107 Underhill Avenue Rare opportunity to own a spacious, turnkey two-family home with bonus third-floor living space in the heart of highly desirable West Harrison - delivered fully vacant and ready for immediate occupancy or income generation. First and second floor apartments offer beautifully proportioned, light-filled layouts featuring 3 bedrooms, 1 bath, kitchen, dining room, and a warm, inviting living room with fireplace. The first-floor unit enjoys a private rear entrance and bluestone patio, creating seamless indoor-outdoor living. The second-floor unit features an updated kitchen and bath, offering modern finishes. The third floor provides bonus space complete with two additional rooms with large closets, bonus room with wet bar, and a bathroom. This level can be incorporated into the second floor to create an expansive five-bedroom duplex or utilized as flexible extended living space - ideal for multi-generational living, guest rooms, or added versatility. The partially finished basement offers a common area, three separate storage rooms, shared laundry, and walk-out access to the driveway. Additional hookups for second laundry area available. The basement also provides direct access to the attached two-car garage for added convenience. Exceptional parking includes spacious driveway and a detached two-car garage in addition to the attached garage - presenting valuable supplemental income potential in this high-demand location. Bright, spacious apartments, flexible living configurations, low taxes, and a commuter-friendly location close to Metro-North and major highways - all within the sought-after Harrison School District. A rare turnkey opportunity in one of the area's most desirable communities.