221 COLUMBIA AVE 3 (ADU) A rare opportunity to own a fully detached, new construction carriage house-style condo with 1 bedroom and 1.5 bathrooms across 848 thoughtfully designed square feet. This unique duplex residence combines privacy, style, and flexible living in a sleek, modern package. Enjoy your own private entrance and spacious open-concept main level, featuring 10-foot ceilings, 5-inch wide real hardwood floors, and abundant natural light from oversized Andersen windows. The kitchen is outfitted with Samsung stainless steel appliances, custom white shaker cabinetry, and quartz countertops, with a convenient half bath located on the main floor. Upstairs, the spacious primary suite includes a large walk-in closet and a full bathroom with striking floor-to-ceiling tilework. Additional highlights include an in-unit washer and dryer, energy-efficient mini-split systems for heating and cooling, and a 10-year builder’s warranty for peace of mind. Whether you're looking for a private home office setup, a guest suite, or a smart investment opportunity, this detached condo offers outstanding flexibility with premium finishes throughout.