William Floyd Estate

The Old Mastic House viewed from fields on the southern portion of the William Floyd Estate

Learn and Explore

A Walk Through Time

Enjoy a walk through time when you visit the William Floyd Estate. The Estate was at the center of the Floyd Family's life for more than 250 years and the ancestral home, grounds, outbuildings, and family cemetery help tell the story of the continual use, change, and adaptations that took place here in Mastic, New York.


The William Floyd Estate, which was authorized as an addition to Fire Island National Seashore, is located on the mainland of Long Island. Two hundred and fifty years of history are preserved at the Estate.

From Memorial Day to Veterans Day, visitors can explore the 25-room "Old Mastic House" and the grounds, including twelve outbuildings, the family cemetery, and 613 acres of forest, fields, marsh, and trails. 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.

William Floyd

William Floyd, a signer of the Declaration of Independence, was born in the house in 1734. In 1976 William Floyd's great-great-granddaughter, Mrs. Cornelia Floyd Nichols, and her children donated the house to the National Park Service.

Of the four New Yorkers who signed the document, his is the only house still standing and open to the public.


Come #FindYourPark at the William Floyd Estate

  • Take a tour of the Old Mastic House, offered every half-hour from 10:00 am to 4:00 pm every Friday through Sunday and on holidays from Memorial Day to Veterans Day. Explore 25 rooms and more than 250 years of American history on an hour-long tours.
  • Discover the fields, forests, and marshes or explore the family cemetery on a special program.
  • Join the Annual Tri-Hamlet Day Celebration (early June)

Exhibits are available throughout the house, including historical photographs of the William Floyd Estate and the Floyd family. The Old Mastic House is filled with furnishings accumulated by eight generations of Floyd family members.

Open Friday through Sunday and holidays from Memorial Day to Veterans Day.

For more information please call 631-399-2030.


Last updated: May 7, 2018

Contact the Park

Mailing Address:

120 Laurel Street
Patchogue, NY 11772



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