William Green House, Historical farmhouse in Ewing Township, United States.

The William Green House is a brick farmhouse in Ewing Township with three distinct sections added during different building periods between 1717 and 1830. Each section represents how the structure expanded and evolved over more than a century.

Judge William Green, born in England in 1671, built this residence after settling in New Jersey with his wife Joanna Reeder. The original structure contained a log cabin built by John Severns before 1730 that was eventually demolished but remains an important part of its history.

The farmhouse shows building methods from the 1700s and how settlers constructed their homes using local materials. Its design reflects how people adapted their architecture to the New Jersey environment of that era.

The house stands on land owned by the College of New Jersey and is in a poor state of repair; the college shored up the structure in 2006. It has been considered an endangered historic site for over 40 years, so view it from outside rather than approaching the unstable building.

The house has been listed as one of New Jersey's 10 most endangered historic sites by Preservation New Jersey since 2015, after more than 40 years of concern over its condition. The College of New Jersey, which owns it, shored up the structure in 2006.