No photo
171 Oneck Lane Westhampton Beach, NY $ 9,999,990
171 Oneck Lane
$ 9,999,990
Recently Listed
Share Save

171 Oneck Lane

Westhampton Beach, NY, 11978
$ 9,999,990
Bedrooms7 Baths9.2 Sq 10,316

Monthly Estimate*

$ 61,572

Single Family Home for sale in Westhampton Beach, NY

for $9,999,990 with 7 bedrooms and 9 full baths, 2 half baths. This 10,316 square foot home was built in 2025 on a lot size of 0.92.

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.

See more

Single Family Active

Price

$ 9,999,990

Bedrooms

7

Full Bath

9

Half Bath

2

Property Type

Single Family

Taxes

$ 7,077

Style

Estate

Lot Size

0.92

Year Built

2025

Town/City

Westhampton Beach

County/Region

Suffolk

MLS | Web ID

989946

Features
Interior
Interior Amenities First Floor Bedroom First Floor Full Bath Beamed Ceilings Breakfast Bar Cathedral Ceiling(s) Ceiling Fan(s) Central Vacuum Chandelier Chefs Kitchen Crown Molding Double Vanity Dry Bar Eat-in Kitchen
Basement Finished Full Storage Space Walk-Out Access
Total Fireplaces 3
Basement Features Finished Full Storage Space Walk-Out Access
Basement (Y/N) Y
Fireplace Y/N Y
Half Baths 2
Total Bedrooms 7
Total Baths 11
See more
General
Sewer Septic Tank
Heating Forced Air Radiant Floor
Cooling Central Air
Utilities Electricity Connected Propane Water Connected
Appliances Convection Oven Dishwasher Dryer Electric Oven Exhaust Fan Freezer Gas Cooktop Gas Range Microwave Refrigerator Washer Gas Water Heater
Garage Spaces 2
Patio/Porch Features Covered Patio Porch Terrace
Architectural Style Estate
Construction Materials Cedar
Year Built 2025
Property Subtype Single Family Residence
Tax Year 2024
Parcel Number 0905-009-00-01-00-023-000
County Suffolk County
Property Type Residential
HOA N
Garage Y/N Y
Other Structures Garage(s) Outdoor Kitchen
Total Rooms 26
Full Baths 9
Directions Mill Road to Oneck Lane
High School Westhampton Beach Senior High Sch
City Southampton
Senior Community Y/N N
High School District Westhampton Beach
Carport Y/N N
Elementary School Westhampton Beach Elem School
Property Attached Y/N N
Tax Annual Amount 7077.98
Middle/Junior High School Westhampton Middle School
Building Area Units Square Feet
Standard Status Active
Middle/Junior School District Westhampton Beach
Elementary School District Westhampton Beach
Tax Assessed Value 1191300
See more
Exterior
Exterior Amenities Balcony Courtyard Fire Pit Gas Grill Lighting Other
Parking Features Driveway Garage Garage Door Opener Driveway Garage Garage Door Opener
Water Source Public
Spa Y
Building Area Total 816
Waterfront Y/N N
Horse Y/N N
See more
Internal Only
Street Number 1 171
See more
* Excluded Features
List By
Colleen Graning

Listing Agent

Douglas Elliman Real Estate

Broker

631-288-6244

Contact

Affordability Calculator

$62,161
Per Month
99%
1%
0%
Monthly Principal & Interest
$61,572
Monthly Property Taxes
$590
Monthly Home Insurance
--
Default based on a 30-year fixed rate of 6.25% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
Learn more about how to save

Discover how much house you can afford

Your dream home may be within reach.

Learn More about how to save

The time to sell is now
THE TIME TO SELL IS NOW! What's my home worth?
Nearby
4099604 Elementary School
4099415 Middle School
Westhampton Beach Senior High Sch High School
Pricing History
DatePricePrice ChangeDescription
4/24/2026$9,999,990 Listed Price

Map


See all

171 Oneck Lane, Westhampton Beach, NY, 11978 is a Single Family Home for sale at $9,999,990 with 10,316 sqft and a lot size of 0.92. 171 Oneck Lane has 7 bedrooms, 9.2 baths, and was built in 2025. The property's zip code is 11978 which is in Westhampton Beach, NY