Located in historic Rockland, this rare duplex offers exceptional flexibility, character, and long-term potential. Each side features over 2,000± square feet of living space with 4 bedrooms and 1.5 baths, plus unfinished third floors on both units offering excellent expansion opportunities. The units could remain as a duplex, be rented individually, used as a multi-generational compound, or potentially sold separately. The owner-occupied unit has been beautifully remodeled with gleaming wood floors, a new kitchen with updated appliances and granite countertops, and space to create an eat-in kitchen. A rear mudroom provides practical entry for all Maine seasons, complemented by a butler's pantry ideal for extra storage and kitchen essentials, along with a convenient first-floor laundry area. The generously sized dining and living rooms offer classic proportions, and there is potential to restore the fireplace for wood-burning use. A grand foyer with a striking staircase and a first-floor half bath complete the main level. The second floor includes four bedrooms and a full bath. The tenant unit is a mirror image of the owner's side and was renovated in 2018. While the floors are currently painted, they could be refinished to restore their original character. The kitchen features Formica countertops with the same functional layout on both floors and similar attic expansion potential. The current tenant lease runs through June 2026. Set on a quiet street with a welcoming front porch in a lovely neighborhood, this property is just minutes to walk to downtown Rockland, where you can enjoy restaurants, galleries, and shopping. Nicely finished yet offering substantial upside, this is an outstanding opportunity for investors, owner-occupants, or buyers seeking flexibility and future value.