WATERFRONT sophistication meets timeless coastal design at this extraordinary new construction home set on two private acres overlooking the tranquil waters of Duck Harbor. Designed by renowned architect Louise Agnes, this custom shingle-style Colonial offers approximately 8,000 square feet of exceptional living space with panoramic harbor views and spectacular western sunsets. A dramatic 22-foot foyer introduces beautifully crafted interiors featuring chevron-pattern white oak flooring, custom millwork, recessed paneling, and designer finishes throughout. The chef's kitchen is anchored by a stunning 16' x 6' quartz island and appointed with Wolf six-burner double ovens, Sub-Zero refrigerator, Bosch dishwasher, walk-in pantry, butler's pantry with beverage refrigerator. The formal dining room is complemented by a private wine room or cigar lounge. Floor to ceiling windows fill the great room with natural light and breathtaking waterfront views, while sliding doors open to an expansive patio overlooking the oversized 22' x 44' saltwater pool with a Baja shelf. New York Bluestone paver patio. Offering six ensuite bedrooms, including a first-floor guest suite, the home is designed for luxurious everyday living. The exceptional primary suite features radiant heated bath floors, a makeup area, an expansive custom walk-in closet, and a covered waterfront balcony. Additional amenities include a three-stop elevator, two laundry rooms, library, mudroom, heated and air-conditioned three-car garage, central vacuum, five-zone heating, 400-amp electric, spray foam insulation, 10-foot basement ceilings, 50-year architectural roof, Tando Beach House shake siding with custom Azek trim, custom wrought-iron entry door. Located in the Northport School District with access to the private beach known as the Sluice. residents enjoy access to the Sluice for activities such as kayaking, paddleboarding, boating, fishing, and beach access. Just minutes from the Village of Northport, this exceptional waterfront residence offers luxury, privacy, and effortless access to Long Island Sound.