47 McArthur Lane Located in the highly sought-after enclave of Smithtown Pines, this beautifully renovated home delivers the expansive feel of a private upstate retreat right on Long Island. Set within the Hauppauge School District, every detail of this exceptional property has been thoughtfully executed, from the professionally landscaped grounds and impressive masonry work to resort-style backyard. Rich, glowing hardwood floors flow throughout the main level, complemented by a light-filled living room centered around a fireplace with built-in shelving and a formal dining room featuring a statement chandelier and picture window. The custom chef's kitchen serves as the heart of the home, equipped with a waterfall Calcutta quartz center island, Monogram induction cooktop and double ovens, Futuro Italian range hood, Miele under-counter combi-steam oven, Monogram refrigerator and dishwasher, and a built-in Brio water dispenser. Sliding glass doors open to a 600-square-foot deck, structurally reinforce to accomodate a future enclosed room, overlooking the pool, stone gardens, and firepit. The primary suite features plantation shutters and a private ensuite bath with custom cabinetry and a walk-in shower. Primium Pella Series windows and high-end hardware are featured throughout. The finished lower level offers exceptional space for extended living or multi-generational flexibility, with a spacious family room featuring sliders directly to the pool, a generously sized fouth bedroom, a beautifully renovated full bath, and a laundry area concealed behind designer doors. A generous summer kitchen with ample dining space opens direclty to the patio and firepit area, with an adjoining pantry and additional exterior access-perfect for entertaining and effortless poolside living. Outdoors, the fully fenced and updated pool is framed by mature landscaping and dramatic Pennsylvania boulders, with a thoughtfully carved-out area ready for a future hot tub. Stone steps wind through the property, passing a peaceful gazebo before continuing to the upper grounds, where a sports court awaits your personal touch. Approximately half an acre of open lawn provides abundant room for recreation, entertaining, and outdoor activities. The oversized two-car garage includes a dog shower, EV charging, and generator hookup, with additional exterior EV charging capability. Notable updates include a 20-year roof, central air conditioning, a newly completed driveway, 200-amp electrical service, front and rear sprinkler systems, and a boiler and hot water heater approximately three years old. Gas is available at the street for a future conversion.