This one would easily rank in the top five most common dreams. The house normally represents your life, and the circumstances taking place in the house reflect the specific activities in your life. These dreams may also reflect the church as well.
Individual rooms of the house may represent specific things. For instance, if the bedroom appears, the dream may have something to do with issues of intimacy. The bathroom may represent a need for cleansing. The family room may be a clue that God wants to work on family relationships and so on.