Legal Question in Landlord & Tenant Law in Illinois

Most localities have zoning codes and require minimum sf for the number of occupants. The other thing is whether this group is related by blood or marriage -- there are limitations on that as well. Localities don't want people squashed into spaces that are too small from a health, sanitation and safety standpoint. 800 sf could have 3+ bedrooms, however, and that could be enough. You'd have to check with your locality's zoning/code authorities.....