Rare multi-dwelling opportunity in Bellingham's highly sought-after Columbia neighborhood. This unique property package spans two distinct lots totaling a sprawling 21,600 square feet. It includes a classic 1952 brick rambler (3017 Lynn St) and a newer 550sqft Detached Accessory Dwelling Unit (3015 Lynn St). The sale includes the adjacent second lot situated directly behind the homes, operating as a private, park-like oasis featuring a log-lined trail, a firepit gathering space, a recreation clearing, and rare access directly abutting Squalicum Creek. The 1,404sqft main residence features a distinct mid-century modern aesthetic, offering 3 bedrooms, 1 bathroom, a gas fireplace, and comfortable, efficient radiant heating. The separate 1-bedroom, 1-bathroom DADU is loaded with modern upgrades, featuring abundant natural light through sun tubes, elegant French doors, and a ductless mini-split system providing both heating and air conditioning. Exterior amenities across the two lots include dedicated, separate parking areas for both the main home and the DADU, outbuildings, and a dedicated RV parking space. Located just minutes from St. Joseph Hospital, local parks, and Bellis Fair shopping, this property offers incredible versatility for investors or owner-occupants looking for a secluded, dual-income compound.