The Vail–Trust House is a historic building located at 255 Greenbrook Road in Green Brook Township, Somerset County, New Jersey.

It was added to the National Register of Historic Places on October 7, 2008, for its significance in architecture.

[3] The house site is on an 80-acre (32 ha) property that was acquired by Stephen Vail (1710–1777) on May 20, 1747, from the estate of Gideon Mortall.

In 1792, it passed to his son, Peter Vail (1764–1842), and is about when the oldest section of the house was built.

In 1876, he contracted a carpenter, John Runyon of Dunellen, to build the two-story center section.