all we had to buy was the wheels and roof panel and then we bought handles just to get it done, but the rest is left-overs from the main coop. I love that it fits between my raised beds. I love that it's in two parts - one transportation unit, one docking station. I don't love that it turned out a little crooked/unsquare... or that it doesn't fit snugly together. I will figure that part out.