Since there is already a list on this site about the different architectural styles of houses in the world, and we do not want to re-list the same houses again. We want to define what makes the "types" we are writing about. In order to be considered "different" on this list, the house has to have a significant difference in form and/or function. For example a Colonial home would not be considered different on this list. But a Colonial home and a Mobil home would be considered different.