Houses on campus are bigger than those off campus

学校 外边的 房子 比 学校 里边的 大 一些。 The houses outside the university campus are a bit bigger than those inside.

my pleasure

Ah, okay! Thank you!

yes, some universities or schools have their own house for teacher. Furthermore, in this sentence 房子 can also mean dormitory or flat. 房子 is a general meaning of a place to live