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 framed by classic white horse fencing, structures that trace their roots to the early 19th century, and the unhurried feeling of a European farmstead. Together they form the foundation for a multi-building compound just an hour from NYC, within the Katonah-Lewisboro School District.
The property comprises approx. 3,300 sq ft across three existing structures - the Barn, Carriage House, and Milk House - alongside a gutted Main House ready to be replaced with a custom primary residence. This grandfathered multi-structure configuration, no longer possible under current zoning, offers rare flexibility for living, hosting, and creative work across a thoughtfully composed compound. Plans for a modern farmhouse of approx. 3,600 sq ft are available as a point of departure, and a seven-bedroom septic is already approved. The property's architect and builder are on hand, or a buyer may engage their own design and team.
The Barn, featuring historic details like wavy glass diamond-paned windows and classic barn doors, includes a fully renovated legal two-bedroom apartment above - with updated kitchen and full bath - and an unfinished studio below with half bath and laundry, suited as a wellness space, creative studio, or lounge. New electrical, Bosch HVAC, mini-splits, and whole-house generator are in place. A 26-foot glass wall, designed to maximize light and meadow views, is fabricated and ready for installation.
Reimagined from the foundation up, the Carriage House blends historic craftsmanship with contemporary architecture - original hand-hewn beams, antique brick floors, and wavy glass windows alongside new large-scale commercial glass, cedar shake siding, a standing seam metal roof, and updated electrical and HVAC - ready to be finished as a home office, creative studio, or guest cottage. Completion plans for both are approved by the Town of Bedford.
The charming Milk House, compact and rich in character, features antique brick floors and original wavy glass windows beneath a new standing seam metal roof - ideal as 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. A gravel motor court lends an 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 creative pursuits, each in its own dedicated setting, in one of the Hudson Valley's most beautiful and sought-after enclaves.
Construction drawings and approved completion plans available upon request.
For sale
$1,995,000
310 Mt Holly Road, Katonah, NY 10536
7beds
3,300sqft
Single Family Residence, Residential
Built in 1850
4 Acres Lot
$-- Zestimate®
$605/sqft
$-- HOA
What's special
Historic stone wallsClassic white horse fencing
- 8 days |
- 3,506 |
- 150 |
Zillow last checked: 7 hours ago
Listing updated: March 27, 2026 at 01:39pm
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#: 947648
Tour with a local agent
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 7
- Bathrooms: 6
- Full bathrooms: 4
- 1/2 bathrooms: 2
Heating
- Baseboard, Electric
Cooling
- Ductless, Electric
Appliances
- Included: Dishwasher, Dryer, Freezer, Gas Oven, Gas Range, Microwave, Refrigerator, Stainless Steel Appliance(s), Washer, Gas Water Heater
- Laundry: Washer/Dryer Hookup
Features
- Built-in Features, Eat-in Kitchen, Entrance Foyer, Natural Woodwork, Open Floorplan, Open Kitchen, Pantry, Primary Bathroom, Recessed Lighting, Smart Thermostat, Storage
- Attic: Full
Interior area
- Total structure area: 3,300
- Total interior livable area: 3,300 sqft
Property
Parking
- Total spaces: 7
- Parking features: Covered, Driveway, Garage
- Garage spaces: 4
- Carport spaces: 3
- Has uncovered spaces: Yes
Lot
- Size: 4 Acres
Details
- Parcel number: 2000039020000010000009
- Special conditions: None
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Carriage House,Modern
- Property subtype: Single Family Residence, Residential
Materials
- Shingle Siding
Condition
- Actual
- Year built: 1850
- Major remodel year: 2024
Utilities & green energy
- Sewer: Septic Tank
- Utilities for property: Propane
Community & HOA
HOA
- Has HOA: No
Location
- Region: Katonah
Financial & listing details
- Price per square foot: $605/sqft
- Tax assessed value: $89,320
- Annual tax amount: $24,688
- Date on market: 3/26/2026
- Cumulative days on market: 8 days
- Listing agreement: Exclusive Right To Sell
Estimated market value
Not available
Estimated sales range
Not available
Not available
Price history
Price history
| Date | Event | Price |
|---|---|---|
| 3/26/2026 | Listed for sale | $1,995,000$605/sqft |
Source: | ||
| 12/6/2025 | Listing removed | $1,995,000$605/sqft |
Source: | ||
| 6/19/2025 | Listed for sale | $1,995,000+47.8%$605/sqft |
Source: | ||
| 11/30/2023 | Sold | $1,350,000$409/sqft |
Source: Public Record Report a problem | ||
| 7/15/2018 | Listing removed | $1,950$1/sqft |
Source: William Raveis Real Estate #4825466 Report a problem | ||
| 6/26/2018 | Price change | $1,950-2.5%$1/sqft |
Source: William Raveis Real Estate #4825466 Report a problem | ||
| 6/4/2018 | Listed for rent | $2,000+2.6%$1/sqft |
Source: William Raveis Real Estate #4825466 Report a problem | ||
| 3/20/2018 | Listing removed | $1,950$1/sqft |
Source: William Raveis Real Estate #4808319 Report a problem | ||
| 3/1/2018 | Listed for rent | $1,950+11.4%$1/sqft |
Source: William Raveis Real Estate #4808319 Report a problem | ||
| 10/18/2013 | Listing removed | $1,750$1/sqft |
Source: Ginnel Real Estate #3330497 Report a problem | ||
| 10/5/2013 | Listed for rent | $1,750$1/sqft |
Source: Ginnel Real Estate #3330497 Report a problem | ||
Public tax history
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2024 | -- | $89,320 +32.8% |
| 2023 | -- | $67,265 +10.5% |
| 2022 | -- | $60,895 |
| 2021 | -- | $60,895 |
| 2020 | -- | $60,895 0% |
| 2019 | -- | $60,900 |
| 2018 | -- | $60,900 |
| 2017 | -- | $60,900 |
| 2016 | -- | $60,900 |
| 2015 | -- | $60,900 |
| 2014 | -- | $60,900 |
| 2013 | -- | $60,900 |
| 2012 | -- | $60,900 |
| 2011 | -- | $60,900 |
| 2010 | -- | $60,900 |
| 2009 | -- | $60,900 |
| 2008 | -- | $60,900 |
| 2007 | -- | $60,900 |
| 2006 | -- | $60,900 |
| 2005 | -- | $60,900 |
| 2004 | -- | $60,900 |
| 2003 | -- | $60,900 |
| 2002 | -- | $60,900 |
| 2001 | -- | $60,900 |
| 2000 | -- | $60,900 |
| 1999 | -- | $60,900 |
Find assessor info on the county website
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
Nearby schools
GreatSchools rating
- 8/10Increase Miller Elementary SchoolGrades: K-5Distance: 1.4 mi
- 8/10John Jay Middle SchoolGrades: 6-8Distance: 1.3 mi
- 9/10John Jay High SchoolGrades: 9-12Distance: 1.6 mi
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.
Local experts in 10536
- New York
- Westchester County
- Katonah
- 10536
- 310 Mt Holly Road









