48 William Penn Drive Located north of 25A in the highly sought-after Stony Brook community, this expanded 3-bedroom ranch offers the perfect blend of comfort, style, and functionality. Thoughtfully renovated and meticulously maintained, the home features a spacious primary suite complete with two walk-in closets and a luxurious private bath designed for relaxation. The bath offers dual spaces, including a vanity and toilet area, along with a separate retreat featuring a freestanding soaking tub and shower. The inviting floor plan provides spacious living space throughout, including a large living room with a fireplace, formal dining room, den, and updated eat-in kitchen that is perfect for everyday living and entertaining alike. Two additional guest bedrooms and a full bath complete the main level. The partially finished basement expands the home's versatility with recreation room used as a game room and office, offering endless possibilities to fit your lifestyle. Car enthusiasts and hobbyists alike will appreciate the oversized 2-car garage that is sure to impress. Outside you will enjoy beautifully landscaped grounds, a welcoming front porch, and a large screened patio that seamlessly extends your living space outdoors and storage shed. Additional updates include windows, roof, Frontier System 2000 Energy Kinetics heating system, hot water heater, garage door openers, vinyl fencing, and flat roof providing peace of mind for years to come. A great opportunity to own this updated ranch in one of Stony Brook's desirable locations. Conveniently located near Stony Brook Village, beaches, parks, shopping, dining, and Stony Brook University.