Investment Building+ expand detail
Washington, D.C., USA
540,000 square feet / 50,000 square meters
The Investment Building project includes the renovation a 1923 Beaux-Arts office building and an addition. Though a modest structure for its time, the original building had highly detailed limestone facades. This project preserved the historically important facades while transforming the building’s interiors into efficient and commodious modern office spaces. The building contains 13 office floors, including one in an English basement and three additional below-grade floors for parking. The offices surround two superimposed interior atriums of six and seven stories.
The Investment Building retains the name of the original structure and its 15th Street and K Street facades. New construction adds two stories to the existing building, bringing the height of the entire structure to 12 stories. These additional floors are set back and massed proportionally to minimize their appearance when viewed at a distance. A new canopy marks the building’s main entrance on the center of K Street.
The vertically stacked and interconnected interior atriums provide additional perimeter office space to the building. Both are finished in light anigre wood and have projecting bays and balconies. The lower atrium is crowned with a glowing glass ceiling. The upper atrium floor is the reception for floors six through 12. A metal-and-glass staircase connects floors six to 10 and the atrium terminates in a 60-foot diameter tension truss skylight. The atriums give the Investment Building’s interior mobility.