Well that likelihood is measured as crime per capita, of course. Conditional on someone breaking in, you are much safer in an apartment building. If you live

Well that likelihood is measured as crime per capita, of course. Conditional on someone breaking in, you are much safer in an apartment building. If you live in a single family house and someone breaks in, he or she will probably rob you. If you live in a 100 unit apartment building and someone breaks in, he or she will rob either your unit, or or one of the 99 others. For it to be yours, you need to be unlucky that day, even after the break-in.