Watershed Building

Watershed Building


Three Petals of Sustainability: Watershed acquires Seattle recognition

This seven-story, mixed-use office building in Seattle’s Fremont neighborhood captures and treats more than 500,000 gallons of stormwater each year, thanks to its slanted roof and a set of bioretention planters. The project meets three of the ‘petals’ for City of Seattle’s Living Building Petal Certification: materials, place and beauty.  It also meets requirements for reducing total energy usage by at least 25% and total water usage by 75%.


DCI Engineers was the structural EOR responsible for Watershed’s primary lateral and gravity framing systems. The engineering team also detailed the connections for the exposed steel castellated beams. Integrating castellated beams into the building design saved 20% to 30% in material weight.







Project Highlights

  • Watershed’s roof will capture and treat roughly 200,000 gallons of stormwater while bioretention planters will collect and treat about 300,000 gallons of runoff from the nearby Aurora Bridge.
  • Features exposed castellated steel beams and floor-to-ceiling glass.




    2021 AISC IDEAS2 Merit Award

  •  2021Architizer A+ Award – Popular Choice Award
  • Living Building Petal Certified
  • Salmon Safe 2019 Hero of the Salmon
  • 2017 NAIOP – Washington Office Development of the Year
  • Seattle’s 2030 District 2017 Vision Awards – Award for Water








Seattle, Washington
Square Feet: 
Primary Material: 
Sustainable Design

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