GreenRoofChickenCoop.com is a niche product in the market of chicken coops. Currently, they only have the original chicken coop that houses 2-4 chickens but they do have a modification that can be provided on request that will expand the chicken coop up to 6 chickens comfortably. The modification changes the design from a cube (4ft x 4ft x 4ft) to a rectangular cuboid (6ft x 4ft x 4ft). We only know about this modification because we asked about it. Also, the do claim to be working on a variety of green roof chicken coops that house up to 15 chickens. We asked if they planned on making even bigger structures (since their plans were designed by an architect), and they said, "Sure, but it's not in works at this time." They noted that they were currently catering to the back yard chicken coop market and believe that people getting into larger flocks of 25 or more are working more towards a small farm. They're just taking it one step at a time! One step at a time is exactly how the instructions are written, truly step-by-step and very detailed. The instructions for this one chicken coop are almost 60 pages including cut lists and shopping lists. They are well thought out and following these instructions page by page is the quickest way to get this chicken coop up and running. If you're looking for a small back yard chicken coop, you should swing by and take a look at this chicken coop. Picture below... just click through one of the links to get to their website.