Exceptional three-family in the desirable Baldwin neighborhood, nestled between Harvard Square and Porter Square. The spacious owner's residence at 15 Forest occupies the first floor and part of the second, featuring a gracious living room with fireplace and bay windows, plus an expansive dining room that opens to a large rear deck overlooking a private yard. Two one-bedroom units at 15A Forest sit on the upper floors: Unit 2 offers a bright open-concept living space with views of the front garden, while Unit 3 features a classic layout with inviting living and dining areas. The full unfinished basement offers 7'10" ceilings and excellent potential for future expansion. A long driveway provides off-street parking. An ideal opportunity for an owner-occupant, investor, or developer seeking a well-located property with charm and flexibility. Enjoy close proximity to Harvard University, the Red Line, and the many shops and restaurants of vibrant Mass Ave. A rare and exceptional offering.