Jdm structures was established in 1992, in millersburg, oh - holmes county and is a business listed in the categories storage sheds & buildings and sheds & buildings. Jdm barn structures has quality built storage sheds, garden sheds, and playhouses. custom built 1-4 car garage and storage barns. kaffman lawn furniture in ohio. Jdm structures makes some of the finest barns and outdoor storage units. this video was used by the company's dealers to educate customers about the.