About Us:

Two hundred and fifty years of history are preserved at the William Floyd Estate. The Old Mastic House contains a variety of architectural features and artifacts from three centuries of American life, the story of the family and their use and enjoyment of this place.

The Estate, which was authorized as an addition to Fire Island National Seashore in 1965, is located on the mainland of Long Island in Mastic Beach, New York. The estate contains the ancestral house, grounds, and cemetery of the William Floyd family. William Floyd, a signer of the Declaration of Independence, was born in the house in 1734. In 1976, the Floyd family donated the contents of the house to the National Park Service.

Between 1718 and 1976, eight generations of Floyds managed the property and adapted it to their changing needs. The family used the house and property in different ways over the years.

In colonial times, the Floyds ran a huge plantation; later, the family turned to business and politics, and the lands were used for outdoor recreational pursuits like hunting and fishing.

The 25-room "Old Mastic House," the twelve outbuildings, the family cemetery and the 613 acres of forest, fields, marsh and trails all graphically illuminate the layers of history.