The bill amends RCW 36.70A.130 to extend the comprehensive plan revision schedule for certain local governments in Washington State. It allows cities or towns with populations under 500, not located within 10 miles of a larger city, and with a low population growth rate to opt out of a full review of their comprehensive plans, provided they update their critical areas regulations and certain elements of their plans. The bill also establishes new deadlines for counties and cities to review and revise their comprehensive plans and development regulations, with specific timelines set for different counties based on their populations and growth rates.

Additionally, the bill includes provisions for public participation in the planning process, requiring counties and cities to disseminate information about updates and amendments to their comprehensive plans. It mandates that counties and cities provide implementation progress reports detailing their progress in implementing their comprehensive plans, particularly focusing on housing affordability, permit processing timelines, and greenhouse gas reduction efforts. The bill emphasizes the importance of compliance with the established deadlines to qualify for state grants and financial assistance.