Ballpark Square 99 M St 1
Ballpark Square 99 M St 2
Ballpark Square 99 M St 3

99M Ballpark Square

Located in the Ballpark Square area of the Capitol Riverfront neighborhood, just one block from the Washington Nationals Stadium and Navy Yard metro station, 99M is an 11-story, Class “A” office building with four levels of below-grade parking. The building features prime retail space on the ground floor, a green rooftop terrace, and a club-like fitness facility. Office tenants include the Credit Union National Association (CUNA), Retail Industry Leaders Association (RILA), and Pyxera Global, Inc.

The building super-structure consists of a two-way post-tensioned slab system with a 30’ by 30’ column grid at the perimeter and 40 foot spans from the façade to a central stair and elevator core. The building corners are column-free, utilizing 15 foot two-way cantilevers. Designed for LEED Gold certification, the building utilizes materials and systems that are energy efficient and features a green roof area that allows for storm water storage and filtration.

Project Details


Skanska, Gensler



Square Footage


Year Completed