Sponsor Spotlight: King County Green Tools

King County Green Tools has sponsored many NW EcoBuilding Guild events since King County Green Tools since it started in 2005. We are thankful for their support over the years and most recently for the 2025 NW Green Building Slam!

Our collaborative approach integrates equity for people, economic vitality, and environmental well-being. We actively engage with communities to ensure present needs are met, while benefiting future generations. Our program offers technical assistance, hands-on training, and policy development.

King County Green Tools offers resources for building sustainably, green building certification, recycling construction materials, and more for projects located in the jurisdiction of King County.

• Get the Green Building Handbook here
• Green Building Tools for Builders and Homeowners here
• Compost and Topsoil Calculator here
• Loop Biosolids info here
• Native Plant Nursery List here
• Find Native Plants here
• Rainwater Catchment here
• Backyard Compost Resources here
• Noxious Weed Lookup here
• Chemical-Free Garden and Lawn Resources here
• Builder Resource: Learn about Soils for Salmon