Can I decline a housing offer?

Yes, but there are some limitations especially for student housing.

Especially for student housing

Your waiting list number will be paused after 1 decline/fail to respond. You can always re-activate your “boligsøgning” in Mit KAB.

If you decline or fail to respond to 2 housing offers from the same department, the department will be removed from your waiting list. If there are no more departments on your waiting list, it will be deleted.