Tdhorne, it appears you are trying to read between the lines (of code) when it comes to the definition of a mobile home. If you read both the definition of a mobile and a manufactured home, you should realize your mistake. The code DOES NOT say that all units larger than 8X12 or 320ft.sq. are always manufactured homes. It only says that is the minimum size for a manufactured home. Mobile homes can be either bigger or smaller than the dimentions given.