I went to a commuter campus and we were the only sorority on campus that had a house. Both of the fraternities had houses but the other sororities did not. It didn't really matter because everyone always held their meetings at 7:00 on Sunday night at school. We liked to have it up at school because it was easy to set up social events.
Our school just recently began building dorms so Greek life in the future should get very interesting.
Have a nice day