before someone gets their drawers in a wad , i too did it my garage , in a small barn out back, all the way to 10k sqr ft. i live on the farm now and have a 40x90 shop. i've waited a lifetime for it. so i'm not saying guys doing it on the side are bad. theres snakes in any grass. just be careful. some of the baddest painters i knew never had a shop. just a lot of talent.