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
$10,212,100 Zestimate®
$--/sqft
$-- HOA
What's special
Bonus roomIntegrated luxury appliancesFour additional ensuite bedroomsArchitectural floor-to-ceiling millworkCentral vacuumOpen light-filled layoutMudroom with garage access
- 64 days |
- 334 |
- 21 |
Zillow last checked:
Listed by:
Corcoran Group,
Nicholas Amato - Real Estate Sales Person 516-514-0088
Source: Out East,MLS#: 394925
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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: $3,844,600
- Date on market: 4/15/2026
- Lease term: Contact For Details
Estimated market value
$10,212,100
$9.70M - $10.72M
$6,502/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 |
|---|---|---|
| 2025 | -- | $3,844,600 +13.2% |
| 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$1,822
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: 1.4 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





