If you are only planning on raising a couple of chickens then a small coop will do. On the other hand, if you want to have 20 or more chickens then you definitely need a bigger chicken house. Like most animals, chickens also need their own space but the good thing about them is they are not picky. 3 to 4 square feet for every bird is enough to keep them happy. Nesting boxes should be included in large chicken coop plans. While it is true that chickens can share nests with their coop mates, you still have to provide at least one for every three chickens to avoid any conflict or stress. These complete Large Chicken Shack Plans is very affordable at $2.99 only.