The requirements vary (sometimes significantly) between jurisdictions and unfortunately we don’t have many choices except for complying with whatever the local law says, around my place they don’t allow metal sheds… don’t ask me why.
The accessory building location (shed) may be regulated by zoning code. Since I don’t know where exactly are you in Michigan you can try to go to http://www.law.msu.edu/library/substantive/local.html
, click on your location from the list and when it opens type “accessory buildings” in a search box (top right), click “Go”.
Let me know if this helped.