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. Some listing photos have been virtually staged or manipulated by AI.

Facts and features

Schools

• Southampton High School

  high · 9-12 · 1.2 mi

  7

• Southampton Intermediate School

  elementary · 5-8 · 1.4 mi

  6

• Our Lady Of The Hamptons Regional Catholic School

  elementary · K-8 · 2.0 mi

• Southampton Elementary School

  elementary · K-4 · 1.9 mi

  5

• The Hayground School

  elementary · K-8 · 3.6 mi

• Southampton Montessori School

  elementary · K-2 · 4.1 mi

Price history

• Sep 18, 2026 · Price Changed$9,975,000
• Sep 17, 2026 · Price Changed$9,975,000
• Nov 19, 2025 · Listed$10,500,000
• Nov 19, 2025 · Listed$10,500,000
• Apr 8, 2023 · Listing Removed$6,850,000
• Feb 27, 2023 · Sold$3,100,000
• Jun 24, 2022 · Listing Removed—
• Jun 3, 2022 · Listing Removed—

Tax history

• 2022$6,690 tax · $1,614,300 assessed
• 2021$7,675 tax · $1,870,500 assessed
• 2020$7,545 tax · $1,870,500 assessed
• 2018$8,045 tax · $1,856,800 assessed
• 2017$8,109 tax · $1,856,800 assessed
• 2016$8,480 tax · $1,873,200 assessed
• 2015$8,785 tax · $1,873,200 assessed
• 2014$8,977 tax · $1,873,200 assessed

Home value

$9,875,000

• Collateral Analytics$9,875,000
• Cotality$9,477,400
• Quantarium$11,249,411

Where it is