While prefab just doesn't seem like it's cutting the proverbial mustard for houses, it may have a chance with dog houses. This great design by Jason Valalik is creating some good buzz around the internet, and for good reason. The design is nice and clean, and the materials, a mix of hardie board and Ipe, are great for standing up to a lot of abuse. The design is simple enough that assembly would be easy. So far I don't think he has a kit for sale, but stay tuned.