Help! Am I in the wrong?

So me and my boyfriend have been together for almost two years. We're in a serious relationship and I'm ready for the next step. I pretty much already live him. I switched colleges to be closer and a new job. At the moment his dad lives with him or they live together, but he fully supports his dad finncially and they are very close. I'm ready for us to get our own place together and I really don't know how to bring it up without feeling like an insensitive bitch. I really don't know what his dad would do. I just want our own space together