The Huff House and Farmstead is a historic property located on River Road at the South Branch Raritan River near the Flagtown section of Hillsborough Township in Somerset County, New Jersey, United States. The Huff House was built in 1842 and was added to the National Register of Historic Places on November 7, 1976, for its significance in agriculture and politics/government. See also National Register of Historic Places listings in Somerset County, New Jersey References Hillsborough Township, New Jersey Houses in Somerset County, New Jersey Farmhouses in the United States National Register of Historic Places in Somerset County, New Jersey Houses completed in 1842 1842 establishments in New Jersey New Jersey Register of Historic Places