I built my own coop and run and am planning on doubling it soon due to Chicken Math. I want more chickens!
I purchased all my coop supplies at a local hardware store, my sister and cousin found some items on Craigslist or Facebook that people were giving away: old metal roofing panels, pallets...
Building during the winter is a great idea! If you are on a budget, you can purchase supplies little by little. And you have more time to make plans/find plans and tweak things to your liking. I am very excited for you!
I always get very antsy for spring to come to go to greenhouse and to buy...