For Sale

31 Chestnut Hill Drive Upper Brookville, NY 11771

$8,994,999

Listed March 12, 2026, 181 days ago

Listing courtesy of Ephraim J. Simon, Serhant East End LLC MLS #KEY970669

  • 6Bedrooms
  • 8Bathrooms
  • 10,109Square feet
  • $890Per square foot
  • 1989Year built

About this home

ENTIRE PROPERTY WAS COMPLETELY RENOVATED FROM 2023 T0 2026. Maison Blanche: An Architectural Icon in Upper Brookville Experience 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 unobstructing 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.

Description supplied by the listing broker.

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)

Property details

Interior

Kitchens
2
Flooring
Hardwood, Tile
Windows
Casement, Floor to Ceiling Windows, Skylight(s)
Fireplace
Yes
Fireplaces
2
Appliances
Dishwasher, Dryer, Microwave, Oven, Refrigerator, Washer

Systems and utilities

Heating
Electric
Heating zones
5
Cooling
Central Air
Utilities
Electricity Connected, Propane
Water
Public

Exterior and lot

Construction
Frame
Architectural style
Contemporary, Modern
Parking
Driveway, Garage Door Opener, Private
Private pool
Yes
Pool
In Ground, Salt Water
Patio and porch
Patio
Lot features
Back Yard, Level, Near Golf Course, Private

Tax and legal

Parcel number
2427-24-E-00-1046-0
Listing agreement
Exclusive Right To Sell

Property details supplied by the listing broker through OneKey MLS, as of September 11, 2026. Fields not shown were not supplied and should not be read as absent from the property.

This listing

  1. September 2, 2026 Reduced to $8,994,999 from $8,995,000

Location

31 Chestnut Hill Drive, Upper Brookville, NY 11771

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