163 S Plaisted Avenue Welcome to 163 South Plaisted Avenue in Hauppauge, a beautifully maintained Hi-Ranch offering comfortable, spacious living and a private resort-style backyard retreat. The main level features gleaming hardwood floors, recessed lighting, generous living and dining areas, and a bright eat-in kitchen with direct access to the expansive Trex deck overlooking the backyard. The updated main hall bath was renovated in 2020. The lower level provides additional living and entertaining space with attractive laminate flooring and a striking gas fireplace, along with a beautifully renovated bath completed in 2023. Step outside and discover your own private oasis. Surrounded by mature privacy trees, the backyard showcases a heated in-ground pool, expansive paver patio, manicured lawn, in-ground sprinklers, and an elevated Trex deck-an exceptional setting for entertaining, dining outdoors, or simply relaxing poolside. Additional highlights include a Navien gas heating system, central air conditioning, Generac standby generator, ADT security system, two-car attached garage, and LiftMaster automatic garage doors. Ideally located within the Smithtown School District, this meticulously cared-for home combines indoor comfort, valuable upgrades, and outstanding outdoor living in one exceptional Hauppauge property.