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2026 King County Comprehensive Plan update
About the Comprehensive Plan
The plan is the guiding policy document for land use and development in unincorporated King County. It ensures compliance with the goals and requirements of the Growth Management Act. It also lets the County make policy adjustments that address changes in the community's growth and long-term needs.
The Comprehensive Plan covers regional services such as transit, sewers, parks, trails, and open space. The plan also addresses the following services:
- Where homes, offices, or stores can be built.
- How roads, buildings, and trees contribute to the look and feel of neighborhoods.
- Protection of working farms and forests.
- Access to clean water, clean air, and a healthy environment.
Plan updates
King County Code (K.C.C. 20.18.030) allows for annual, midpoint, and 10-year updates to the Comprehensive Plan. The midpoint and 10-year updates consider broader policy changes and revisions to the Urban Growth Area.
Here's what the updates cover:
- Annual update: Permits limited changes, technical corrections, adoption of subarea plans, and adoption of land use changes that do not substantively amend the Urban Growth Area.
- Midpoint update: An optional revision authorized for the fifth year of the 10-year cycle. It's limited to what's included in the motion describing the scope of work.
- Ten-year update: A complete plan review and update, as mandated by Growth Management Act requirements.
Proposed plan
On August 20, 2026, the Local Services and Land Use Committee chair submitted for introduction to the County Council the 2026 annual update to the 2024 King County Comprehensive Plan.
This update includes policy and development regulations to align with proposed changes to the Countywide Planning Policies under Growth Management Planning Council Motion 26-3, relating to technical amendments to the Urban Growth Area (UGA) boundary. It also includes a map amendment that would make a technical amendment to the UGA boundary near the City of Black Diamond.
The materials are available for review here:
Proposed Ordinance 2026-0235
Attachment A – 2026 update to 2024 King County Comprehensive Plan
Public notices
Public notices related to the 2026 Comprehensive Plan and critical areas regulations will be included here.
SEPA Determination
SEPA Review of the Proposed Ordinance is underway. The checklist, public comment information, and threshold determination will be posted when available.
Council review schedule
The schedule for Council’s review is available here.
Review materials
Materials related to the Council’s review will be posted as they become available.
News and updates
News related to the Council’s review of the 2026 update to the 2024 King County Comprehensive Plan will be posted as it is available.
August 21, 2026
Language assistance
Information and assistance in your language is available upon request. Please contact the King County Council at (206) 477-9259 or tera.chea2@kingcounty.gov
Tenemos disponible información y asistencia en su idioma si la solicita. Llame al Consejo del Condado de King al teléfono (206) 477-9259 o envíe un mensaje a tera.chea2@kingcounty.gov
可根据要求以您所使用的语言提供信息及援助。请致电 (206) 477-9259 或发送电子邮件至 tera.chea2@kingcounty.gov，联系 King County 议会
可根據要求以您所使用的語言提供資訊及協助。請聯絡 King County 議會，致電 (206) 477-9259 或電郵至 tera.chea2@kingcounty.gov
Thông tin và hỗ trợ bằng ngôn ngữ của quý vị được cung cấp theo yêu cầu. Vui lòng liên lạc với Hội Đồng King County theo số (206) 477-9259 hoặc tera.chea2@kingcounty.gov
Xog iyo caawimaad ku qoran luuqadaada waxaa la heli karaa kadib marka aad codsato. Fadlan la xiriir Gollaha Degmada King ood kala xariiri karto (206) 477-9259 ama tera.chea2@kingcounty.gov
По запросу предоставляется информация и помощь на вашем языке. Подалуйста, свяжитесь с офисом инспектора округа Кинг, тел.: (206) 477-9259 или по эл. почте: tera.chea2@kingcounty.gov
원하실 경우 귀하의 언어에 대한 정보와 지원을 받으실 수 있습니다. 질문이 있으시면 (206) 477-9259번 또는 tera.chea2@kingcounty.gov 로 킹 카운티 의회 (King County Council) 에 문의하십시오