If you want to deal directly with a manufacturer of steel homes, that's the best way to go. They will give you the names of qualified builders in the area where you are located. In most states it requires that you are a licensed contractor with steel construction qualifications or an additional license for steel construction. One larger manufacturer if Tri-steel homes out of Denton, Tx. I think the link is www.tri-steel.com or you can go to search under the same name. Try them first, or at least contact them concerning your project.