Not to be harsh but these forums are a VERY hopping place.

(In California) Most disabled adults have social workers or programs that helps them get these jobs, such as your tenant, or helps them find housing, without sounding harsh, but find out from the sister if there is someone you can talk to to verify that he is able to live independently. 

Yes, that was a bit harsh.

Their winters are harsh, but nothing compared to Canada.

I guess I can't judge them too harshly, sometimes I can be a little off-putting, even for myself:) Plus 1 week definitely isn't long enough to cultivate good working relationships, but if I'm not looking at properties or trying to figure out the streets, I'm twiddling my thumbs and my brain is going like 50 miles a second!

@Daniel Guerra, What I am going to say may look harsh but that's the reality you need to be aware of.Your questions, while important, beg a question of their own.

Because at some point in time, the building will get sold and an Ellis eviction or something like it will happen and then that protected tenant faces the harsh reality of the market. 

The  mental aspect of this is crazy harsh.

That's harsh...I would not be opposed to free education, actually -- in exchange for a number of years of community service.

Kind of harsh, but his rationale was either the tenant meets approval standards or they don't.