Whether or not he’s taken up residence elsewhere does not matter, at least not in any state I’m familiar with. The rights of an owner to the property do not depend on whether or not he or she resides on the property. Let’s suppose Fred and George co-own Blackacre and George has not lived on Blackacre for the last 10 years. But he now wants to live there. As a co-owner of the property, he has a right of possession and has the right to move in and live there, even if Fred doesn’t want him there. The exception would be, of course, if Fred had a court order barring George from the property.

