31 Chestnut Hill Drive • Upper Brookville, NY 11771

$10,750,000 Beds: 6 • Baths: 6 full 4 partial • Sq. Feet: 10109 • MLS ID: 970669 • Subdivision:School Dist: Locust Valley
Maison Blanche: An Architectural Icon in Upper BrookvilleExperience the pinnacle of ultra-modern luxury at 31 Chestnut Hill Drive. Set on five flat, private acres at the crest of a premier cul-de-sac, this architectural sanctuary was originally designed by the renowned architect Gary Gallagher and redesigned by award-winning FAIA architect Stuart Narofsky, leading to an extensively renovated (2023-2026) masterpiece.The residence features six bedrooms with en-suite bathrooms, four additional half-baths, to include an expansive first-floor primary suite. Architectural highlights include two custom floating staircases with glass railings, porcelain and white oak floors, and frameless full-bodied Belldinni doors. The chef's kitchens in the main and guest houses are equipped with Wi-Fi-controlled Thermador appliances and specialty quartz islands.Uniquely designed for wellness and entertainment, the second-floor features 3 bedrooms and a private gym and Finnish sauna, while the lower level boasts a Dolby-Atmos theater, wine tasting room, a yoga/massage spa, and a wet bar. Outside, a heated saline pool and spa are framed by a porcelain patio and an unobstructed glass railing, and an outdoor wet kitchen.App-controlled for the modern age, the estate features smart management of the custom steel entry gate, five-zone HVAC, motorized shades, security, and a whole-house generator. This is the new standard of Gold Coast living. View this listing at: http://www.laffey.com/lid=185178982

Property Features

  • Garage: 4
  • Taxes: $46,351
  • Basement: Yes
  • Formal Dining: Yes
  • Swimming Pool: Yes
  • Exterior: Frame
  • Lot Size: 5.00 Acres
  • Heating: Electric
  • Cooling: Central Air
  • Year Built: 1989
  • Fireplaces: 2
  • Security: yes
  • Water: Public
  • Sewer: Cesspool
  • On Market Date: 2026-03-14
  • Appliances: Dishwasher,Dryer,Microwave,Oven,Refrigerator,Washer
  • Basement: Finished,Full,Walk-Out Access
  • Building Area Total: 10109
  • Exterior Features: Lighting
  • Fireplace Features: Electric
  • Fireplace Y/N: Yes
  • Flooring: Hardwood,Tile
  • GarageY/N: Yes
  • Interior Features: First Floor Bedroom,First Floor Full Bath,Chandelier,Chefs Kitchen,Eat-in Kitchen,Entrance Foyer,Formal Dining,High Ceilings,Kitchen Island,Primary Bathroom,Master Downstairs,Quartz/Quartzite Counters,Smart Thermostat,Walk-In Closet(s),Wet Bar
  • Lot Features: Back Yard,Level,Near Golf Course,Private
  • Number Of Kitchens: 2
  • Heating Zones: 5
  • Other Structures: Guest House,Pool House
  • Parcel Number: 2427-24-E-00-1046-0
  • Parking Features: Driveway,Garage Door Opener,Private
  • Patio And Porch: Patio
  • Pool Features: In Ground,Salt Water
  • Rental Term: Monthly
  • Rooms Total: 26
  • Security Features: Security Gate,Security Lights,Security System,Video Cameras
  • Skylight: Y
  • Utilities: Electricity Connected,Propane
  • Window Features: Casement,Floor to Ceiling Windows,Skylight(s)

School Information

  • High School: Locust Valley High School
  • Middle School: Locust Valley Middle School
  • Elementary School: Ann Macarthur Primary School
  • School District: Locust Valley
Printed March 14, 2026


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