Ave Maria requires all its undergraduate students to remain on campus, unless they are married, older than 22, or has some specific situation that requires them to live off campus. However, there are even older students who remain on campus simply because of the convenience. Also, Ave Maria gives a lot of financial aid, so it the cost becomes a little more bearable.
If you can and are looking for off-campus housing, there are a lot of residential areas in Ave Maria, as well as in Naples. La Piazza offers condos and is by far the nearest to the school, though the prices may burn big holes in your pockets. There is also Del Webb, Middlebrooke, and Emerson Park, which offer homes and townhouses rather than condos with varying prices. There may also be affordable apartments and condos in Naples, but the distance from the University may not be worth it.