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New construction
  • $5,500,000

    310 Mount Holly Road #A, Katonah, NY 10536

    7beds
    6,900sqft
    Single Family Residence, Residential
    Built in 2026
    4 Acres Lot
    $-- Zestimate®
    $797/sqft
    $-- HOA

    What's special

    Bellwether Farm - A Rare Compound Opportunity in the Heart of Bedford Horse Country. Bellwether Farm presents a singular opportunity to create a fully bespoke country estate on Mt. Holly Road, one of Northern Westchester's most coveted addresses in the heart of Bedford-Katonah horse country. Approached along an idyllic country road, the property arrives like a page out of time: four pastoral acres of open meadow, structures that trace their roots to the early 19th century, and the unhurried feeling of a European farmstead - all just an hour from NYC. Bellwether Farm offers something vanishingly rare - the ability to build a primary residence entirely to your own vision, on land already home to a remarkable collection of historic structures. Architectural plans exist for a modern farmhouse of approx. 3,600 sq ft (plus unfinished lower level), featuring dramatic vaulted ceilings, a full wall of glass opening to sweeping meadow views, and clean proportions that sit comfortably within the landscape. The design envisions four bedrooms and three baths, as reflected in the renderings. A seven-bedroom septic is approved and construction drawings are in hand, providing a clear path toward completion. The property's architect and builder are available to collaborate, or a buyer may engage their own design and team. What distinguishes Bellwether Farm is a grandfathered multi-structure configuration no longer achievable under current Bedford zoning. The result is a thoughtfully composed compound comprising approx. 3,300 sq ft across three buildings - the Barn, Carriage House, and Milk House - offering rare flexibility for living, hosting, and creative work that a single-structure residence simply cannot. The Barn, featuring historic details like wavy glass diamond-paned windows and classic barn doors, includes a stylish two-bedroom apartment above and unfinished studio below, suited as a wellness space, creative studio, or lounge. Ready to occupy from day one, the apartment is an ideal base while overseeing construction. The Carriage House, with hand-hewn beams, antique brick floors, and new large-scale commercial glass, awaits final transformation as home office, creative studio, or guest cottage, with living and kitchenette on the main floor and lofted sleeping quarters above. Completion plans for both are approved by the Town of Bedford. The charming Milk House sits quietly apart - perfect for a writer's studio or garden retreat. Once a thriving working farm, the land remains essentially untouched - open pasture, long meadow views, and historic stone walls that speak to generations of quiet, unhurried life. Mature plantings frame an effortless setting for entertaining, future gardens, and pool placement. A gravel motor court lends a graceful arrival that feels entirely of the place. Bellwether Farm is a rare chance to build something entirely your own - a country estate with room for guests, and creativity, each in its own dedicated setting, in one of the Hudson Valley's most beautiful and sought-after enclaves. Renderings shown. Details available upon request.
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    Zillow last checked: 7 hours ago

    Listing updated: March 28, 2026 at 06:20pm

    Listing by:

    Serhant LLC 646-480-7665,

    Samuel Berek 917-239-7018,

    Jake Garay 914-772-2603,

    Serhant LLC

    Source: OneKey® MLS as distributed by MLS GRID,MLS#: 976632MLS Logo

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      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 7
      • Bathrooms: 6
      • Full bathrooms: 4
      • 1/2 bathrooms: 2
      Heating
      • Forced Air, Heat Pump, Propane
      Cooling
      • Central Air, Ductless, Electric
      Appliances
      • Included: Convection Oven, Dishwasher, Dryer, Gas Oven, Gas Range, Microwave, Oven, Refrigerator, Stainless Steel Appliance(s), Washer
      • Laundry: Washer/Dryer Hookup
      Features
      • First Floor Bedroom, First Floor Full Bath, Breakfast Bar, Built-in Features, Cathedral Ceiling(s), Eat-in Kitchen, Entrance Foyer, Formal Dining, His and Hers Closets, Kitchen Island, Natural Woodwork, Open Floorplan, Open Kitchen, Primary Bathroom, Recessed Lighting
      • Basement: Storage Space,Unfinished,Walk-Out Access
      • Attic: See Remarks
      • Has fireplace: Yes
      Interior area
      • Total structure area: 6,900
      • Total interior livable area: 6,900 sqft

      Property

      Parking
      • Total spaces: 8
      • Parking features: Attached, Driveway, Garage, Private
      • Garage spaces: 5
      • Carport spaces: 3
      • Has uncovered spaces: Yes
      Lot
      • Size: 4 Acres
      Details
      • Additional structures: Barn(s), Carport(s), Garage(s), Guest House, Workshop
      • Special conditions: None
      • Horses can be raised: Yes

      Construction

      Type & style
      • Home type: SingleFamily
      • Architectural style: Carriage House,Estate,Modern,Ranch
      • Property subtype: Single Family Residence, Residential
      Materials
      • Shake Siding
      Condition
      • Actual,New Construction,To Be Built
      • New construction: Yes
      • Year built: 2026
      • Major remodel year: 2026

      Utilities & green energy

      • Sewer: Septic Tank
      • Utilities for property: Electricity Connected, Propane, See Remarks, Trash Collection Private

      Community & HOA

      HOA
      • Has HOA: No
      Location
      • Region: Katonah

      Financial & listing details

      • Price per square foot: $797/sqft
      • Tax assessed value: $89,320
      • Annual tax amount: $24,668
      • Date on market: 3/26/2026
      • Cumulative days on market: 6 days
      • Listing agreement: Exclusive Right To Sell
      • Electric utility on property: Yes

        Estimated market value

        Not available

        Estimated sales range

        Not available

        Not available

        Price history

        Price history
        DateEventPrice
        3/26/2026Listed for sale$5,500,000$797/sqft
        Source: OneKey® MLS as distributed by MLS GRID #976632 Report a problem

        Public tax history

        Public tax history
        Tax history is unavailable.

        Monthly payment

        Estimated monthly payment
        All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
        HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
        Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
        See how much you could borrow to make a competitive offer.

        Climate risks

        Neighborhood: 10536

        Getting around

        3 / 100
        Car-Dependent
        5 / 100
        Somewhat Bikeable

        Nearby schools

        GreatSchools rating
        Schools provided by the listing agent
        • Elementary: Increase Miller Elementary School
        • Middle: John Jay Middle School
        • High: John Jay High School

        Source: OneKey® MLS as distributed by MLS GRID. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.

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