45-47 William Street offers a rare multi-unit residential property in St. Catharines’ vibrant core. This historic building, constructed in 1922, spans three stories and houses 21 thoughtfully planned apartment units with layouts ranging from studio configurations to two-bedroom suites. The units feature functional floor plans ranging from approximately 400 to 800 square feet, designed to appeal to a diverse tenant base. The property’s coveted location in the central district ensures residents are within walking distance of numerous amenities, including retail shops, dining establishments, and major transit lines. Proximity to Brock University, Niagara College, and the GO Transit station further enhances its appeal to students and professionals. With easy access to Highway 406 and the QEW, the building is well-positioned for connectivity to the Greater Niagara and GTA corridors. As a long-standing address with heritage charm, this property offers reliable tenancy performance and clear potential for modernization strategies that could elevate rental value while maintaining its historic character.