310 Mount Holly Road # A, Katonah, NY

$5,500,000

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7

Beds

6

Baths

6,900

Square feet

4.00

Acres

About 310 Mount Holly Road # A

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.

Features of 310 Mount Holly Road # A

MLS® # 976632
Price $5,500,000
Bedrooms 7
Bathrooms 6.00
Full Baths 4
Half Baths 2
Square Footage 6,900
Acres 4.00
Taxes $24,668
Year Built 2026
Type Residential
Sub-Type Single Family Residence
Style Carriage House, Estate, Farmhouse, Modern, Ranch
Status Active

Community Information

Address 310 Mount Holly Road # A
City Katonah
County Westchester County
State NY
Zip Code 10536
Adult 55+ Community No

Amenities

Utilities Electricity Connected, Propane, See Remarks, Trash Collection Private
Parking Attached, Driveway, Garage, Private
# of Garages 5
Is Waterfront No
Has Pool No

Interior

Interior Features First Floor Bedroom, First Floor Full Bath, Breakfast Bar, Built-in Features, Cathedral Ceiling(s), Eat-in Kitchen, Entrance Foyer, Formal Dining, High Ceilings, His and Hers Closets, Kitchen Island, Natural Woodwork, Open Floorplan, Open Kitchen, Primary Bathroom, Recessed Lighting, Walk-In Closet(s), Washer/Dryer Hookup
Appliances Convection Oven, Dishwasher, Dryer, Gas Oven, Gas Range, Microwave, Oven, Refrigerator, Stainless Steel Appliance(s), Washer
Heating Forced Air, Heat Pump, Propane
Cooling Central Air, Ductless, Electric
Has Basement Yes
Basement Storage Space, Unfinished, Walk-Out Access
Fireplace Yes

Exterior

Exterior Frame, Shake Siding

School Information

District Katonah-Lewisboro
Elementary Increase Miller Elementary School
Middle John Jay Middle School
High John Jay High School

Additional Information

Date Listed March 2nd, 2026
Days on Market 22
Short Sale No
RE / Bank Owned No

Listing Details

OfficeSerhant LLC

Listing Map

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