DHS Headquarters at St. Elizabeth’s Hospital, Washington, DC

DHS Headquarters at St. Elizabeth’s Hospital, Washington, DC

The General Services Administration has commenced work on the headquarters for the Department of Homeland Security in Washington, DC on the former site of the historic St. Elizabeth’s Mental Hospital. The 4 million square foot project is the largest undertaking since the Pentagon during World War II, at a construction cost of 4 billion dollars.

Willow Design is a subcontractor to all three of the large prime architectural firms as the Service Disabled Veteran Owned Small Business ( SDVOSB ) component. Willow Design is providing design and restoration architectural services for forty-six existing structures, including windows, doors, roofs, and façade restoration among other tasks.

Willow Design has photographed, surveyed and documented for repair over 1,200 windows in the main 200,000 square foot “Center Building” (shown in photo). Willow Design has an additional 1,700 windows to survey and document for repair. The St. Elizabeth’s Hospital, dating from 1874, had been closed and “mothballed” since 1985. During the past twenty five years, water penetration and vegetation had deteriorated many windows requiring an in- depth examination of each window to comply with the Secretary of the Interior’s guidelines for restoration on historic structures.

Survey work for the roofs and façade began in early September. Façade survey consists of utilization of a field TPAS (Tablet PC Annotation System) station which utilizes a tablet pc, autoCAD, & a digital camera to facilitate field investigation and annotation of existing building elevations. Roof surveys will be performed utilizing the TPAS system as well as lifts to gain roof access for measuring and documenting existing historical details which will be restored to original condition.

Willow Design is working under the direction of the nationally recognized historic restoration firm of Goody Clancy of Boston. In early 2011, Willow Design began work on the new structures for DHS being designed by the Portland Oregon based firm of Zimmer Gunsel Frasca.

GSF: 4 Million SF
Total Cost: 4 Billion
Design Completion: 2012