Capital One Headquarters – Block B

Capital One Block B is part of Capital One’s redevelopment plan of a 26-acre campus. Its site is located within less than a mile from the Metro Station in McLean, Virginia. The campus has been divided into several blocks and is expected to feature office spaces, retail, a new residential development, Capital One’s headquarters and a conference center.

Block B was the first building constructed on the campus and stands 470´ tall for a total of 975,000 square feet office building space. It houses the company’s headquarters and became the tallest building in the region at the time of its completion in 2018.

Enclos was assigned to complete the tower’s curtainwall, podium, and lobby which is subdivided into three phases. The curtainwall consists of 265,000 square feet of glass and an aluminum unitized curtainwall system with fly-by units at two corners of the building. The podium features 110,000 square feet of curtainwall that is primarily zinc and aluminum panels. The system that Enclos installed in the lobby is 9,300 square feet of steel curtainwall with an architecturally exposed structural steel (AESS) serpentine canopy. Units were manufactured and assembled at Enclos’ shops in Chester, Virginia and Baltimore, Maryland.



Facade Area:

385,000 sq ft


McLean, VA


headquarters, office


470 ft


Capital One Bank

General Contractor:

Davis Gilford Joint Venture




Thornton Tomasetti

Facade Consultant:

Curtainwall Design Consulting


Juror's Citation Award, Commercial Architecture Category
AIA Northern Virginia Chapter, 2019

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