Final answer:
An adverse possessor must possess and claim the property without the owner's consent.
Step-by-step explanation:
An adverse possessor must be able to successfully demonstrate that he or she has been possessing and claiming the property without the owner's consent. Building a permanent structure on the property, occupying the property intermittently and without permission over a period of years, and occupying the property without an occupancy permit are not necessarily requirements for adverse possession.