Welcome to this magnificent waterfront Water Mill South Estate located at the end of a cul de sac! This custom built magnificent home sited on a private 4.6 Acres with 890 feet of frontage on Mecox Bay is now on the market for the first time! With approximately 8,000sq ft of living space with 6 Bedrooms, 8 1/2 bathrooms, this estate is an entertainer's dream come true! The property's amenities include a pool house, gunite pool, har-tru tennis court, garage apartment and mature landscaping. The home hosts three fireplaces, a grand entertainment space with majestic all weather sunroom, a large chef's kitchen, and staff quarters. Accompanying the great room is a light-filled sun room, the formal dining room with fireplace, the kitchen with stainless appliances, and the library/office. A Jr. Master Suite can also be found on the main level. The sweeping staircase rises to a spacious landing, from which the principal en suite bedrooms are located. The generous master suite boasts its own sitting room and deck. Outside, brick walkways lead from the covered rear deck to the patio surrounding the in-ground heated 40'x20' Gunite pool and pool house. The water-facing poolside looks out onto the private dock. Enjoy year round privacy and expansive 360 degree water views from this Hamptons beaute.