Nestled on a sprawling 1.64-acre estate in the heart of Westhampton, this Bruce Nagel-designed masterpiece offers the ultimate Hamptons retreat. Extensively reimagined in 2011, the residence seamlessly blends architectural sophistication with the relaxed pace of waterfront living. The open foyer is adorned with sleek gray hardwood floors and a direct sightline to the water through floor-to-ceiling glass windows & doors. The heart of the home is a great room featuring a linear gas fireplace, offering panoramic views of the pool, deck, and the canal beyond. Enjoy the high-end Downsview kitchen featuring white lacquer cabinetry, substantial Caesarstone countertops, and a suite of professional appliances including Sub-Zero, Miele, and Viking, with sliding glass doors leading to a mahogany deck equipped with a free-standing BBQ with built-in propane line. The remainder of the main level is thoughtfully designed offering two spacious ensuite bedrooms, each with private deck access, alongside two bunk rooms and a versatile hall bath. The second level offers two separate wings. The primary wing boasts floor-to-ceiling windows overlooking Moriches Bay and Dune Road, with a private side deck, and his & her oversized, walk-in closets. The ensuite master bath is outfitted with free-standing soaking tub, walk-in shower with rainfall shower heads and built-in bench, and private water closet. The guest wing features an oversized bedroom currently utilized as a dual office and guest room, with functional sliding door partition in between. Both the office and bedroom offer walk-in closets. For added convenience there is a private hall bath. The resort-like grounds are a rare offering and include a Har-Tru tennis court, heated pool and in-deck hot tub, surrounded by Mahagony deck offering views of the canal. A dedicated pathway leads directly to the canal and dock, recently dredged and ready for water exploration. Additional considerations include two-car garage, 10-circuit Generac generator, water purification system, 4 zone HVAC with propane heat, a Belgium block-lined driveway, and a 6-bedroom-CO. Current annual flood insurance cost is $1,763 with no history of flooding, including during Hurricane Sandy. Schedule your private showing today!