Dreaming of a homeless shelter is read as a sense of insecurity or of being between homes, roles or relationships. It also stands for refuge offered when it is most needed, without judgement.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.