Class A storage shelter, barn or garage.

If it was me, I would set down with a clean sheet of paper and write the specs of what I want in a building. I would look at a pole barn style and prefer wood construction as wood absorbs humidity and steel tends to sweat if your building is unheated.. Then I would contact 2 or 3 local contractors to one at a time come over, inspect the building area, and give me an estimate on erecting this building. If you have friends who have already had work done by them and are satisfied that would be a plus... Then decide from there..