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171 Oneck Ln, Westhampton Beach, NY, 11978

7beds
11baths
10,316sqft
$9,999,990
$969price/sqft
$56,506/moest. monthly cost
$2,260,240/yrincome needed

About This Home

Down a perfectly manicured private road, discover 171 Oneck Lane - a newly constructed, estate (built by ONE DEVELOPMENT) that captures the essence of refined Hamptons living. Ideally situated on just under an acre, the property overlooks the prestigious Westhampton Beach Country Club; offering sweeping views across the lush fairways of the 3rd hole-delivering both privacy and an elevated golf setting. Designed with meticulous craftsmanship and focussed on both scale and comfort, the home offers 7 en-suite bedrooms and 11 well appointed bathrooms. A grand foyer introduces a spacious, light filled open concept layout with soaring ceilings, custom millwork, coffered ceilings and elegant moldings throughout.A private side entrance with a grand mudroom, and walk in pantry, offering effortless access and everyday functionality, complemented by the attached two-car garage. The chef's kitchen is both striking and functional, featuring a full slab Quartz backsplash and oversized island with seating, and top-tier paneled appliances by Wolf, Sub-Zero and Bosch. Seamlessly connected living and dining spaces are designed for effortless entertaining, with expansive glass sliders that invite natural light and open to the outdoor living areas. A double sided gas fireplace anchors the main living space and extends into a sophisticated lounge with a built-in bar. A first floor junior primary suite provides ideal guest accommodations with its own private bath. Beautifully detailed main and back staircases lead to all three levels. The second floor includes the primary suite- a true retreat; stunning sunsets and golf course views, a private balcony, fireplace, dual walk-in closets, with french doors and a center island, a spa inspired bath with a double vanity, soaking tub, large format slab shower, and water closet. There are four additional en-suite bedrooms, including one with a private balcony and a charming bunk room with it's own sitting area. A large laundry room with dual washers and dryers complete this level.The fully finished lower level is designed for both relaxing and entertainment featuring a recreation room with a built-in bar, Sub-Zero refrigeration, and XO ice maker, along with areas for billiards and games. A private home theatre with six reclining chairs creates a true cinematic experience. Wellness amenities include a fitness center, Clearlight sauna, changing room and full bath. An additional en-suite bedroom with bath and a powder room provide comfort and convenience for guests. Outdoor living is equally exceptional. Step outside to a resort style backyard oasis. A heated gunite pool with sun ledge and integrated loungers, along with a built-in spa is surrounded elegant stone patios and lush landscaping. The outdoor kitchen is fully equipped with a built-in BBQ, refrigerator, ice maker, and a recessed drop-down TV, and ceiling heaters for extended seasonal use. There are multiple covered patio areas with recessed lighting, fans and speakers. A private putting green and beautifully curated grounds with speciman trees, flowering shrubs & hydrangea, and a private courtyard complete this offering. This is a rare opportunity to own a newly built, fully amenitized estate in one of Westhampton Beach's most desirable locations, offering the perfect balance of luxury, lifestyle, and setting.

Getting Around

20
WalkingCar-Dependent
0
TransitVery Limited Transit
31
BikeSomewhat Bikeable

Schools

Construction

Condition

  • Property condition: New Construction
  • New construction: Yes
  • Year built: 2025

Type & Style

  • Home type: SingleFamily
  • Property subType: Single Family Residence

Interior

Basement

  • Has basement: Yes
  • Basement: Yes

Bedrooms & Bathrooms

  • Bedrooms: 7
  • Bathrooms: 11
  • Full bathrooms: 9
  • 1/2 bathrooms: 2

Cooling

  • Cooling features: Central Air

Features

  • Fireplace: Yes

Interior Area

  • Total structure area: 10,316
  • Total interior livable area: 10,316 sqft

Property

Details

  • Parcel number: 0905009000100023000

Features

  • Stories: 3
  • Private pool: Yes
  • Pool features: Heated
  • Has spa: Yes
  • Spa features: Heated

Lot

  • Lot size: 0.92 Acres

Parking

  • Parking features: GarageAttached
  • Has garage: 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

  • Coastal Flooding
    Coastal FloodingVery High
  • Inland Flooding
    Inland FloodingRelatively High
  • Hurricane
    HurricaneModerate
  • Winter Weather
    Winter WeatherModerate
  • Tsunami
    TsunamiInsufficient Data

How This Home’s Risks Compare

Coastal Flooding
Inland Flooding
Hurricane
Winter Weather
Tsunami

FEMA Declared Disasters in Suffolk County and New York

Flood
Severe Storm
Snowstorm
Straight Line Winds
Tropical Storm
Winter Storm

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 $50,565$606,780
Home Insurance *$3,240$38,880
Property Taxes $997$11,964
Electricity $1,704$20,457
Total$56,506$678,072
*Does not include cost of any FAIR Plan premiums

Income You'd Need if You Spent...

35% on housing$1,937,348/yr
40% on housing$1,695,180/yr
45% on housing$1,506,826/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: 4.6%
4.6%
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

$969This listing

vs Other Active Listings

Avg $/sqft

ZIP 11978$1,109
Suffolk County$724

vs Homes Sold Last Month

Median $/sqft

ZIP 11978$791
Suffolk County$412

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)

Price History

DateEventPrice
2026-04-23Listed for sale$9,999,990
2025-11-19Listing removed$10,490,000
2025-05-05Listed for sale$10,490,000
2023-06-30Sold$1,930,000
2023-01-18Listing removed--
2022-09-10Listed for sale$2,225,000
2022-09-03Listing removed--
2022-07-02Price change$2,225,000
2022-04-16Listed for sale$2,150,000
2020-05-13Listing removed$1,650,000
2020-02-25Listed for sale$1,650,000
2019-04-10Listing removed$1,795,000
2019-04-08Listed for sale$1,795,000
2017-09-21Listing removed$1,795,000
2017-09-19Listed for sale$1,795,000
2012-09-25Listing removed$1,650,000
2012-04-07Price change$1,650,000
2011-06-18Listed for sale$1,798,000
2011-04-08Listing removed$1,798,000
2011-02-07Listed for sale$1,798,000
2010-12-04Listing removed$1,798,000
2010-06-20Listed for sale$1,798,000
2010-03-23Listing removed$1,798,000
2009-07-23Price change$1,798,000
2009-07-05Listed for sale$1,895,000

New Construction

AgentColleen Graning - Associate Real Estate Broker
BrokerageDouglas Elliman Real Estate

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