Remarkable offering of 17.2 +/- acres total, comprises an expansive Hamptons estate that features a ten-bedroom residence with an indoor pool pavilion, oversized 50'x25' outdoor pool, pool house, and room for tennis on 8.7 +/- acres. Also part of the offering: Three adjoining buildable lots, a long private drive & cul de sac, and a long scenic pondfront easement. Despite the scale, the property is profoundly private. A gate at the entrance opens down a long park-like drive to a cul de sac, off of which a second gate opens to the renovated and updated main residence. Nothing can be seen or heard from the road. Continue around to the front entry court to the traditional, wood-shingled home with covered front bluestone entryway and six-car garage. The front double-height foyer reveals the main stair and the vast double-height great room with wet bar, exposed ceiling beams, enormous double-height fireplace with doors out to the outdoor stone deck living areas. Casual yet refined, the main living spaces embrace a light and airy design that flow effortlessly inside and out, including an indoor pool pavilion with 26'x12' pool, spa, sauna, and bath. An elevator serves three levels, and ground and second floor wings offer junior master suites, the master suite, and four guest suites. Additional living areas are adjacent to the kitchen. The finished lower level offers a gym, bunk bedroom with bath, media/game room with fireplace, and a two-room temperature-controlled wine cellar. A bona fide Hamptons compound, this property has almost endless opportunities to enjoy, entertain, expand, and is situated across from Peconic Bay marinas with easy distances to the Villages of Southampton and Sag Harbor.