Mattituck. Built in 1990, this four-bedroom home is set on four-acres on the banks of the Long Island Sound. Details include an oak-paneled study, an entry hall with sea views, and a screened dining porch. Property amenities include a pool, cabana, and 200 feet of waterfront access. Montauk. This six-bedroom home is located on a cliff overlooking Fort Bay Pond. Features include a chef's kitchen, an upper level mahogany deck, and a master suite with large bathroom and private outdoor access.