A rare opportunity to own a truly distinctive piece of Chicago history. Originally built for a Ma Bell switching station and designed by the celebrated architects Holabird & Roche, this intimate seven-unit stone, brick, and concrete building reflects the enduring strength, character, and industrial heritage of another era while offering modern expansive loft living. Residence #4 is a home for those drawn to space, light, and a creative lifestyle. The elevator opens directly into the unit, revealing an immediate feeling of openness, privacy, and calm. Spanning 3,400 square feet on a single level, the residence lives with the ease of a house while offering the character only this one of a kind loft can provide. 14-foot concrete ceilings, concrete floors, exposed ductwork, and clean industrial lines create a warm gallery-like setting that feels both inspiring and serene. Four newly installed custom south-facing 10x5ft Pella Reserve Series arched wood windows, fill the interior with sunlight, while additional 10x5 ft windows with north, east, and west exposures allow the light to move beautifully through the space from morning to evening. Tastefully updated, the home features a reimagined kitchen with tons of custom cabinetry, quartz countertops, open shelving, and new appliances, along with refreshed baths and refined finishes throughout. The expansive living and dining areas offer endless flexibility-ideal for entertaining, displaying art, working from home, or simply enjoying the openness of the space. A private deck adds an easy outdoor retreat. The secluded primary suite feels tucked away and peaceful, complete with an oversized spa-like bath, generous closets, and an adjoining dressing room/library perfect for displaying books, collectibles, or space for your creative pursuits. Additional features include in-unit laundry, central air, updated mechanicals, and two gated exterior parking spaces. Set on a quiet tree-lined street near parks, dining, and transit, this is a rare home defined by character, scale, light, and individuality-unlike anything else in Chicago.