Oak Park (a west suburb of Chicago) is now allowing coach houses, per the article link below. This community already has some unique features which enable Oak Park to stand out beyond neighboring suburbs as well as the Chicago communities nearby.
It will be interesting to keep watch over this for the next few months. The question is whether this will be another "Oak Park thing", or if coach houses will take hold and be allowed in surrounding areas in order to attract residents to those communities.
My hunch is that it won't go beyond Oak Park in the near future.......
19 hours ago