Most carports start at about $695 for a 12' x 21'. We have a listing on BYC under "Everything Else For Sale" section. Turkeys perfer to roost in trees, so you need to provide something they will like. Once they get a habit of roosting somewhere, it is difficult to break them. Thus if they grow...
Here is Frank Reese JR's Carport turkey coop. http://www.goodshepherdpoultryranch.com/Photos2.html Frank also has photos of free range turkey nests etc on his site.
P. Allen Smith's Cotton Trailer Coops. http://www.pallensmith.com
ETA: We can help with the carports; however, I have no...
We are building a similiar coop to the one below for our Turkeys. The frame is built and we are putting the finishing touches on it. It is 8'W x 10' L x 8'H. We are placing several roosts in it at about 6'2 high (to clear my 6' head). The nests will be on a shelf 3' off the ground so they can...