So, if you say that's your reason for turning them down, I don't see how you can be sued for discrimination.Google protected classes and discrimination and you should quickly find that you aren't violating any discrimination law, even in SF for this reason, as long as you are consistent and can prove that this was a pre-existing qualification.Now, if they all turned out to be from a protected class (all African Americans, for instance) and you have never used this reason before for turning someone down, it will certainly look suspicious.And really, why on earth is it your problem how your tenants deal with sharing a bathroom? 

I had a San Jose Earthquakes (soccer) rep approach me about a rental for a new player from an African country.

I bought a court house steps in Beaverton and the house next door was in very poor shape etc.. seller would not sell or fix up .. his wife passed in the house and he is just leaving it like that until he pass's people have all sorts of reasons.In an area of Charleston were i am building new construction infill.. its pretty dynamic.. the area was historically 90-% or better African American and now the millennial have invaded a lot of the people living there dont like to see their neighborhood change and the demographics change or a feeling of being pushed out.. these are real feelings folks have. 

One warning sign "danger Africanized bees".

I can provide beds for poor children, backpacks full of schools supplies, or a water well for an African village.I am building my investments in hopes of helping others.

Independence Heights was Texas' first African American municipality, which was later annexed into the City of Houston.