If the building is run down or dilapidated, this may suggest a personality or body in need of attention, but if the building is well cared for and clean, it suggests confidence and good self-esteem. A building under attack may suggest that someone or something is trying to break in.
If a building is under construction or being demolished, this refers to your own ability to construct and destroy your life.
If the building is familiar, the reference may be to the actual building itself; for example, if you dream of a structural fault, you might want to get the design checked out.
If the building you are exploring in your dream is a public building such as a factory, law court, prison and department store, the building often represents the function suggested by its nature, such as work, education and healing. Bear in mind, though, that if these images appear in your dreams, they will also have personal connections and feelings associated with those buildings. For example, if a factory feels like a museum, both associations should be considered. Finally, consider carefully how you react to the building in your dream. Were you intimidated by it or did you feel comfortable? If the former, your dream may be warning that you are over-reaching yourself in waking life. The latter is more reassuring. [1]