Well, looks like more housing for mathematicians.
For the next 4.2 months, I'm living in a rental in Oakland, while visiting the Mathematical Sciences Research Institute in Berkeley (it's not part of UC, just on land they donated to get it to be located there, and you can get to it without going throug the parts of the city and campus notorious for their lunacy). My landlady only rents to people who are sent her way by the housing office of MSRI, and mathematicians are generally a fairly law-abiding lot, so not being able to do a criminal background check will be no problem for her.