An exceptional opportunity for both first-time investors and seasoned investors looking to expand their portfolios, this spacious side-by-side duplex offers two nearly identical, multi-level units with an abundance of space and privacy. Each unit features its own private entrance, full basement with Outside Entrances, attic space, and outdoor deck area. The main level of each unit includes a living room, dining room, eat-in kitchen, large pantry, half bathroom, and access to the backyard. Upstairs, each side offers three bedrooms, including a primary bedroom with a large closet and private ensuite bathroom, plus an additional full bathroom. Unit A also features a wood-burning fireplace. Additional highlights include a detached two-car garage and private backyard. Ideally located just one block from neighborhood access to Lake Ronkonkoma and close to the LIRR, Long Island Expressway, parks, shopping, restaurants, Smith Haven Mall, and the Nesconset Gazebo. Current annual taxes of $20,190, which have not previously been grieved, as the property has never been owner-occupied.