One Franklin Square is a high-rise building at 1301 K Street NW, in Washington, D.C, United States. The 64 m (210 ft), 12 story building was completed in 1989, and is the fifth-tallest building in The District, occupying almost the entire north side of the 1300 block of K Street NW across from Franklin Square.The building is owned and managed by Hines Interests.