Hello everybody, We built the Catawba coop. When you buy the Catawba coop plans you also get a file of the plans made with a free program called Google Sketch Up. Because I'm a geeky girl I downloaded the program and started to play with it. We love the original coop but now after having our girls for a couple of months we decided we'd like to extend their run. So yesterday, I sat down a the computer and used that Sketch Up program to design the extension. At first we thought we'd simply build a 2 foot high frame and cover it in hardware cloth but then, after looking at some of the other coops you folks have made, and realizing that chickens do like to hop up to tall places, we decided to build essentially, a tall box that can be placed at one end of the coop. I don't know if you can see much detail of what I drew with that Sketch Up program but it's going to be 4 feet wide, 5 feet long and 6 feet tall. After I had it drawn I decided I might as well put a door on it so I changed that too. What was so much fun about planning this with that program was that (as I changed my mind and decided to make a solid roof rather than a wire roof, I realized that I should slope the roof slightly), I could make those changes really simply. Sure beats using a pencil, eraser and a ream of graft paper. Anybody else have experience using this program? Barbara.