Well designed shed, looks a lot more expensive than it is. Spend the time building a solid, level base, and assembly is a cinch. It will require two people to assemble, and took me about 7 hours once the foundation was built for the 15ft length version. I built the foundation out of 2x8 treated lumber, set with a deck like foundation, and topped it with OSB boards, waterproofed with roofing membrane at the edges. That took me 3 days to build. Make sure you do not put the window panels at the back of the shed. Wayfair shipping was very fast - I got it in a week, and with the small fee for the lift gate service, the shed was delivered right into my garage. The lift gate service is absolutely essential - the 15ft version is about 1000lbs and in 3 large boxes on a skid.