Andrew Mellon Building

McCormick Apartments
McCormick Apartments in 2019
Location1785 Massachusetts Avenue, NW, Washington, D.C.
Coordinates38°54′33″N 77°2′30″W / 38.90917°N 77.04167°W / 38.90917; -77.04167
Built1915 (1915)
ArchitectJules Henri de Sibour
Architectural styleBeaux Arts
NRHP reference No.73002100
Significant dates
Added to NRHPApril 3, 1973
Designated NHLMay 11, 1976

McCormick Apartments, also known as Andrew Mellon Building, Mellon Apartment, or 1785 Massachusetts Avenue Northwest, is a landmark apartment building on Embassy Row in Washington, D.C., whose inhabitants once included Andrew W. Mellon. It is the home of the American Enterprise Institute.