A friend contacted the shop teacher at his local high school. The teacher helped draw up the plans. Students put all the walls, floor, doors, and roof structure together at the school and loaded it on a trailer. My friend had a slab poured to place it on. the day of delivery came and the shed was up, looking great, and painted in half a day. I don't know the final cost but my friend feels he saved a bundle by going this route. Just a thought.