Decks and balconies, on the other hand, are subject to fewer requirements and are not evaluated for lot coverage. However, if you plan to build any walls or fences around your home, they will need to be at least 30 inches high to meet building code requirements in most areas. You also need to determine how much coverage each deck or balcony has. If you put more than two square feet of surface area into a single room, it is considered a separate occupancy and requires its own permit. Therefore, if you add a deck or balcony to your house, you will need to file an application with your local government office. A house trailer is classified as a mobile home and is regulated by the federal government's Interstate Highway Commission (IHC). It must be placed on permanent foundations and cannot be moved without a new license being issued by the IHC. The IHC does require that you cover the trailer with material that provides shelter and protection from the elements. For example, it can't just be left up against a wall like a tent. In conclusion, a deck or balcony is like a room added to your house.