I am in the same boat except I didn't bother applying for any on campus accomodation. I am living with my boyfriend now and that it the plan when I go to uni, but uni starts in 3 weeks and there is no way he is going to get a job before then! He earns too much now just to leave his job without having another one, so he is going to have to live up here and me down there until he gets a job. we can't afford to be paying two lots of rent so I am going to have to live in share accomodation for however long it takes him to get a job.
My suggestion would be to do what I'm doing... look in the caberra times (they have a website) classified section for share accomodation and start to get in contact with people now. If you have family friend in canberra that maybe you could board with thats another good idea, just in the short term until you can organise more permanent accomodation (I am looking into that too!)