The bill amends RCW 36.70A.130 to extend the comprehensive plan revision schedule for certain local governments in Washington State. It allows cities and 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. Instead, these smaller municipalities can participate in a partial review, provided they update their critical areas regulations and certain elements of their plans. The bill also establishes new deadlines for comprehensive plan reviews, with specific dates set for various counties, and allows for early reviews and potential grants for those who choose to begin the process ahead of schedule.

Additionally, the bill includes provisions for counties and cities to report on their implementation progress five years after their comprehensive plan reviews, particularly focusing on housing affordability, permit processing timelines, and greenhouse gas reduction efforts. It mandates that any local government required to include a climate change and resiliency element in its comprehensive plan must update its transportation element and incorporate this new element by the first implementation progress report if funding is available by the specified deadline. The changes aim to streamline the planning process while ensuring compliance with state requirements.