I am not sure I fully understand your question. Are you a non-profit that wants to provide services to a homeless shelter? Most non-profits are subject to the same licenses, permits, and inspections as a for-profit business. If the homeless shelter is already licensed, then talk with them to see if you fall under their inspection and licensing or if you might need your own. They can tell you which agency in your state licenses and inspects homeless shelters and who you should contact for information.