Dreaming of being in someone else's house can have various interpretations depending on the context of the dream and your feelings during it. Here are a few possible meanings:

1. Exploration of Relationships: Being in someone else's house may symbolize your exploration of your relationship with that person. It could reflect your feelings about them or your desire to understand them better.
2. Personal Boundaries: A house often represents the self or personal boundaries. Dreaming of being in another's house might indicate that you are exploring aspects of yourself that are influenced by that person or that you are considering how they fit into your life.
3. Desire for Connection: This dream may signify a desire for connection or intimacy with the person whose house you are in. It might suggest that you want to be closer to them or learn more about their life.
4. New Perspectives: If the house is unfamiliar or has different decor than your own, it could represent new perspectives or ideas that you are considering. It might be an invitation to explore different aspects of your life.
5. Privacy Issues: If the experience in the house feels uncomfortable or invasive, it might indicate feelings of being exposed or a lack of privacy in your own life.

Reflecting on your emotions during the dream and your current relationship with the person can provide further insights. Consider what feelings arose while you were in the house and how they relate to your waking life.