by June 30, 2026. The bill prohibits cities from imposing certain restrictions on housing unit density, parking requirements, and permitting processes for existing buildings designated for residential use. Notably, it allows for the addition of housing units within existing building envelopes, provided that health and safety standards are met, and it limits the ability of cities to impose design standards or deny permits based on nonconformity unless significant detriment to the surrounding area can be demonstrated.

Key insertions in the bill include the requirement for cities to incorporate regulations for buildings in commercial, mixed-use, or residential zones, and the clarification that permitting requirements cannot exceed those generally applicable to residential development. Additionally, the bill specifies that unchanged portions of existing buildings used for residential purposes are not required to meet current energy codes solely due to the addition of new units, with certain exceptions outlined for energy code compliance. Overall, the bill aims to streamline the process for converting existing buildings into residential units, thereby addressing housing shortages in Washington State.

Statutes affected:
Original Bill: 35A.21.440, 35.21.990
Bill as Passed Legislature: 35A.21.440, 35.21.990
Session Law: 35A.21.440, 35.21.990