323 West 89th Street a classic Upper West Side 100% Free Market multifamily property located on a tree-lined block just steps from Riverside Park. Built with traditional prewar architecture, the building spans approximately 7,120 square feet and features a desirable layout ideal for long-term rental stability. Positioned between West End Avenue and Riverside Drive, the property benefits from strong neighborhood demand, excellent walkability, and direct access to the area’s top amenities.