The DeFreest Homestead is a historic house and barn located in the Rensselaer Technology Park in North Greenbush, New York, United States. The homestead and surrounding land are owned and managed by Rensselaer Polytechnic Institute. It was the original home of Philip DeFreest, one of the first Dutch settlers to arrive in the mid-18th century. The land includes historic buildings typical of a working Dutch farm: a farmhouse restored in 1984 to house the park's administrative offices, and a Dutch barn.