Development and construction of the KSC has been an exceptional opportunity for King County to demonstrate the use of sustainable building materials and practices in a uniquely financed building. The most significant achievements were private business partnerships that made possible the extensive use of sustainable building materials and practices.
 
Completed and occupied in September 1999, the King Street Center (KSC) is located at 201 S. Jackson Street, in Seattle WA. The 327,000 square foot building houses 1,500 employees of the County's Department of Natural Resources and Parks and the Department of Transportation. The Center serves as a model and "testing ground" for sustainable practices and materials. With the development of this Center, it is our intent to reduce government and industry aversion to recycled content and their bias towards requiring the use of virgin materials in construction. King Street Center was developed as a vehicle to educate the County and the design, development, and construction industry. The Center's recycled product and sustainable features have received widespread publicity that have created growing interest in the building from the general public and from designers, developers and builders locally and around the world.

Read a case study of King Street Center published by the Cascade Region Green Building Council (external link, Adobe Acrobat format).