An administrative fee or 'admin fee' is a one-time fee that the facility will charge at the time of move-in. This is very common and is used to offset the costs of setting up your tenant account and processing paperwork. Usually the admin fee is between $15-$25, although in some cases it can be more. Sometimes this fee may even replace your security deposit charge.
Tax amounts will vary depending on where you're renting and you’ll also need to provide your own lock for your unit, which can range from $5-$50. Additional things you may be charged for include dumpster service, electrical charges, etc.