What could this dream mean?

Your running from unknown, fearful events in your life, and you feel that you need to "hide" in a safe haven, trying to protect your psyche from these threats. (Top floors symbolize you feeling secure and safe). And no matter how much you try to run from these fears, they will catch up to you, and plunge you down to the depths of your psyche. They doesn't signify the death of something, but rather the end of something familiar in life. (Stairs signify the steps we take in life).