500 N. Capitol Street, NW

A project of this scale and magnitude could not have been accomplished without exceptional teamwork.
Bobby R. Burchfield, Co-Partner-in-Charge, McDermott Will & Emery LLP
Washington, D.C.
Boston Properties
230,000 Square Feet
Year Completed: 

Clark transformed the 230,000 square-foot office building at 500 North Capitol Street, NW to prepare for the relocation of new prime tenant, McDermott Will & Emery LLP.

More than a simple renovation, Clark demolished the existing building's interior and façades while making structural revisions to allow for the addition of a new ninth floor and roof deck. The scope of work also included installing a new curtainwall facing North Capitol Street and E Street, NW. The building’s other two sides feature precast concrete with large punched open windows. Additional building improvements include micropile foundations as well as new, state-of-the-art mechanical and electrical systems, and elevators.

McDermott Will & Emery LLP, a premier international law firm, occupies 171,000 square feet of Class-A office space in the new building.


Built to meet the U.S. Green Building Council’s LEED Gold standards for energy efficiency and environmental sustainability, the space features abundant natural light, Energy Star-rated equipment and appliances, new furniture with recycled components, and locally sourced building materials.

WBC Craftmanship Award - Curtain Wall