Welcome to 12 William St in Central Islip! This beautifully updated 5-bedroom, 3-bathroom home is truly must-see. The first level features a modern, updated kitchen with stainless appliances, quartz countertops, LED lighting, and new oak floors. The primary bedroom boasts a double closet, while an additional bedroom and updated bathroom on the first floor provide convenience and comfort. The second level features 3 bedrooms and updated bathroom. The full, finished basement with outside entrance offers a laundry room, additional storage space, and endless possibilities for use. With a new roof, on-demand hot water system, and ductless AC/heating units, this home is as practical as it is stunning.