Originally Posted by lavenderboozer
Not sure about the laws in your state (US, no clue about UK or other places) but most places have "joint tenant" laws that make it hard to get rid of people. Put it in writing, go online you can find eviction notices. You probably need it notarized and possibly filed in civil court.
I have rental property and am familiar with how hard it can be to get people out once they are in. There are laws protecting the rights of not only rent paying tenants but ppl you and even your tenants, just let stay there.
In Canada (Ontario) it depends if he's technically a "tenant" or just a roomate. If the arrangement is that he's just renting a room in your residence, and you, the owner/rightful tenant have free rein anywhere in the unit, then they are a roomate. You just need to tell a roomate that they need to leave by a certain date, and if they refuse, you call the police.