Self storage facilities generally hire a relatively small number of employees. It is normal for them to have a watchman or security guard on duty at all times.
Those offering portable storage also hire drivers, although some containers may be towed by the client with their own car. In some cases the same company may also offer moving services, usually door to door, either self drive or with drivers.
In most cases, the personal property in the containers or garages is kept at the owner's risk, although the facility may face liability if negligence, such as malfunctioning doors or lost keys, is proved. Some storage facilities may be highly specialized. For example, some might specifically offer winter storage for RVs or boats. Mini storage facilities generally just hold small items of furniture or valuables.
Facilities generally rent units on a monthly basis. Price is usually determined by unit size and available space. Moving services may be charged by the hour. Thus, storage facilities handle a fair amount of money. They require bookkeepers and secretarial staff who handle the financial side of the business. In some cases, a storage company may find themselves holding all of the worldly goods of a temporarily homeless person. In many, however, storage is simply used for items that will not fit in the limited space of a smaller home or apartment. If a client defaults, storage companies need to retrieve the rent they are owed. They may, thus, have to work with collection companies. Depending on the law, they may be in a situation of selling goods to recoup unpaid rent.
Self storage facilities are fairly numerous and likely to remain so into the future.