Rarely available duplex-up penthouse built in 2022 by BAK Home Development, offering 3 bedrooms plus a den and 3.5 baths with a modern, thoughtfully designed layout and exceptional outdoor living. The den can easily be converted into a fourth bedroom with the addition of two walls. This all-brick home features an open floor plan filled with natural light, anchored by a spacious living and dining area with oversized windows overlooking tree-lined Buckingham. The custom Italian kitchen is both sleek and functional, featuring Sub-Zero and Wolf appliances, quartz countertops, abundant storage, and an impressive 12-foot waterfall island. The bedroom level includes three generously sized bedrooms plus a flexible den ideal for a home office, playroom, or additional lounge space. The primary suite offers two walk-in closets and a spa-inspired bath with a double vanity, heated floors, water closet, and dual steam shower. High-end finishes throughout include Toto, Hansgrohe, and Duravit fixtures, along with wide-plank oak hardwood flooring. Outdoor living is truly exceptional, with a large covered deck wired for TV and sound, plus a private rooftop retreat designed for year-round enjoyment featuring a custom pergola, infrared heater, gas fire pit, outdoor TV hookup, and low-maintenance artificial turf. Perfect for an active lifestyle, the home is just blocks from Belmont Harbor and the Lakefront Trail, offering easy access to the lake, beaches, boating, running, and biking. Located in the sought-after Nettelhorst School district with a Walk Score of 94, you'll also enjoy convenient access to neighborhood dining, shopping, entertainment, and public transportation, making this home the perfect blend of modern design, comfort, and city living.