A 2,000-Acre Hudson Valley Estate Is Listed for $90 Million
At its center stands the Mill House, incorporating the 1775 grist mill “Defiance,” constructed by the Livingston family during the Revolutionary era.
Mill Farm in Ancramdale, New York, has come to market at $90 million, listed with James Augustine of Compass. Spanning more than 2,000 acres (≈ 809 hectares) and surrounded on nearly all sides by protected conservation land, it stands among the largest unified working farms within roughly two hours of New York City.
The mill was positioned at a natural drop in Punch Brook Stream, built to harness the falling water that once powered its grinding stones. The water still moves past the stone foundation, visible from inside the house — the same drop that once drove the machinery now reads almost like a private waterfall.
The original mill remains at the core of the house, with later additions extending it into a full-time residence. The current residence incorporates the original mill structure, with modern living spaces added onto the historic stone foundation. Today, the Mill House spans approximately 5,600 ft² (≈ 520 m²) with four bedrooms, retaining its direct relationship to the stream that defined its purpose.
Adjacent to the main house, the former Mill Keeper’s House has been converted into a private movie theatre. A second principal residence, known as Crest Lane, measures approximately 3,500 ft² (≈ 325 m²) and features a windowed living room oriented toward sweeping valley views. The two primary homes are connected by an internal three-mile gravel road system running through fields and woodland.
Of course, the real story is the land.
The estate extends across valley floor and rising elevations, framed on nearly all sides by protected conservation land. Its scale did not happen by accident. Beginning in 1982, financier Daniel Slott assembled the property parcel by parcel, completing 29 separate transactions over more than four decades to consolidate what is now a single, uninterrupted working farm.
Mill Farm’s 2,000 acres remain primarily devoted to organic-certified hay production — a scale rarely found within two hours of Manhattan.
The property includes eight additional single-family homes, including four newly renovated cottages, each on its own deeded parcel. Rare 18th-century barns — including a Dutch barn — remain in place, alongside agricultural infrastructure supporting ongoing farm operations. An active windmill system supplies water across portions of the estate, while aquifers and tributaries reinforce its long-term viability.
More than 18 miles of drivable internal trails connect forests, fields, and waterways. Three miles of Punch Brook, designated as a New York State trout stream, run through the property. Documented bobcat habitats are maintained in partnership with Panthera.org, and the eastern boundary adjoins a protected bird sanctuary, extending the sense of uninterrupted landscape well beyond the estate’s boundaries.
Mill Farm combines Revolutionary-era industrial history, working agricultural land, and long-term conservation context in a single holding. In a region where large parcels are increasingly fragmented, its continuity — and its direct connection to early Hudson Valley infrastructure — distinguish it within the Northeast market.
All photos belong to the listing agency.
