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31 Chestnut Hill Drive, Upper Brookville, NY, 11771

6beds
10baths
10,109sqft
$8,995,000
$890price/sqft
$64,174/moest. monthly cost
$2,566,960/yrincome needed

About This Home

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.

Getting Around

2
WalkingCar-Dependent
0
TransitVery Limited Transit
25
BikeSomewhat Bikeable

Schools

--
Ann Macarthur PrimaryGrades K-22.6 mi
7/10
9/10
Locust Valley High SchoolGrades 9-123.0 mi

Construction

Condition

  • Year built: 1989

Notable Dates

  • Major remodel year: 2025

Type & Style

  • Home type: SingleFamily
  • Architectural style: Contemporary,Modern
  • Property subType: Single Family Residence,Residential

Interior

Appliances

  • Appliances included: Dishwasher,Dryer,Microwave,Oven,Refrigerator,Washer

Basement

  • Has basement: Yes
  • Basement: Finished,Full,Walk-Out Access

Bedrooms & Bathrooms

  • Bedrooms: 6
  • Bathrooms: 10
  • Full bathrooms: 6
  • 1/2 bathrooms: 4

Features

  • First Floor Bedroom,First Floor Full Bath,Chandelier,Chefs Kitchen,Eat-in Kitchen,Entrance Foyer,Formal Dining,Kitchen Island,Primary Bathroom,Master Downstairs,Quartz/Quartzite Counters,Smart Thermostat
  • Window features: Casement,Floor to Ceiling Windows,Skylight(s)
  • Flooring: Hardwood,Tile
  • Number of fireplaces: 2
  • Fireplace features: Electric
  • Fireplace: Yes
  • Attic: None

Heating & Cooling

  • Heating features: Electric
  • Cooling features: Central Air

Interior Area

  • Total structure area: 10,109
  • Total interior livable area: 10,109 sqft

Property

Details

  • Parcel number: 242724E0010460
  • Special condition: None
  • Other equipment: Generator

Features

  • Private pool: Yes
  • Pool features: In Ground,Salt Water
  • Patio & porch: Patio
  • Exterior features: Lighting

Lot

  • Lot size: 5 Acres
  • Features: Back Yard,Level,Near Golf Course,Private

Parking

  • Total spaces: 4
  • Parking features: Driveway,Garage Door Opener,Private
  • Has garage: Yes
  • Attached garage spaces: 4
  • Covered spaces: 4
  • Has uncovered spaces: Yes

Climate Risk is Financial Risk

Every home has a financial story beyond the listing price. Below, you’ll see the climate risks that could affect this property — and in Bills & Affordability, how those risks may influence repairs, insurance, utilities, and long-term value.

Biggest Threats for This Home

  • Inland Flooding
    Inland FloodingRelatively High
  • Earthquake
    EarthquakeModerate
  • Hurricane
    HurricaneModerate
  • Ice Storm
    Ice StormModerate
  • Winter Weather
    Winter WeatherModerate
  • Tsunami
    TsunamiInsufficient Data

How This Home’s Risks Compare

Inland Flooding
Earthquake
Hurricane
Ice Storm
Winter Weather
Tsunami

FEMA Declared Disasters in Nassau County and New York

Flood
Severe Storm
Snowstorm

Understanding the Costs

Financial advisors generally recommend spending no more than 30% of your gross household income on housing costs. In practice, many households stretch to 35% or beyond — especially in high-cost markets.

Estimated Costs Today

MonthlyAnnual
Mortgage $45,483$545,796
Home Insurance *$4,129$49,548
Property Taxes $12,892$154,704
Electricity $1,670$20,047
Total$64,174$770,088
*Does not include cost of any FAIR Plan premiums

Income You'd Need if You Spent...

35% on housing$2,200,251/yr
40% on housing$1,925,220/yr
45% on housing$1,711,306/yr

New York FAIR Plan Programs

New York Property Insurance Underwriting Association

Covered
WildfireWildfire
HailHail
WindWind
Visit Website →
Current Policies
Residential: 20,669Commercial: 1,556
Total Premiums$32.27M
Total Exposure$7.63B

How Costs Could Change Over Time

Climate risk is quickly impacting all of the major home ownership costs. Adjust the growth rates and percentage of income spent on housing below to see how your housing costs could change over the next 10 years — and what income you'd need to keep up.

Insurance Growth Rate5-year average: 6.4%
6.4%
0%30.0%
Electricity Growth Rate10-year average: 7.1%
7.1%
0%15.0%
Property Taxes Growth Rate2-year average: 1.0%
1.0%
0%15.0%
Income Spent on Housing
30%
30%45%

Comparing Against the Market

Price Per Sq Ft

$890This listing

vs Other Active Listings

Avg $/sqft

ZIP 11771$727
Nassau County$567

vs Homes Sold Last Month

Median $/sqft

ZIP 11771$590
Nassau County$510

Current Market Trends

Median Price Per Square Foot

The median price per square foot of homes sold in this area each month. Compare this to this listing's price per square foot to gauge whether the home is priced in line with recent sales.

Historicals for This Listing

Zestimate History ($/sqft)

No zestimate history available

Price History

DateEventPrice
2026-03-14Listed for sale$10,750,000
2023-07-10Sold$2,500,000
2023-06-14Pending sale$3,499,000
2023-03-21Listed for sale$3,499,000
2021-07-07Listing removed--
2020-07-21Price change$3,500,000
2019-11-18Price change$3,450,000
2019-07-02Price change$3,500,000
2019-01-27Price change$3,800,000
2018-02-07Listed for sale$3,999,999
2018-01-05Listing removed$4,000,000
2017-06-12Listed for sale$4,000,000
2016-12-26Listing removed$4,350,000
2016-06-23Listed for sale$4,350,000
2015-10-25Listing removed$4,495,000
2014-09-22Listed for sale$4,495,000
2013-10-22Listing removed$4,988,888
2013-07-09Price change$4,988,888
2013-05-01Listed for sale$5,200,000
2013-01-14Listing removed$5,200,000
2012-07-14Listed for sale$5,200,000

For Sale by Agent

AgentSerhant East End LLC, Ephraim J. Simon
BrokerageSerhant East End LLC

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