A Montgomery County estate that briefly served as former President George Washington's headquarters during the Revolutionary War has been listed for sale for $3.3 million after undergoing extensive renovations to modernize the property. The six-bedroom home at 1901 Pennsylvania Ave., in Fort Washington, was the general's base of operations during the Whitemarsh encampment in late 1777. Thomas Donkin/Donkin Media The kitchen is shown above at 1901 Pennsylvania Ave. in Fort Washington. Thomas Donkin/Donkin Media The estate in Fort Washington was used as a headquarters for General George Washington in November and December 1777. Thomas Donkin/Donkin Media The three-story home sits on about 2.6 acres near the Piszek Preserve in Fort Washington.