The Withington Estate, also known as the Heathcote Farm, is a 12.5-acre (5.1 ha) farmstead located on Spruce Lane near the Kingston section of South Brunswick in Middlesex County, New Jersey.

The farm is adjacent to the Cook Natural Area and the Heathcote Brook.

In addition to the main residence, a stone barn and carriage house contribute to the property.

When the project was abandoned in 1852, the property became the country estate of Isaac Chandler Withington, the original owner.

The two and one-half story brownstone building was designed and built by two prominent architects from New York City, Gamaliel King and John Kellum.