The Growth Management Act (GMA) requires certain counties, and the cities within those counties, engage in planning for future population growth. Counties that have a population of 50,000 or more and, prior to May 16, 1995, had its population grow by 10 percent or more, or, after May 16, 1995, by 17 percent or more in the prior ten years are covered by the GMA. So too, is any county that experiences population growth of 20 percent. Counties with populations under 50,000, that would otherwise be required to plan, can remove themselves from the GMA's comprehensive planning requirements. Counties that do not meet the standards for automatic inclusion in the GMA may choose to be included. Eighteen counties are required to plan, ten have chosen to plan, and 11 are not subject to the full GMA planning requirements.
Whether a county is automatically required to plan under the GMA or voluntarily chooses to, the planning requirements are largely the same. The county must develop a countywide planning policy to provide a framework in which the county and the cities within the county can develop consistent comprehensive plans. The county and cities must adopt development regulations to conserve agricultural lands, forestlands, and mineral resource lands. The county and cities must also adopt urban growth area (UGA) regulations. The county and cities must adopt a comprehensive land use plan and adopt development regulations consistent with the plan.
The comprehensive plan is the central part of the whole planning process. The Legislature established 13 goals to act as the basis of all comprehensive plans. Examples include reducing sprawl, providing for affordable housing, and protecting property rights. The comprehensive plan must address these goals and set out the policies and standards meant to guide the city or county's actions and decisions in the future. Comprehensive plans must contain certain elements, such as a land use element, a housing element, and a capital facilities plan element. These elements must satisfy the requirements for each individual element while fitting within the overall comprehensive plan.
Within 14 months of a county initially becoming subject to the GMA's requirements, the county must adopt a countywide planning policy in consultation with the cities within the county. Countywide planning policies must address UGAs, policies to promote orderly development, policies for siting state or countywide capital facilities, policies and strategies for countywide transportation, policies considering the need for affordable housing, policies for countywide economic development, and the fiscal impact of these policies. When adopting countywide planning policies, federal agencies and Indian tribes may participate in and cooperate with the plan-adoption process.
Every eight years, a county, or county that is planning under the GMA, must review and revise its comprehensive plan and development regulations to ensure the plan and regulations comply with the requirements of the GMA. This review and revision requires legislative action from the county or city. The county and cities must establish a public participation program that provides notice to various interested or impacted individuals and organizations, including Indian tribes, who can become involved in the process. The county and cities may generally only consider updates to the comprehensive plan once a year. The county must also update its designated UGAs.
The eight-year reviews and revision deadlines are staggered for counties as follows:
Each of these counties, and the cities within those counties, must update their comprehensive plans every eight years after the current deadline.
Before adopting a comprehensive plan, or an amendment to a comprehensive plan or development regulation in the comprehensive plan, a city or county must notify the Department of Commerce (Commerce) at least 60 days prior to the final adoption of the plan.
Comprehensive plans must be reviewed and revised every ten years. The deadline for the review and, if necessary, revision of the comprehensive plans of King, Kitsap, Pierce, and Snohomish counties, and the cities within those counties, is extended by six months to December 31, 2024.
Counties planning or choosing to plan under the GMA that have a population of 200,000 and a population density of at least 100 people per square mile on or after April 1, 2021; and have grown by an annual rate of 1.75 percent or more and have a population density of at least 75 people per square mile on or after April 1, 2021, or both; as well as cities with a population of more than 6000 people as of April 1, 2021, within counties that satisfy either or both of these criteria, must provide Commerce with an implementation progress report five years after the adoption of a comprehensive plan. Once a county meets either or both of these requirements, the implementation progress report requirements remain in effect even if the county no longer meets either or both criteria.
Commerce must develop guidelines for the criteria and measures for counties and cities to use in the implementation progress report. The guidelines must address:
If a county or city required to provide an implementation progress report has not implemented any specifically identified regulations or legislative or administrative actions necessary to implement the changes included in the most recent update to the comprehensive plan by the due date for the implementation progress report, then the county or city must identify the need for such changes or actions in the report. The county or city must adopt a work plan to implement necessary regulations, changes, or legislative or administrative action identified in the progress report and complete all work necessary for implementation within two years of submission of the report.