Categories Mount Vernon Square 440 M St. NW Post author By pickering Post date September 3, 2015 No Comments on 440 M St. NW 440 M st. nw 440 M St. NW is a three-story brick rowhouse, built in 1925 and now divided into condo units. ← 1207 I St. NE → 925 13th St. NW – BF Saul building