Investor's dream in North Salem! This meticulously maintained 1915 triple-decker offers over 3,400 sq ft of living space with massive 1,000-1,220 sq ft footprints. Each unit features flexible 2-3 bed layouts, high ceilings, and separate, gas heating systems - no oil conversion needed! Units are clean and well kept but dated, providing a perfect "sweat equity" path to market-rate appreciation. Seller is in receipt of Letters of Compliance for Units 2, 3, & common areas. Unbeatable commuter location: just 0.7 miles to the Salem MBTA Depot and minutes from vibrant downtown. Exterior features off-street parking for 3+ cars, a large basement for tenant storage, and a level backyard. Unit 2 occupied at a legacy rate ($1,100/mo); Notice to Quit served. Whether you're looking for a stable buy-and-hold or a potential conversion, 39 Mason delivers. Sold as-is As seen. Buyers and their agents to do their own due diligence. Located in a flood zone. Private showings by appointment.