This spectacular bay front property is set on 1.15+/- acres, offering 152+/- feet of direct frontage on Sag Harbor Bay and a 140+/- foot-long deep water dock. The unobstructed east-facing views of the bay include the Mashomack Nature Preserve. This 5,179+/- sq. ft. home (plus 3,000+/- sq. ft. finished lower level) features the modern design of Mark Matthews with Arts & Crafts-styled elements, and incorporates the finest materials with the most up-to-date technology. The home offers six bedrooms, of which one is sited on the ground floor, seven full baths, and two half-baths. The thoughtful interplay between indoor and outdoor spaces augments the natural beauty and waterfront views from practically every room. The open living room with its copper fireplace wall-surround also offers a wall of floor-to-ceiling sliding glass doors that open wide to the bay-facing al fresco dining veranda. The family room with fireplace opens to a covered bluestone terrace that frames the same panoramic water vistas. The finished lower level with 10-foot ceilings includes a full bath, game room, recreation space, fireplace, exercise room, full wet bar, wine cellar and laundry room. This extraordinary property also features a private bay beach, waterside heated Gunite saltwater pool and spa, cabana with an outdoor kitchen and a two-car garage.