I bought a 6 x 4 garden shed from Focus - special offer £95 delivered. My son and I put it together, and on a stone base. We have put vinyl on the floor, bigger than the actual floor so comes up the sides about an inch all round for easy cleaning and hosing down, added round poles for perches and a drawer for a nesting box. A pop hole was cut in the door so they can come in and out as they please and shut in at night. Painted the perspex window black to stop the cockerel crowing too early. Built a larch lap fence all round with a gate - about 36 feet by 18 feet, presently now a sea of mud over type 1 hardcore but sharp sand coming soon to dry it up a bit.