In 1993, Louis Bacon bought a mostly undeveloped New York island; four years later, he protected nearly 90% of its 450 acres

Robins Island is an undeveloped marine island of approximately 450 acres, situated between Great Peconic Bay and Little Peconic Bay in the Town of Southold, Suffolk County, New York, according to a Coastal Fish and Wildlife Habitat Assessment filed by the New York State Department of State, which describes it as one of the few undeveloped marine islands left in the state.

When Louis Bacon bought Robins Island in 1993, according to The Nature Conservancy, he took steps to preserve it. Four years later, he signed a conservation easement that restricted development across roughly 90% of the island. This left specific small areas exempt from the easement, allowing him to build a private family compound, estate houses, and outbuildings while keeping the vast majority of the land strictly preserved in its natural state. The organization notes this was Bacon's first major conservation purchase and the beginning of later philanthropy that included forest restoration in North Carolina and New Mexico.

While the deal focused on preservation rather than commercial development, the island remains entirely exclusive. Robins Island remains privately owned and closed to the general public, serving as a private family compound and hunting retreat for Bacon and his guests. Bacon's purchase was not a typical private-retreat island buy. Instead, Bacon said he wanted to preserve the island's natural character.

Louis Bacon's 1993 purchase of Robins Island
He grew up visiting the Outer Banks wetlands on family trips from Raleigh, which inspired his lifelong appreciation for wildlife. When the opportunity to buy Robins Island arose, he acted quickly. He bought the island after its former owners filed for bankruptcy.

Robins Island wildlife and habitat: why New York calls it irreplaceable

Robins Island is considered especially significant in New York because it's one of the state's few remaining undeveloped islands. There are four miles of stony beaches; freshwater and saltwater marshes; an island pond and bog; and upland oak-hickory woods covering 400 acres.

Eastern mud turtles, ospreys, piping plovers, and least terns are among the species found on Robins Island. The osprey is notable for nesting in natural structures rather than artificial ones, a feature the New York State Department of State says is unique on Long Island. The New York Natural Heritage Program has documented sea-beach knotweed and salt-marsh spikerush on the island.

What a conservation easement actually does, legally
A conservation easement is a legal agreement between a landowner and a qualifying organization, often a land trust or government agency, that permanently limits what can be done with a piece of land, even after it's sold or inherited. The landowner typically retains ownership and can still use the property, but gives up specific rights, like the right to subdivide, develop, or clear-cut it, in exchange for the land's protected status being legally binding on all future owners. That permanence is the key feature: unlike a private promise or a temporary zoning rule, an easement is recorded on the property's deed, meaning it survives a sale, a death, or a change in local political priorities. Landowners often pursue these agreements for a mix of personal conviction and financial incentive, since conservation easements can also come with meaningful tax benefits in the US.

The Nature Conservancy's records show Bacon entered into the easement in 1997, permanently limiting development on most of the property. The easement runs with the land regardless of future ownership, ensuring the island remains preserved no matter who owns it next.

Robins Island is one of Long Island's rare undeveloped islands. The island's ecosystem is ecologically significant. Nesting shorebirds are especially sensitive to human presence from mid-March to mid-August, when eggs and chicks are vulnerable. Bacon has also helped restore parts of the island, including by replanting trees that had been cut down decades earlier.

Private land conservation lessons from the Robins Island easement

This illustrates how a conservation easement could help prevent land from being developed. The agreement also established an important trend that would be carried out later by Louis Bacon's foundation, which was involved in land preservation and forest restoration.

Looking at the island today, nearly three decades after Bacon signed the 1997 agreement, Robins Island looks much as it did then, a rare example of how a conservation easement can preserve undeveloped land on Long Island for good.