This 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 at a density of up to 50% more than what is currently permitted, provided that health and safety standards are met.

Additionally, the bill introduces specific provisions regarding energy code compliance for existing buildings being converted to residential use. It stipulates that unchanged portions of buildings previously used for residential purposes are not required to meet current energy codes solely due to the addition of new units, while new units must comply unless certain conditions are met, such as size limitations or energy use intensity documentation. The legislation aims to streamline the process for converting existing buildings into residential units, thereby addressing housing shortages while ensuring safety and compliance with existing standards.

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