The Apollo

Unobstructed in Structure: Apollo 52 provides open space for tech tenants

Located in Seattle’s South Lake Union neighborhood, Block 52 is one of 11 buildings serving as Amazon’s headquarters. The 12-story, 317,000-sf office building has four levels of below-grade parking, and ground-level retail space. All of the above-grade levels contain a composite steel-framed floor system, while the below-grade base is comprised of concrete core walls and post-tensioned concrete slabs.

Significantly larger floor plates on the first floor accommodate the building’s extended podium. Above the podium, the north, south and east sides of the building step back, creating a green-space roof deck at the fourth floor for tenants.

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Seattle, Washington
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Square Feet:
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Commercial, High Rise / Performance Based Design
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Primary Material:
Concrete, Steel

Project Highlights

  • LEED Gold Certification & Finalist in City of Seattle’s Design Review Program, People’s Choice
  • Steel transfer girders designed by DCI provide unobstructed space on the ground-floor level, which is a highly desirable building element for tech tenants
  • Thicker mat at Level P4 accounts for hydrostatic pressure of the site’s high water table and includes waterproof concrete

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