1000 South Michigan is a skyscraper planned for Chicago, Illinois in the Historic Michigan Boulevard District portion of Michigan Avenue in the Loop community area. It is designed by Helmut Jahn. According to Crain's Chicago Business, plans for the building were known in August 2015. Although the historic district zoning has height restrictions of 425 feet (129.5 m), on September 23, the City Clerk of Chicago website posted that the building is planned to have a rooftop terrace that reaches 1,030 feet (313.9 m) according to Dennis Rodkin of Crain's Chicago Business. Over a month later, Blair Kamin of the Chicago Tribune stated that the plan was to be for a 1,001-foot (305.1 m) tower. The building is a joint venture between New York-based JK Equities and New York-based Time Equities. Eventu