Rarely does a true side-by-side duplex like this come available in Buffalo, and 30 Penfield Street offers an exceptional opportunity for both owner-occupants and investors. One side is occupied by long-term tenants, while the other is vacant and ready for its next owner, making it an ideal setup to live in one unit while rental income helps offset your monthly expenses, or add another solid property to your portfolio. The vacant right-side unit is loaded with character and thoughtful updates. Originally built as a three-bedroom, the second floor was reconfigured into two bedrooms and an impressively large full bathroom with a tiled tub surround. Hardwood floors run throughout, while one of the home's most striking features is the original brick dividing wall, exposed through the main living area to showcase the craftsmanship and character of this classic Buffalo home. The fireplace adds even more charm and is currently not in use. A full third-floor attic adds even more flexibility, offering space for storage, a hangout area, hobby space, additional rooms, or whatever best fits your needs. Downstairs, the right-side unit features a newer furnace from approximately 2023-2024, glass block windows, and a PEX home-run plumbing manifold with centralized shutoffs for individual fixtures. Most second-floor windows have also been replaced with vinyl double-hung windows. A newer roof covers the front porch, while the main roof is approximately 15 years old. Out back, the nearly all-concrete yard keeps maintenance to a minimum, and a bonus hot tub room adds another unique feature, with the hot tub negotiable. The location ties it all together, with easy access to I-190, Route 198 and the Peace Bridge, plus quick connections to Downtown Buffalo, the Medical Campus, Buffalo Zoo, Elmwood Village, Hertel Avenue, area colleges, Canada and more. Niagara Street continues to grow with restaurants and destinations including West Side Bazaar and Britesmith Brewing. Whether you're looking for a live-in investment, traditional two-unit rental, or a Buffalo property with character you simply do not see every day, 30 Penfield Street deserves a closer look.