Judge Patricia H Clark Children & Family Justice Center

Seattle, WA

This safe, flexible and efficient building supports King County’s long-held goal to reduce the number of juveniles in the justice system and replaces the county’s aging Youth Services Center


  • The first LEED® v4 project for the County
  • 137,000 sq. ft. of courtrooms
  • Approximately 100 juvenile detention beds
  • 10,000 sq.ft. of youth program space
  • Open space design that reconnects the block to the neighborhood

O’Brien360 was part of the design/build team selected by King County for the new Clark Children and Family Justice Center, an extensive project to rebuild a large city block and the current justice facilities located on-site.  Reflecting the new King County Green Building Ordinance, the County requires LEED v4 Gold certification for the project, the first LEED v4 project for the County. O’Brien360 led the integrative process and sustainable building analysis for the design-build team submission for the competition including facilitating greenhouse gas mitigation plans, achieving the high-energy targets of the County and LEED v4, and developing a pathway to achieve the materials requirements (related to LEED v4 and avoiding chemicals of concern). 

Once selected, we facilitated a large eco-charrette with project stakeholders and tracked and reported on progress on sustainability goals and LEED throughout the design. We conducted trainings on the materials requirements for team members and helped research and validate materials selections.  O’Brien360 also worked with the team on LEED v4 design documentation.