To dream that you live in a senior home (but you don’t really live in one in real life) means that you are becoming too dependent on others. You need to take responsibility and control of your own life.
To see or dream that you are visiting a senior home implies that you need to reconnect with some elderly person in your waking life. Perhaps you have been neglecting that relationship.
To dream that you volunteer in a senior home suggests that you need to be more respectful or compassionate of others, particularly people who are older than you.