Situated on one of the most desirable blocks in the Southport Corridor, 3509 N Janssen is a sophisticated residence that combines timeless design with exceptional craftsmanship. Flooded with natural light, this five-bedroom, four-and-a-half-bath home showcases custom millwork, rich detailing, and premium finishes throughout. At its center is a thoughtfully designed chef's kitchen, anchored by a substantial island and a built-in banquette for everyday dining. Ample cabinetry, a coffee and bar station with Sub-Zero wine storage and beverage drawers, and professional-grade appliances-make the space both functional and refined. The primary suite offers a serene retreat with a spacious walk-in closet and spa-inspired bath featuring a Victoria & Albert freestanding soaking tub, oversized steam shower with rain head, heated floors, and dual custom vanities. Two additional bedrooms and a full laundry room complete the second floor. The penthouse level provides flexible living with a large family room (or office), wet bar, and access to front and rear roof decks. The lower level includes two bedrooms, a generous recreation room with wet bar, a second laundry room, and a mudroom with custom storage. Additional highlights include an oversized gas / wood-burning fireplace, radiant heated basement floors, and multiple outdoor spaces designed for entertaining-a built in bbq on the main level patio and a garage rooftop deck with a pergola. Located in the heart of the Southport Corridor, the home offers unmatched access to boutique shopping, acclaimed restaurants, neighborhood parks, and the Southport Brown Line. 3509 N Janssen delivers the ideal balance of luxury, comfort, and location.