Mich. Comp. Laws § 700.5403: Venue.

Sec. 5403.

Venue for a proceeding under this part is as follows:

In the court at the place in this state where the individual to be protected resides whether or not a guardian has been appointed in another place.

If the individual to be protected does not reside in this state, in the court at a place where property of the individual is located.