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MLS ID KEY937172Last updated Oct 14, 2026

Single Family

158 Cobb Road

Active · Southampton · Suffolk County, NY 11976

Bedrooms
7 Beds
Bathrooms
9 Baths
Year built
2025
Est. monthly taxes
$1,251.27
Property gallery0 / 30
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About this home

New Construction | Water Mill South Experience exceptional Hamptons living in this new construction luxury estate in coveted Water Mill South, moments from Flying Point Beach and Southampton Village. Thoughtfully designed for sophisticated year-round living and effortless summer entertaining, this turnkey residence offers exceptional craftsmanship, refined interiors, and a resort-style outdoor oasis. Built by boutique custom builder Heartwood Corp, this 7-bedroom, 9-bathroom, 9,600-square-foot estate showcases signature craftsmanship and meticulous attention to detail. Positioned on prestigious Cobb Road behind a motorized gate and enveloped by mature, professionally designed landscaping, the property offers an exceptional sense of privacy. A soaring two-story foyer introduces the open, light-filled layout, highlighted by architectural floor-to-ceiling millwork on a double-sided gas fireplace shared with the living room. The dining area flows into a fully outfitted butler’s pantry with sink, ice maker, wine refrigerator, and walk-in pantry. The chef’s kitchen blends elegance and performance with custom white oak and painted cabinetry, integrated luxury appliances, and a hybrid waterfall island ideal for entertaining. The first-floor junior suite features a private patio, two walk-in closets, and a large spa-inspired bath with double vanity and privacy-glass shower enclosure that welcomes natural light. The living room, kitchen, foyer, and junior suite all overlook the landscaped grounds and pool, creating seamless indoor-outdoor living. A mudroom with garage access and a powder room complete the main level. Upstairs, the primary suite is a tranquil sanctuary offering two walk-in closets, a luxurious bath with soaking tub, separate vanities, makeup station, and privacy-glass shower and water closet, plus a dedicated office and serene views. Four additional ensuite bedrooms, a bonus room, and a custom-outfitted laundry room complete the second floor. The lower level is designed for recreation, featuring a glass-enclosed wine cellar, den with wet bar and wine cooler, flexible gym/media/game space with exterior access, a private sauna with Bluetooth controls, a full bath with steam shower, powder room, and two guest or staff bedrooms. Outdoors, resort-style amenities include a heated saltwater Gunite pool with integrated spa and sundeck, outdoor shower, stainless-steel kitchen and bar, and a dedicated outdoor powder room for poolside convenience. Expansive patios and lush landscaping set the atmosphere for effortless summer living. With Wi-Fi–enabled smart-home capabilities, custom cabinetry, tailored closet systems, central vacuum, laundry on two levels, and a radiant-heated two-car garage, 158 Cobb Road embodies timeless sophistication, abundant natural light, and modern Hamptons craftsmanship.

Listing snapshot

Days on site
59 days
Listed on MLS
Nov 19, 2025
Full baths
6
Half baths
3
Annual property tax (MLS)
$15,015.24
Tax year
2025
Area source (MLS)
Plans
Listing brokerage
Corcoran
MLS ID
KEY937172
Last updated
Oct 14, 2026

General features

Property type
Single Family
Property subtype
Single Family Residence
Year built
2025
Garage
Yes
Garage spaces
2
Parking
Driveway, Garage, Heated Garage
Water source
Public
Sewer
Septic Tank
Utilities
Electricity Connected, Natural Gas Connected, Water Connected

Interior features

Basement
Finished, Full, See Remarks, Walk-Out Access
Heating
ENERGY STAR Qualified Equipment, Hydro Air, Natural Gas
Cooling
Central Air
Interior
First Floor Bedroom, First Floor Full Bath, Built-in Features, Central Vacuum, Chandelier, Chefs Kitchen, Double Vanity, Eat-in Kitchen, Entrance Foyer, High Ceilings, His and Hers Closets, In-Law Floorplan, Kitchen Island, Natural Woodwork, Open Kitchen, Pantry, Primary Bathroom, Master Downstairs, Soaking Tub, Walk-In Closet(s), Wet Bar, Wired for Sound
Appliances
Convection Oven, Dishwasher, Dryer, ENERGY STAR Qualified Appliances, Freezer, Gas Cooktop, Gas Oven, Gas Range, Humidifier, Other, Oven, Range, Refrigerator, Stainless Steel Appliance(s), Washer, Wine Refrigerator
Fireplace
Yes

Exterior features

Architectural style
Colonial
Construction materials
Other
Private pool
Yes

Schools (MLS)

Elementary school
Southampton Elementary School
Elementary school district
Southampton
Middle school
Southampton Intermediate School
Middle school district
Southampton
High school
Southampton High School
High school district
Southampton

School information is provided by the MLS. Confirm attendance eligibility with the school district.

Recent activity

  1. Listing updated from MLS
  2. Price changed to $9,975,000
  3. First seen on this site
  4. MLS status changed

Location

Southampton · Suffolk County, NY 11976Show interactive map
158 Cobb Road

Southampton · Suffolk County, NY 11976

Google Maps directions

Estimate monthly payment

Loan detailsFixed-rate, fully amortizing loan. Edit the assumptions below; no market rate is supplied.
Property expenses (USD)
MLS amounts are prefilled when available and can be edited. Confirm what fees include. Unknown fee frequencies cannot be converted automatically.Property expenses: MLS values where available; missing values stay blank.

Estimated monthly principal & interest—

Monthly property taxNot provided

Monthly association / maintenance feesNot provided

Estimated monthly total of entered costs—

Excludes insurance, mortgage insurance, special assessments and lender fees. MLS taxes may reflect abatements or exemptions and can change.

Listing data is supplied by the MLS and may change without notice.