The bill amends RCW 36.70A.130 to improve the review and revision process for comprehensive land use plans and development regulations in Washington State. It allows smaller cities and towns to opt out of full reviews while still requiring updates to critical areas regulations and certain elements of their comprehensive plans. A key focus of the bill is the protection of critical aquifer recharge areas, stipulating that revisions to urban growth areas must not lead to a net increase in these areas. The legislation also establishes a structured timeline for reviews and revisions, mandates public participation programs, and encourages jurisdictions to seek technical assistance.

Additionally, the bill requires cities and counties to develop a work plan for implementing necessary regulations and land use changes identified in an implementation progress report, with a two-year deadline for completion. Jurisdictions must also review and potentially revise their comprehensive plans to include a climate change and resiliency element by December 31, 2024. Furthermore, they are tasked with updating their transportation element and incorporating the climate change element into their comprehensive plans, contingent upon the appropriation and distribution of funds by December 31, 2027. Overall, the bill aims to ensure that land use planning is responsive to growth while prioritizing environmental protection and climate considerations.