Hearing a doorbell in your dream can mean:
- You're thinking about or wishing for an opportunity, or someone or something new in your life
- You feel someone wants something from you or wants to cross your mental / emotional boundaries (represented by coming into the house in the dream)
- You're feeling someone or something is after you, or perhaps they mean to hold you to your responsibilities
- You're remembering or imagining someone approaching you to talk or interact in some way