Landmark at 173 West 85th Street offers a rare Upper West Side leasing opportunity featuring a 539-square-foot ground-floor retail/office space and a private street entrance. The duplex-style layout is currently configured with two offices, a reception or waiting area, and access to a lower-level ideal for storage via a distinctive spiral staircase. The property boasts hardwood floors, finished 9-foot ceilings, abundant natural light, and a half-bath. The space supports a wide range of uses, including boutique office, medical, or specialty service users seeking direct street presence in a highly residential, high-income market. Located on a quiet, tree-lined block just steps from Amsterdam Avenue and Broadway, Landmark sits at the intersection of neighborhood charm and urban energy. The Upper West Side is one of Manhattan’s most affluent and densely populated areas, with over 650,000 residents within 2 miles and an average household income nearing $140,000, creating strong, consistent demand for retail and professional services. Immediate access to the 1, B, and C subway lines, multiple bus routes, and proximity to Central Park, Lincoln Center, the American Museum of Natural History, and Columbia University drive daily foot traffic and brand visibility. Surrounded by national retailers such as Panera Bread, CVS, and Barnes & Noble, along with well-established local favorites, Landmark supports long-term tenancy in a resilient market.