Housing was not offered, only the housing stipend. I don't think a contract renewal is ALWAYS a given - I imagine it totally depends on the needs of the unit. The unit has the option to renew your contract for up to a year, and then they have to either hire you on permanently or let you go. Usually if they know you're a good fit and they have a need, they will offer you a permanent position after one or two contracts. I was informally offered a position before my first contract was up, but they were waiting for the approval for the position from the highers up, and I was officially given the permanent position midway through my second contract, and the contract was then just cancelled and I came on as a permanent employee (I had moved permanently to Denver and knew traveling was not in my blood and UCH was a good fit).
Good luck with the interview next week!