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Height: Architectural 139 m / 456 ft
Height: To Tip 139 m / 456 ft
Floors Above Ground 36
Floors Below Ground 2
Tower GFA 61,086 m² / 657,524 ft²


Official Name One Union Square
Structure Type Building
Status Completed
Country United States
City Seattle
Street Address & Map 600 University Street
Postal Code 98101
Building Function office
Structural Material steel
Completion 1981

Companies Involved

Design TRA Architects
Structural Engineer
Design Skilling, Helle, Christiansen, Robertson
Main Contractor Hoffman Construction Company

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