I have been raising chickens for about 10 years and have gone through many different style coops, both permanent & mobile and I've developed a mobile chicken coop that makes keeping up to 12 chickens very easy with very little maintenance.
Most of the materials can be found at Lowes including the roof plastic, wheels, bucket, hoses, wood, fencing, bolts, and PVC pipe. The wood could also be salvaged from new home construction dumpsters as they throw out a lot of slightly warped wood. The water nipples can be ordered from amazon.
In an effort to promote individuals becoming more self sufficient by producing more of your own food, raising chickens is a corner stone as they can reproduce without any interference with a broody hen, they provide eggs, meat, and valuable manure for your compost and garden.
I invite the Steemit community to copy and make your own improvements to this design and I would love to see pics of any produced. I will answer any questions you may have about the construction or about raising chickens in this post.