Tell Concil, that is illegal to lease house for so many people. Whether he/she pay the tax for the sub-lease? I don't think so. What will happen if he/she did not report the tax for sub lease, whether he/she have the right to sub-lease as contract? The owner and/or agent will be some trouble to let so many people live in a house.
Whether the owner want to become the big news in newspaper? I think I read few similar news few weeks ago......