The Old Stone House is one of the oldest structures in Washington, D.C. The house is also the last pre-revolutionary colonial building in Washington, D.C. Built in 1765, Old Stone House is located at 3051 M Street, Northwest in the city's Georgetown neighborhood. Sentimental local folklore preserved the Old Stone House from being demolished…The Old Stone House is one of the oldest structures in Washington, D.C. The house is also the last pre-revolutionary colonial building in Washington, D.C. Built in 1765, Old Stone House is located at 3051 M Street, Northwest in the city's Georgetown neighborhood. Sentimental local folklore preserved the Old Stone House from being demolished, unlike many colonial homes in the area that were replaced by redevelopment.