Expansive two-family in desirable Allston, just minutes to Harvard, Fenway, MGH, and Boston Landing. Strong investment or owner-occupant opportunity featuring a spacious 4-bedroom unit spanning two levels plus a separate 2-bedroom unit. Energy-efficient upgrades include owned solar panels, updated electrical panels, full MassSave insulation, and 5 mini-splits with two dedicated heat pumps. Smart switches allow for seamless smart-home control via Alexa, while Nest thermostats provide efficient heating and cooling. Two furnaces are in excellent condition and serviced annually. Enjoy a bright front porch/sunroom (2017) with solar-efficient windows for year-round comfort, plus a newly completed rear deck (2023) ideal for outdoor living. A garage and 7 parking spaces make this the perfect owner-occupant or investment with tremendous upside for the present and the future. 3 Floors of living space, property is currently owner-occupied.