Every storage rental agreement includes a list of prohibited items. Some prohibitions are obvious; others surprise first-time renters. Violating them doesn't just risk your lease — it can void your insurance coverage, expose you to liability, and in some cases result in criminal charges.
Universally Prohibited Items
Hazardous Materials
No self-storage facility permits flammable, explosive, or toxic materials:
- Gasoline, diesel, propane tanks (even empty tanks with residue)
- Ammunition and gunpowder
- Paint (flammable in quantity)
- Pesticides and herbicides
- Industrial chemicals
- Batteries containing acid (car batteries)
- Asbestos-containing materials
Why: Fire risk to the entire facility. One improperly stored gas can puts dozens of other renters' belongings at risk.
Living Things
No animals, plants, or living organisms of any kind:
- Pets (even temporarily)
- Plants
- Insects (even in sealed containers for collectors, in most cases)
Why: Animals require care and can cause damage; plants die and attract pests; living organisms in enclosed spaces create sanitation and liability issues.
Perishable Food
Most facilities prohibit all food, or at minimum all perishable food:
- Fresh or frozen food of any kind
- Canned goods (sometimes permitted in limited quantities)
- Pet food in open containers
Why: Food attracts rodents and insects, which spread through the facility and damage other renters' belongings. A pest infestation can cost a facility — and other renters — thousands in damage.
Stolen or Illegal Property
- Items known to be stolen
- Illegal drugs and paraphernalia
- Counterfeit goods
- Illegal weapons
Why: Storage units are legally accessible to authorities with a warrant, and facilities cooperate with law enforcement. Using a storage unit for illegal goods is well-documented in police reports — it's not as private as people assume.
People
You cannot live in a storage unit:
- No sleeping, eating, or inhabiting the unit
- No using it as a business office or workspace (in most facilities)
- No allowing others to stay there
Why: Storage units are not zoned as living spaces. Facilities that knowingly allow occupation can face liability and legal consequences. It also endangers the person — there is no ventilation, climate control (in most units), or emergency access.
Sometimes Prohibited, Sometimes Allowed
Firearms
Guns themselves are generally allowed in storage (locked cases, non-loaded). Ammunition is usually prohibited separately. Check your facility's specific policy.
Vehicles
Cars, motorcycles, and boats are allowed at facilities with vehicle storage lots or large units. Most standard indoor units are not sized for vehicles. Running vehicles in enclosed units is always prohibited due to carbon monoxide risk.
Wine and Alcohol
Personal wine collections are generally permitted. Commercial alcohol requires a liquor license and is more restricted. Climate-controlled storage is recommended for wines.
Medical Equipment
Most medical equipment is permitted. Oxygen tanks and medical gas cylinders are treated as compressed gas and may be restricted.
What Happens If You Store Prohibited Items
Lease Termination
Facilities can and do inspect units (usually with notice) and terminate leases immediately for prohibited items. Your belongings may be removed and you may be billed for disposal costs.
Insurance Void
Storing prohibited items typically voids any insurance coverage on your unit. A fire caused by improperly stored gasoline? Your claim will be denied, and you may be liable for damage to adjacent units.
Criminal Liability
For truly illegal items (stolen goods, controlled substances), storage doesn't provide the protection people expect. Law enforcement regularly works with storage facilities. A court order or criminal investigation can result in your unit being opened.
Frequently Asked Questions
Can I store a gun safe with firearms in a storage unit?
Generally yes — firearms in a locked, secure container are permitted at most facilities. Ammunition is often prohibited separately. Check your specific facility's rental agreement and local regulations.
Can I store a car in a storage unit?
Only in units designed for vehicle storage (typically 10×20 or 10×25 drive-up units) or in dedicated vehicle storage lots. Standard indoor units are usually too small. Running a vehicle inside any enclosed unit is prohibited.
What happens if I store food in my storage unit?
You won't be immediately caught, but food attracts rodents. Mice and rats in a storage facility cause widespread damage — they chew through boxes, furniture, upholstery, and even wiring. If a pest infestation is traced to your unit, you may be held liable for remediation costs.
