In joint tenancy, the joint tenants must have equal rights to possession.
The right of each tenant to the possession and use of the whole property. This unity means that even though one of the joint tenants owns 50 percent of the interest in the property, he or she does not own a legally defined 50 percent of the area. Unity of possession is one of the unity requirements for the creation of a joint tenancy and is the only necessary unity for the creation of a tenancy in common.
The joint tenants, in a joint tenancy situation, have equal rights to possession.