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171 Oneck LaneWesthampton Beach, NY 11978

For Sale

$9,999,990

Smart Buyer Rebate $100,000

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. Photo have been digitally enhanced.

Listed by Colleen Graning

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Douglas Elliman Real Estate

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631-288-6244

Listed by Timothy Allen Morabito

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Douglas Elliman Real Estate

Last updated April 28, 2026

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Source: OneKey #989946

Listing Facts

  • TypeSingle-family
  • NeighborhoodThe Hamptons
  • Bedrooms7
  • Bathrooms11
  • Days on Prevu7
  • Taxes$7,077.98/year
  • Size10,316 sqft
  • Price per sqft$969

Amenities

  • Dishwasher
  • Private Outdoor Space
  • Washer/Dryer
  • Air Conditioning
  • Elevator
  • Parking

Location

Mortgage Calculator

Listing History

04/24/2026
Listed by Douglas Elliman Real Estate
$9,999,990

Property Details for 171 Oneck Lane

Exterior

Construction

  • Year Built: 2025
  • Architectural Style: Estate
  • Construction Materials: Cedar
  • Exterior Features: Balcony, Courtyard, Fire Pit, Gas Grill, Lighting, Other

Features

  • Other Structures: Garage(s), Outdoor Kitchen
  • Patio And Porch Features: Covered, Patio, Porch, Terrace
  • Pool Private: Yes

Measurements

  • Building Area Total: 816
  • Building Area Units: Square Feet
  • Lot Features: Back Yard, Front Yard, Landscaped, Near Golf Course, Private, Sprinklers In Front, Sprinklers In Rear
  • Lot Size Acres: 0.92
  • Lot Size Square Feet: 40,075

Financial

Taxes

  • Parcel Number: 0905-009-00-01-00-023-000
  • Tax Annual Amount: $7,077.98
  • Tax Assessed Value: $1,191,300.00
  • Tax Year: 2024

Interior

Features

  • Appliances: Convection Oven, Dishwasher, Dryer, Electric Oven, Exhaust Fan, Freezer, Gas Cooktop, Gas Range, Microwave, Refrigerator, Washer, Gas Water Heater
  • Fireplace: Yes
  • Fireplaces Total: 3
  • Interior Features: 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, Elevator, Entertainment Cabinets, Entrance Foyer, Formal Dining, High Ceilings, His And Hers Closets, In-Law Floorplan, Kitchen Island, Primary Bathroom, Master Downstairs, Open Floorplan, Open Kitchen, Pantry, Quartz/Quartzite Counters, Recessed Lighting, Sauna, Smart Thermostat, Soaking Tub, Sound System, Storage, Walk-In Closet(s), Wet Bar, Wired For Sound
  • Spa: Yes

Measurements

  • Living Area: 10,316
  • Living Area Source: Plans

Rooms

  • Basement: Finished, Full, Storage Space, Walk-Out Access
  • Has Basement: Yes
  • Bathrooms Full: 9
  • Bathrooms Half: 2
  • Bathrooms Total Integer: 11
  • Bedrooms Total: 7
  • Rooms Total: 26

Parking

Parking

  • Garage Spaces: 2
  • Garage: Yes
  • Parking Features: Driveway, Garage, Garage Door Opener

Schools

Elementary School

  • Elementary School: Westhampton Beach Elem School
  • Elementary School District: Westhampton Beach

High School

  • High School: Westhampton Beach Senior High Sch
  • High School District: Westhampton Beach

Middle or Junior School

  • Middle Or Junior School: Westhampton Middle School
  • Middle Or Junior School District: Westhampton Beach

Utilities

Equipment

  • Cooling: Central Air
  • Heating: Forced Air, Radiant Floor
  • Sewer: Septic Tank
  • Utilities: Electricity Connected, Propane, Water Connected
  • Water Source: Public

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 7 bedrooms and 11 bathrooms in this single-family home at 171 Oneck Lane.

What schools are nearby to 171 Oneck Lane?

Nearby schools include the Westhampton Beach Elem School Elementary School, Westhampton Middle School, and Westhampton Beach Senior High Sch.

Does this single-family home have parking?

Yes, there are 2 parking spaces available for 171 Oneck Lane.

What are the annual taxes for 171 Oneck Lane?

Annual taxes for this single-family home are estimated at $7,077.

How does 171 Oneck Lane compare to other single-family homes in The Hamptons?

This single-family home is listed 150% above the average price for single-family homes in The Hamptons and has been on the market for 126 less days than the typical home in this area.

What is the square footage on this single-family home?

According to the MLS, this listing is 10,316 sqft.

171 Oneck Lane is a 7-bedroom, 11-bath single-family home for sale in Westhampton Beach NY 11978. Available on Prevu for 7 days at $9,999,990. This home features 10,316 square feet of living space, located in The Hamptons. The median listing price for single-family homes in this area is $2,385,000. Nearby schools include Westhampton Beach Elem School Elementary School, Westhampton Middle School, and Westhampton Beach Senior High Sch. Property amenities include private outdoor space, dishwasher, elevator, air conditioning, parking, and washer/dryer. Browse more single-family home listings in Suffolk County.

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Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.