That's just weird ... sorry, but it is. I've never heard of any student, anywhere, taking their parents to university with them. Apart from anything else, rooms in halls are usually singles - where are the parents planning to sleep? I honestly can't see the Accommodation office agreeing to that one, and can you imagine how unpopular he'd be with his flatmates?? I'm amazed that anyone is so brainless that they actually think that this happens ...
If he can't bear to leave his parents, then why doesn't he just apply to a local university and live at home?