Alpha and Beta have house. I believe Beta rents from the university and Alpha rents from a private landlord. Alpha has been in its current house since 1994. Prior to that they moved a few times but have always had a house for the most part.
I believe only A, B, and Gamma have houses but I am curious to see if anyone else has gotten one recently. I lived there and found it to be the only way to be in the know and a great all around experience!