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William Floyd House

  • Also Known As: Old Mastic House also William Floyd Estate

  • Travel Genus: Sight
  • Sight Category: Building

A Sense of Place

Two hundred and fifty years of history are preserved at the William Floyd Estate, which contains architectural features and artifacts from three centuries of American life.

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 Revolutionary War general and a signer of the Declaration of Independence, was born in the house in 1734. In 1977, the Floyd family donated the contents of the house to the National Park Service, and transferred the remainder of the property to the National Park Service in 1991.

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.Interpretive programs include guided tours of the house and cemetery. Restrooms are available by the parking area. - NPS



Y/M/D Person Association Description Composition Food Event
Y/M/D Person Association Description Composition Food Event
1720/00/00 Nicoll Floyd Home Old Mastic, a two-story, shingled, wood framed house with three rooms on each floor is built for Nicholl Floyd
1734/12/17 William A Floyd Born William Floyd is born at home
1762/10/04 Nicoll Floyd II Born Nicoll Floyd is born in Mastic, Brookhaven
1857/00/00 John G Floyd Sr restyles the front of the house, adding the large porch, the cornice and other details in the Greek Revival style

Data »

Particulars for William Floyd House:
Historic Use Agricultural fields
Historic Use Agricultural outbuildings
Area of Significance Agriculture
Area of Significance Architecture
Criteria Architecture-Engineering
Sight Category Building
Owner Federal
Architectural Style Georgian
Criteria Historic Event
Area of Significance Military
Level of Significance National
Criteria Person
Historic Use Plaza
Area of Significance Politics-government
Historic Use Single dwelling

US National Registry of Historic Places Data »

Accurate at time of registration: 15th October 1980

Registry Name: Floyd, William, House
Registry Address: 20 Washington Ave.
Registry Number: 71000066
Resource Type: Building
Owner: Federal
Architect: unknown
Architectural Style: Georgian
Area in Acres: 611
Contributing Buildings: 11
Certification: Listed in the National Register
Nominator Name: National Seashore
Level of Significance: National
Area of Significance: Military, Politics-government, Architecture, Agriculture
Applicable Criteria: Event, Architecture-Engineering, Person
Period of Significance: 1700-1749, 1800-1824, 1750-1799
Significant Year: 1774, 1776, 1788
Associated People: Floyd,General William
Historic Function: Domestic, Landscape, Agriculture, subsistence
Historic Sub-Function: Single dwelling, Agricultural outbuildings, Agricultural fields, Plaza
Current Function: Landscape
Current Sub-Function: Park

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