The proposed Residential Business Planned Development at 55 East Washington Street and 31-41 North Wabash Avenue in Chicago seeks to rezone the property from DR-10 Downtown Residential District to DX-16 Downtown Mixed-Use District, and then to a Residential Business Planned Development. The project involves an interior remodeling to convert existing, vacant office space into an additional 214 residential dwelling units, bringing the total to 442 dwelling units. The property currently operates as a mixed-use residential and commercial building, with the proposed changes maintaining its overall height at 557 feet. The project is subject to the Affordable Requirements Ordinance (ARO), with the applicant committing to providing 43 affordable units within the rental building. Permitted uses will include eating and drinking establishments with liquor sales.