Welcome to 4 Seneca Drive, located within the highly regarded Commack School District, home to nationally recognized Commack High School, a 2021 National Blue Ribbon School. Situated on a .35-acre lot in one of Commack's most convenient locations, this 4-bedroom, 2-bath home offers an exceptional opportunity to create your dream home while benefiting from several major improvements already completed. Renovations completed in 2021 include a fully gutted and remodeled upper level featuring three bedrooms and a full bath, as well as a fully gutted and renovated basement. Major mechanical updates include updated electrical, plumbing, two-zone HVAC, and gas heat. The in-ground pool was completely renovated in 2021 with a new liner, updated filtration equipment, new concrete work, and pool systems. Additional features include a wood-burning fireplace, one-car garage with attached sauna, two separate outside entrances, and flexible living space ideal for extended family. The lower level features a glass slider leading to the backyard, while a second slider off the kitchen provides access to the upper deck overlooking the property and pool. While many major improvements have already been completed, portions of the home remain ready for a new owner's vision and updates, offering an excellent opportunity to add value and customize to your taste. The location is second to none. Enjoy easy access to major shopping, dining, parks, and everyday conveniences, including Target, BJ's Wholesale Club, grocery stores, restaurants, and retail centers just minutes away. Outdoor enthusiasts will appreciate nearby Hoyt Farm Nature Preserve, offering walking trails, playgrounds, seasonal events, animal exhibits, and family-friendly recreational amenities. Conveniently located near the Long Island Expressway, Northern State Parkway, Southern State Parkway, Sagtikos Parkway, and Sunken Meadow Parkway, making commuting throughout Long Island simple and convenient. Combining major capital improvements, a desirable location, strong school district, and outstanding potential, 4 Seneca Drive presents a unique opportunity in the heart of Commack.