Adams-Mason Houses: This historic landmark consists of two Federal style row houses in Georgetown.

The Adams-Mason Houses are located in the Georgetown Historic District, between the C&O Canal and M Street NW. This historic landmark consists of two Federal style row houses at 1072 and 1076 (sometimes referred to as 1074) Thomas Jefferson Street NW. However, the house at 1072, completed by Thomas Adams around 1810-12, is technically the Adams-Mason House and stands out among the other row houses as one of the last remaining clapboard houses in the neighborhood. The houses surrounding it, including 1076, which is connected via a central brick addition (dating to the early 20th century), were built around the same time in the early 19th century, but have brick exteriors. The Adams-Mason House (1072) is two and a half floors and has a gable roof with a dormer. The adjacent house at 1076 is also two and a half floors and has a gable roof with a dormer. However, it is taller than its neighbor. It is also a bit more elaborate, with larger multi paned windows, lintels with keystones over the windows, and a fanlight over the front entryway. Carriage maker George W. Mason bought both houses in the late-19th century, and the Mason family resided here until the 1960s. 1072 now houses two condominiums and 1076 is the location of Hartman-Cox Architects, a longtime Washington firm. DC Inventory: January 23, 1973 (Joint Committee on Landmarks)

Within the Georgetown Historic District