It may well might be more local than "all of MI" (plausibly only A2?). It was admittedly second hand, but when I lived out there a friend (with local parents)

It may well might be more local than "all of MI" (plausibly only A2?). It was admittedly second hand, but when I lived out there a friend (with local parents) noted that their property taxes went up even though their house value had plummeted, because the value was still above the assessed value. I remember being mildly surprised because I had also not heard of such a system outside California.