I do have to comment on this point. Safety and responsibility is also relevant in regards to whom you rent to. This is why people do background checks. If you did a background check on an applicant to rent a room in your house and you found out they were a convicted child molester, and you have young children in the house, would you feel compelled to rent to that person in the name of "non-discrimination" or would you err on the side of safety and most likely chuck their application to the side and consider someone else?
Safety is a relevant issue. If you have good reason to believe that a person would be a safety risk to you or other people in the house, then this would be a good reason to turn someone down as a roommate. I think that sort of record would be entirely relevant: if a person would be barred from the grounds of an elementary school, why would it be appropriate to have him in the same home as elementary school-aged children?
But I should point out that I think that this is a case where there's a difference between a roommate arrangement and the rental of a separate apartment: in the case of the apartment, the person's living in a different dwelling unit that's separated from the homeowner's area by locked (or lockable) secure doors. In the case of a roommate, you're literally sharing a home.
In the case of a tenant in an accessory apartment, you have your home, he has his, and you only share some common areas. In that case, if you choose to invite your tenant into your home, it's not really any different from inviting a neighbour.
Presumption of harassment is another issue. If you are homosexual, would you be willing to rent a room in your house to a member of the WBC? There would be a rightful fear of harassment and maybe even danger if you rented to that person and they found out about you.
Harassment? Maybe. Physical danger? Not so much. They're very convinced that God will smite homosexual people, so I don't think they see any need to do it themselves.
But why base your decision on a presumption at all? If a WBC member actually did come to you looking to rent a room, why not simply ask how they would behave? He or she might very well tell you flat out that they'll tell you every day that you're an evil sinner who is doomed to Hell... in which case, feel free to send them on their way.
OTOH, the person might tell you that the reason they're looking for an apartment is that they've just left the church because they find the WBC's views repugnant... which is something that's happened more than once.
Speaking for myself and with the benefit of hindsight, if an 18-year-old
Nate Phelps (one of the Phelps children, who left home early in the morning of the first day he was legally able to do so) had shown up on my doorstep looking for a place to stay and I had turned him away because I had seen him a few years earlier carrying a "God Hates ****" sign, I'd regret my decision today.
The safety of yourself and others in your care/home is paramount and is certainly a deciding factor in whom you decide to share your personal space with. In fact, deciding to rent a room in your house, where you have children, to a convicted child molester or otherwise considered "dangerous" felon, could be considered child endangerment on your part by the state. In these types of cases, discrimination is not only allowable, but required. Safety is foremost.
I'm not saying that any form of discrimination is inappropriate; I'm just saying that any discrimination has to be relevant and reasonable. For instance, if a person has a bad credit history, that's relevant... if you want to get paid your rent, anyhow.
Look, the reason this sticks out so very badly for me is that I live in a duplex. Up until very recently my neighbor was a convicted child molester. I only found this out after they'd been living there a while and I found he gave me the creeps so I did some searching on him. He was on parole after a stint of several years in prison for 3 acts against a minor girl. How comfortable do you think I have been? How worried? If it had been my choice as to whom would rent the other side I would have definitely discriminated against him. And felt no remorse for doing so. I certainly wouldn't let him or any other child molester live within my home. In fact, doing so would be considered child endangerment by the state of Iowa and I could lose my children over it. As I said, in some cases, discrimination is not only allowed, but required.
It strikes me that your concerns aren't really a function of ownership, but proximity. A child molester is more of a danger to his next-door neighbour than to a landlord who lives on the other side of town.
And in the case Kathryn described of an accessory apartment... it's often the case that the next-door neighbour is closer to the apartment than the property owner is. Does this mean that the next door neighbour should have a veto on any prospective new tenants? If a sex offender applies to rent a unit in an apartment building, should the rest of the tenants on the floor (or in the whole building) get the right of approval over the wishes of the building owner?