Welcome to GRAY HORSE FARM - Just Updated & Renovated for 2025 luxury living! Recently transformed with a gut-renovated Top of the line chef's kitchen with new cabinets, countertops, backsplash, floor, and high-end appliances. There are six new designer bathrooms, all-new recessed lighting throughout, upgraded 800-AMP electric and utility systems. This grand estate seamlessly blends timeless elegance with modern comforts. A truly iconic Georgian estate nestled in the heart of Upper Brookville, this 17,587 square feet of total living space, this sprawling residence features 9 bedrooms, 9.555+ bathrooms, 10 wood-burning fireplaces, and exquisite architectural details, including vintage millwork, antique hand-painted wallpaper, and Samuel Yellin wrought-iron gates from the JP Morgan estate. Designed in 1924 by renowned architect James W. O’Connor and landscape architect Robert Ludlow Fowler, Gray Horse Farm is where classic architecture meets nearly 9 acres of pristine, equestrian-ready grounds. Perfectly suited for multigenerational living, the estate includes three separate guest/staff quarters (two 1-bedrooms and one 3-bedroom), offering privacy while staying connected. For those who love to entertain and enjoy the outdoors, the estate features a 20' x 55' heated saltwater pool with a pool house that's fully equipped, tennis and basketball courts, and a secret meditation garden you don't want to miss. For the car enthusiast there's a 7-car garage. Equestrian enthusiasts will appreciate the 3-stall stable, multiple paddocks, and run-in horse shed, all designed for top-tier country living. Additional highlights include a whole-house generator, all just 27 miles from Manhattan. Whether you're seeking a premier equestrian retreat or an expansive generational compound, Gray Horse Farm delivers an unmatched lifestyle of luxury, privacy, and prestige. A rare offering close to top universities,marinas, beaches, golf, museums and americana shopping!
Details
MLS #
885874
Listing Type
For Sale
Style
House
Sub-Type
Resale
Status
Active
Year
1924
Days On Site
410
Listing Provided By
Compass Greater NY LLC | Aileen J. Murstein
Features
Bed(s)
9
Bath(s)
12 Total
SQ Feet
17,587
Garage
7
Basement
Y
Pool
Yes
Acreage
8.96
Interior
Cooling
Central Air
Heating
Forced Air, Natural Gas
Interior Features
First Floor Bedroom, First Floor Full Bath, Beamed Ceilings, Built-in Features, Chefs Kitchen, Crown Molding, Eat-in Kitchen, Elevator, Entrance Foyer, Formal Dining, Granite Counters, His and Hers Closets, In-Law Floorplan, Kitchen Island, Natural Woodwork, Original Details, Pantry, Primary Bathroom, Quartz/Quartzite Counters, Recessed Lighting, Soaking Tub, Sound System, Storage, Tray Ceiling(s), Walk-In Closet(s)
Appliances
Dishwasher, Dryer, Gas Range, Microwave, Refrigerator, Stainless Steel Appliance(s), Tankless Water Heater, Washer, Wine Refrigerator
Garden, Landscaped, Level, Private, Secluded, Sprinklers In Front, Sprinklers In Rear
Fencing
Back Yard, Full
Parking
Garage Yes / No
Yes
Parking Features
Driveway, Garage, Garage Door Opener, Private
Utilities
Utilities
Cable Available, Electricity Connected, Natural Gas Connected, Trash Collection Private, Water Connected
Sewer
Cesspool
Taxes
Tax Year
2026
Tax Annual Amount
125619
Area Information
State
NY
County
Nassau County
City
Upper Brookville
Zip Code
11545
School District
Locust Valley High School
Elementary School
Ann Macarthur Primary School
High School
Locust Valley High School
Sourced by Back At You
MLS Number: 885874
Aileen J. Murstein – (516) 317-6007 – aileen.murstein@compass.com
Compass Greater NY LLC – (516) 517-4751 – jill.mallino@compass.com
Request a showing
Request a showing
MLS Internet Data Exchange (IDX) information is provided exclusively for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing, and that the data is deemed reliable but is not guaranteed accurate by the OneKey® MLS
MLS Number: 885874
Aileen J. Murstein – (516) 317-6007 – aileen.murstein@compass.com
Compass Greater NY LLC – (516) 517-4751 – jill.mallino@compass.com
