The Brief Two Chicago City Council members reached an agreement on a proposal to allow more accessory dwelling units. A proposal to expand ADUs was blocked at a previous City Council meeting. The Chicago City Council may soon consider allowing more accessory dwelling units (ADUs) after two aldermen reached an agreement on a revised ordinance. A proposal to expand residents’ ability to convert coach houses, garden apartments, or attics into affordable housing units was blocked at a July City Council meeting. What's next:The aldermen said the revised ordinance will be heard by the entire City Council at its meeting on Thursday.