400 Westlake

Lewis is currently underway on this sixteen-story, 269,000-gross-square-foot office building that reuses the facade of the two-story Firestone Building, a circa-1929 Seattle Landmark.

When complete, 400 Westlake will be the world’s greenest office building of its size, following the “20 by 2020 Challenge” as well as Seattle’s Living Building Pilot program Petal Certification (energy, beauty and place petals). The energy petal will be achieved through rooftop photovoltaics and funding for an offsite photovoltaic array to meet the 105% requirement.

The office and commercial space totals 197,935 square feet plus 8,500 square feet of retail, 241 bike stalls and parking below grade for 63 cars.

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Seattle, Washington


Martin Selig Real Estate


Perkins + Will


Pursuing the 20 by 2020 Challenge and Seattle's Living Building Pilot program