WELCOME TO MID VALLEY STRUCTURES Serving Michigan as the Leading Retailer of Storage Sheds, Barns, Garages, and Portable Buildings! At Mid Valley Structures, we offer the finest, highest quality barns, sheds, garages, steel buildings and outdoor structures in Michigan! Choose from our huge selection of Amish built sheds, barns, cottages, and more. We have affordable purchase options, or you can rent to own with no credit check.