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Project Outline

AECOM, the corporate parent of EDAW/ENSR, has a companywide initiative to create a more sustainable organization. When the Seattle office began their search for a new office in the area, the initiative was essential to management's decision on the location. One of their first priorities was to choose an office building which is LEED certified and have their new space within the building LEED certified as well. The historic Dexter Horton Building was a perfect fit as it is downtown, close to services, clients and public transportation. It is a registered historic building and is LEED-EB certified.


Kidder Mathews' Sustainability Practice consulted with EDAW/ENSR to obtain LEED for Commercial Interiors program. The priorities for the office build-out were to maximize natural light, preserve existing historic elements of the building and utilize refurbished or recycled materials where possible. The many windows and unique layout of the building created a variety of opportunities for natural light. Because of the narrow layout, desks were placed towards the middle of the open office layout and circulation was kept on the exterior to fill the entire office with natural light. All service related areas were purposely kept off the window walls to insure natural light. Several of the multiple occupancy spaces, such as the lunchroom, were located in the brightest corner of the floor. All conference rooms utilized glass walls to insure natural light throughout spaces.

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Services Provided

  • Green Building Consulting
  • LEED Process Administration