Anonymous wrote:Probably the state where he currently is. Ask.
Since he has property in different states, it might be easier to put the property in a revocable trust to avoid probate.
Likely in the state he was moved to but it isn't that easy. The real question is has he established residence and/or domicile in the current state he moved to? If for example, he moved because the OP moved him and he didn't want to move, there is an argument that he is still a resident of the Midwest state he resided in before being moved.
Saying that the best move would be to sell all the assets and locate them in his current jurisdiction at a minimum. Alternatively, setting up a revocable trust would avoid probate particularly if he is now considered to reside in jurisdiction A and owns real property in jurisdiction B. That means opening probate in 2 jurisdictions - that means more time, more money, more anguish.