This probably varies regionally, but in my experience it's become pretty common for landlords and even HOAs to prohibit roommates (other than family members) th

This probably varies regionally, but in my experience it's become pretty common for landlords and even HOAs to prohibit roommates (other than family members) these days. A handful of municipalities have even put it into law for single-family zoning. I gather it's considered to be a marker of "troublesome" people.