799 9th Street is a ten-story Class A office building in Washington, D.C. Located in the East End of Washington, D.C. bordering the Penn Quarter, Chinatown and Mount Vernon neighborhoods, 799 9th is at the center of business and entertainment. Constructed in 2012, this property offers a total area of 204,000 rentable square feet of office space and typical floor sizes average 21,000 square feet.