Bayfront living on the Great South Bay. This 4-bedroom, 3-bath waterfront home in West Islip's Oak Neck Estates has open-water views of the Great South Bay and the Robert Moses Bridge through walls of oversized windows. You get sunrises over the water, boats passing by, and summer breezes off the bay. The custom chef's kitchen has a 9' center island, Thor professional appliances, a dry bar and a hidden walk-in pantry, and it's made for entertaining with the bay as your backdrop. The formal living room opens to a private balcony overlooking the water. The den has a fireplace for cozy evenings. The primary bedroom has a large walk-in closet and its own primary bath with an oversized shower and a multi-head shower system. There are three more bedrooms and two more fully updated baths. The finished lower level gives you flexible space for a gym, media room or guest quarters, and there's an attached two-car garage. Outside is a private resort-style backyard on the bay. It has an inground saltwater pool, 2,200 sq ft of paver patio, a gas fire pit, a gas BBQ hookup, and a whole-house gas generator. Move-in ready and in superb condition, this is a rare chance to own a luxury waterfront home in one of the South Shore's most sought-after neighborhoods.