Categories Dupont Circle 1627 21st St. NW Post author By pickering Post date September 5, 2018 No Comments on 1627 21st St. NW 1627 21st st. nw 1627 21st St. is a large townhouse, brick with stone trim and a tile roof. It was built in 1900. ← 2158 Florida Avenue NW → 1107 M St. NW