Just completed by boutique custom builder Heartwood Corp, this 7-bedroom, 9-bathroom, 9,600-square-foot Water Mill South estate showcases signature craftsmanship and refined detail. Positioned on prestigious Cobb Road behind a motorized gate and enveloped by mature, professionally designed landscaping, the property offers a private retreat moments from Flying Point Beach and Southampton Village. 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.
New construction
$10,500,000
158 Cobb Rd, Water Mill, NY 11976
7beds
--sqft
Single Family Residence
Built in 2025
-- sqft lot
$10,364,100 Zestimate®
$--/sqft
$-- HOA
What's special
Bonus roomIntegrated luxury appliancesFour additional ensuite bedroomsArchitectural floor-to-ceiling millworkCentral vacuumOpen light-filled layoutMudroom with garage access
- 22 days |
- 449 |
- 18 |
Zillow last checked:
Listing by:
Corcoran Group,
Nicholas Amato - Real Estate Sales Person 516-514-0088
Source: Out East,MLS#: 394925
Tour with a local agent
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 7
- Bathrooms: 9
- Full bathrooms: 6
- 1/2 bathrooms: 3
Rooms
- Room types: Family Room, Laundry, Office
Cooling
- Central Air
Features
- Basement: Yes
- Has fireplace: Yes
Interior area
- Total structure area: 0
Video & virtual tour
Property
Parking
- Parking features: GarageAttached
- Has attached garage: Yes
Features
- Stories: 2
- Has private pool: Yes
- Pool features: Heated
- Has spa: Yes
- Spa features: Heated
Details
- Parcel number: 0900160000300053000
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Condition
- New Construction
- New construction: Yes
- Year built: 2025
Community & HOA
Location
- Region: Water Mill
Financial & listing details
- Tax assessed value: $3,396,800
- Date on market: 4/15/2026
- Lease term: Contact For Details
Estimated market value
$10,364,100
$9.85M - $10.88M
$6,917/mo
Price history
| Date | Event | Price |
|---|---|---|
| 11/19/2025 | Listed for sale | $10,500,000+238.7% |
Source: | ||
| 2/27/2023 | Sold | $3,100,000 |
Source: Public Record Report a problem | ||
| 5/25/2022 | Sold | $3,100,000-8.7% |
Source: Agent Provided Report a problem | ||
| 2/17/2022 | Pending sale | $3,395,000-50.4% |
Source: | ||
| 9/9/2021 | Price change | $6,850,000+101.8% |
Source: | ||
| 7/9/2020 | Listed for sale | $3,395,000+15.1% |
Source: Douglas Elliman Real Estate #19543 Report a problem | ||
| 6/3/2019 | Listing removed | $2,950,000 |
Source: Douglas Elliman Real Estate #3116602 Report a problem | ||
| 4/5/2019 | Listing removed | $135,000 |
Source: Douglas Elliman Real Estate Sag Harbor Office #112926 Report a problem | ||
| 3/22/2019 | Listed for rent | $135,000+77.6% |
Source: Douglas Elliman Real Estate Sag Harbor Office #112926 Report a problem | ||
| 11/7/2018 | Price change | $2,950,000-6.2% |
Source: Sotheby's International Realty #12359 Report a problem | ||
| 7/14/2018 | Price change | $3,145,000-4.6% |
Source: Sotheby's International Realty #12359 Report a problem | ||
| 11/10/2017 | Listed for sale | $3,295,000+4.6% |
Source: Sotheby's International Realty #12359 Report a problem | ||
| 7/18/2017 | Listing removed | $3,150,000+38.5% |
Source: Douglas Elliman #H42633 Report a problem | ||
| 11/15/2016 | Sold | $2,275,000-7.1% |
Source: Public Record Report a problem | ||
| 8/10/2016 | Listing removed | $2,450,000 |
Source: The Corcoran Group #39101 Report a problem | ||
| 4/27/2016 | Listed for sale | $2,450,000 |
Source: The Corcoran Group #39101 Report a problem | ||
| 11/17/2015 | Listing removed | $76,000 |
Source: Sotheby's International Realty - Southampton Brokerage #0054195 Report a problem | ||
| 8/14/2015 | Listed for rent | $76,000 |
Source: Sotheby's International Realty - Southampton Brokerage #0054195 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2024 | -- | $3,396,800 +113.5% |
| 2023 | -- | $1,590,800 |
| 2022 | -- | $1,590,800 -1.5% |
| 2021 | -- | $1,614,300 -13.7% |
| 2020 | -- | $1,870,500 |
| 2019 | -- | $1,870,500 +0.7% |
| 2018 | -- | $1,856,800 |
| 2017 | $8,539 | $1,856,800 -0.9% |
| 2016 | -- | $1,873,200 |
| 2015 | -- | $1,873,200 |
| 2014 | -- | $1,873,200 |
| 2013 | -- | $1,873,200 |
| 2012 | -- | $1,873,200 |
| 2011 | -- | $1,873,200 +5.5% |
| 2007 | $7,809 +92.8% | $1,776,200 +146.7% |
| 2005 | $4,050 -0.9% | $720,063 +6508.5% |
| 2004 | $4,088 +4.7% | $10,896 |
| 2003 | $3,904 +3.3% | $10,896 |
| 2002 | $3,780 | $10,896 |
Find assessor info on the county website
Monthly payment
Estimated monthly payment
All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
See how much you could borrow to make a competitive offer.
Climate risks
Neighborhood: 11976
Nearby schools
GreatSchools rating
- 4/10Southampton Intermediate SchoolGrades: 5-8Distance: 1.3 mi
- 6/10Southampton High SchoolGrades: 9-12Distance: 1.2 mi
- 6/10Southampton Elementary SchoolGrades: PK-4Distance: 1.9 mi
A local agent can set up tours, give advice and negotiate with sellers.
- New York
- Suffolk County
- Water Mill
- 11976
- 158 Cobb Rd





