One of the things that has surprised me these last couple of months is the wide variety of space limitations that we face as campus ministries. For instance, here at MSU, in order to host any event on campus, we first needed to gain recognition as a Registered Student Organization (a process which involved writing a constitution that matched MSU's requirements, setting up financial accounts at the university, and more than a few headaches). Now, as an RSO, every event we host on campus is scheduled through the Department of Student Life. My office is off-campus, at River Terrace Church across the street. All (denominational) campus ministries are based out of the churches that border campus; parachurch ministries house themselves primarily in individual dorm buildings or rent/own buildings on the border of campus.
As you can imagine, this makes for a very different dynamic for getting involved on the campus than, say, a campus ministry housed out of the Chaplain's office.
How accessible is space on your campus? Are you located primarily on- or off-campus? If you are based off-campus, how do you get on-campus?