Contact the landlord and tenant board. The law office that I work for does some work with the L&T. Here is a site that might help you http://www.ltb.gov.on.ca/en/STEL02_111281.html
you might be able to get away with filling out a T2 if not then you will need to fill out a T6. I know that here in Hamilton they are very helpful so hopefully in Toronto they are the same.
Best of luck