Castle Storage is a self storage warehouse located in Waterloo, IA, serving the surrounding areas. As a full service storage facility, we rent out both commercial and residential storage units for the convenience of our clients. We offer access to secure dry storage and outdoor storage units 24 hours a day, 7 days a week. Climate controlled access 6:00AM-10:00PM, 7 days a week. We provide month-to-month or long term leases.