This +/-6,000sqft. new construction transitional masterpiece is the quintessential Hamptons home located in Bayview Oaks, a Southampton waterfront community with access to Peconic Bay. You are greeted by the charming covered porch as you enter the double-height, sun-filled foyer fully outfitted with 8-inch character-grade hardwood floors, custom millwork, and Emtek finishings. The sprawling first floor boasts a formal dining room that effortlessly flows into the custom gourmet chef kitchen, quartz counter tops, custom cabinetry, an oversized island providing additional prep space and storage with barstool seating, and a breakfast nook with full views of the grounds. The great room, centered around a custom fireplace flows to all rooms for effortless entertainment. The first floor additionally features a first-floor junior primary bedroom with an ensuite bathroom, currently furnished as a den, mudroom, one and a half bathrooms. The second floor boasts the primary suite with the primary bathroom, outfitted with double vanity sinks, a freestanding soaking tub, an elegant glass shower, a custom walk-in closet, and a custom fireplace. Three guest bedrooms, all accompanied by ensuite custom bathrooms and closets, as well as a laundry room complete the second story. The lower level, equally grand and spacious, features a recreation room fully outfitted with a bar for entertainment. The sprawling grounds feature a 40' x 18' heated gunite pool & spa with a bluestone patio and an oversized 3-car garage with an artist studio above. Attached to the home is a covered porch, featuring both a dining and lounge area, as well as a covered lounge centered around the outdoor fireplace & bar attached to the garage. All just moments away from the charming shops, dining, docks, bay beaches and entertainment Sag Harbor & Southampton Village has to offer!