The kind that makes you have incredibly violent responses when you are triggered. For some something simple like a motorcycle backfiring puts them right back into their war(s). That can get violent under the wrong circumstances.
Homeless people... "live with" other people... Something doesn't add up, here.
Unless you're counting the people walking by on the street as "housemates".
These people who choose to be unhoused frequently have people and places they can live and choose not to be there. Perhaps I was unclear on that point. They are unhoused people but they do not have to be.
So like the kind of thing you're way more likely to encounter on the streets, and way less likely to be able to safely regulate without somewhere safe and private to go?