Well-located 4-family investment property in the heart of Winthrop’s Cottage Hill neighborhood. 10–12 Charles Street offers four separately metered units totaling 3,688 square feet on a 6,127 sq ft lot, with strong in-place income and upside. The unit mix consists of two larger units and two one-bedroom units, appealing to both long-term renters and owner-occupants seeking supplemental income. Current rents total approximately $8,550 per month, with additional room for optimization over time. The property features off-street parking for six vehicles, a major value driver in this coastal submarket, along with a full unfinished basement ideal for storage and future improvements. Several units have been refreshed, providing a solid balance of immediate cash flow and long-term capital improvement potential. Located just blocks from the ocean, public transportation, schools, and Winthrop Center amenities, this asset benefits from strong rental demand driven by proximity to Boston & Logan.