☾House or Building
Houses in dreams typically represent the self or psyche. Different rooms symbolize different aspects of your personality. The condition of the house reflects how you feel about yourself — a well-kept house suggests confidence, while a crumbling one may indicate neglect of self-care.
Psychology
In psychoanalytic theory, the house is one of the most direct symbols of the self. The basement represents the unconscious, the attic represents higher thinking or forgotten memories, and the main floor represents everyday consciousness. Discovering new rooms suggests discovering new aspects of yourself.
Spiritual
Many spiritual traditions view the house as a temple of the soul. A house in good repair suggests spiritual well-being. Finding hidden rooms can represent undiscovered spiritual gifts or past-life memories. A haunted house may indicate unresolved spiritual baggage or ancestral energy that needs clearing.