1789 Massachusetts Avenue, NW - Renovation and Restoration
Location: 1789 Massachusetts Avenue, N.W., Washington, DC
Owner:American Enterprise Institute
Contract Amount:$78.4 Million
Date of Completion:9/19/2016
Grunley renovated and restored 1789 Massachusetts Avenue, NW, Washington, DC to serve as the new headquarters building of the American Enterprise Institute. Located in Dupont Circle, the building is a National Historic Landmark constructed in 1917. The renovation of this five-story historic property involved the excavation, underpinning and construction of a new level below the existing basement. A new central core structure was constructed up through the building and the existing steel frame was reinforced to accommodate a new penthouse level. New mechanical and electrical systems were installed in the existing historic spaces. The façade underwent a complete restoration of the highly detailed limestone work.