May 11, 2016
…The mayor is endorsing a proposed ordinance, set for a City Council vote next week, that would require any unit that is rented out on Airbnb or a similar online service for more than 90 days a year to be regulated as a commercial property. Lichtenfeld and others say that number gives too much leeway to investors who are running homes like hotels in residential neighborhoods. “I don’t know about you, but 90 days seems like an awful lot of party days,” he said….
Source: http://www.chicagotribune.com/business/ct-airbnb-chicago-met-20160510-story.html