A Grand Estate: The Crown Jewel of Westchester & The Epitome of Luxury and Privacy

David Sokolowski
Licensed Associate Real Estate Broker
Melvin Caro
VP, Managing Director Licensed Associate Real Estate Broker
2 Overhill Road Scarsdale, NY


773 Armonk Road - New Castle
Mount Kisco NY 10549


Ownership: Single Family
Type: Mansion
Bedrooms: 8 BR
Bathrooms: 12
Area: 22431 sq ft
Lot Size: 98 Acres


Price: $35,888,555
Annual Taxes: $150,000


Serenely nestled on 98 secluded acres in the town of New Castle, is one of the grandest palatial estates in all of Westchester County. Offering a once in a lifetime opportunity to own a fully custom built residence, this incredible home will be finished with the purchaser’s input in accordance with his or her dreams and desires. Steeped deep in history, having once belonged to the legendary showman, Billy Rose, plans call for it to be updated with the finest modern luxuries and state of the art technology. This property is truly in a class by itself.

'The estate at 773 Armonk defines the epitome of elite and sophisticated living. This is showcased by the very fact that the property is built atop one of the highest peaks in all of Westchester featuring breathtaking views of the Hudson Valley, stretching as far as the eye can see. The town of New Castle has been named one of the best places to live in New York State. It is no wonder that many athletes, celebrities and important business figures choose to live there. Some close neighbors include President Bill Clinton and his wife Hillary, world renowned designers Ralph Lauren and Calvin Klein, as well as Martha Stewart, David Letterman, Bruce Willis, Mary J. Blige and Carl Icahn. The long private driveway adds to the allure of this brick and stone mansion as it winds through the well preserved and delicately landscaped grounds.

This elegant 22,431 Square Foot mansion (ability to expand up to 43,000 sq ft with design options) welcomes guests with a beautiful three inch thick solid oak front door, grand ballroom and reception halls which feature twenty-five foot ceilings. The first floor contains a family room, living room, formal and family dining rooms, a grand ball room, sun room and private library. The spacious kitchen has custom cabinetry, over sized islands, and a butler’s pantry with a full secondary kitchen. There is also a chef’s office located on the first floor.

A grand staircase leads to the second story which contains the master suite, a junior master suite and six additional bedroom suites, along with a study and laundry room. The large master suite has two private entrances and features vaulted ceilings, his and hers walk-in closets with dressing areas, and his and hers master bathrooms with top of the line fixtures. In addition, a fully equipped and outfitted spa, private office, and two juliette balconies continue to distinguish the master living suite. This wonderful sanctuary also features a spacious mudroom for the family which is accessible from the multiple garages. Other key features include a large elevator, four gorgeous fireplaces, a cutting edge safe room, a private estate operation’s office, private court parking and an immense, open and flowing terrace overlooking the courtyard. The lower level or basement of the home has been left unfinished in order to be customized at the purchaser’s discretion. Additionally, a full walk-up attic with elevator access is a third floor finish option.

The beautiful surrounding area of New Castle is less than one hour from Manhattan by car or train, and in close proximity to Westchester Country Airport

*Real Estate Taxes are based on 2015 tax roll and are subject to change.*


  • abundant-closets
  • Attic
  • Balcony
  • Bar
  • Basement
  • BBQ
  • Breakfast Area
  • Carpet
  • Central Air Conditioning
  • Courtyard
  • Den
  • Dishwasher
  • Elevator
  • exposed-brick
  • fireplace
  • Fitness Facility
  • french-doors
  • Garage
  • Garbage Disposal
  • Garden
  • Green Building
  • Greenhouse
  • hardwood-floors
  • home-office
  • Jacuzzi
  • Laundry Room
  • Loft
  • Marble Floors
  • Multi Level
  • Negative Edge/Infinity Pool
  • Patio
  • Pool
  • private-entrance
  • Sauna
  • skyline-view
  • Spa
  • Terrace
  • walk-in-closet
  • Washer Dryer


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All information furnished regarding property for sale, rental or financing is from sources deemed reliable, but no warranty or representation is made as to the accuracy thereof and same is submitted subject to errors, omissions, change of price, rental or other conditions, prior sale, lease or financing or withdrawal without notice. International currency conversions where shown are estimates based on recent exchange rates and are not official asking prices.
All dimensions are approximate. For exact dimensions, you must hire your own architect or engineer.