Welcome to this beautifully maintained 4-bedroom, 2-bath hi-ranch in Royal Oaks, Smithtown, offering comfortable living, flexible space, and an impressive backyard retreat. A charming front sunroom welcomes you inside, while the second sunroom features a natural gas fireplace and French doors leading to the upper deck overlooking the backyard. The home offers two full kitchens with appliances included, along with a lower level featuring a one-bedroom apartment. The home is a legal mother-daughter, with the required permits included with the property, offering added flexibility for its next owner. The recently renovated upstairs bathroom features ambient flooring, a heated towel rack, and a jacuzzi bathtub, adding comfort and convenience to the space. Step outside to enjoy a heated, gas-heated saltwater in-ground pool, hot tub, cedar sauna, gazebo, mature landscaping, and in-ground sprinklers. The property also features a full surveillance system for added peace of mind. Additional updates include newly insulated exterior walls and attic, a whole-house water filtration system, and a brand-new cesspool. Thoughtfully maintained and offering a versatile layout with extensive indoor and outdoor amenities, this Smithtown home is ready for its next owner. Come see everything it has to offer and schedule your private tour today!