The bill aims to address the housing shortage in Washington by prohibiting cities and counties with populations of 30,000 or more from excluding residential uses in areas zoned for commercial or mixed-use development. It establishes specific exceptions to this rule, including areas near industrial zones, oil or gas refineries, historic landmarks, and certain critical areas. Additionally, the bill restricts local governments from requiring mixed-use or ground floor commercial spaces as a condition for permitting residential development in these zones, particularly for publicly subsidized affordable housing projects.

Furthermore, the bill mandates that cities and counties provide an administrative process for applicants to request waivers from ground floor commercial use regulations. It clarifies that local governments are not required to issue building permits if other regulations are not met and allows for the continuation of existing development permits that were issued under previous regulations. The bill also sets a timeline for compliance, stating that local governments must adopt or amend their regulations within 18 months of the bill's effective date, or they will be subject to the new requirements.