Categories Dupont Circle 1627 21st St. NW Post author By pickering Post date July 28, 2018 No Comments on 1627 21st St. NW 1627 21st st. 1627 21st St. is a large three-story townhouse, brick with stone trim. It was built in 1900. ← 1706 21st St. NW → 1617 21st St. NW