A row of purple roller-shutter storage doors

Storage rules

What can’t you put in a storage unit?

Every facility has its own list, set out in your contract, but the banned items are broadly similar across the US, UK and Europe. Here’s what to leave out, and why.

Photo: JOSHUA COLEMAN on Unsplash

Items storage facilities usually ban

  • Flammable or hazardous materials: petrol or gasoline, gas bottles, paints and solvents, chemicals, fireworks
  • Food and perishables: they attract pests that can spread to other units
  • Living things: people, pets and plants
  • Illegal items: stolen goods, drugs, and in many places weapons and ammunition
  • Anything wet, smelly or leaking, including waste

Items that may need permission

  • Vehicles: often allowed in drive-up units if registered and insured. See vehicle storage.
  • Business stock: usually fine, but some facilities restrict certain goods
  • Batteries and engines: may need fuel drained or batteries removed

Allowed, but better kept elsewhere

  • Cash, jewellery and irreplaceable documents such as passports: a safe or bank deposit box may be better
  • Family photos and heirlooms, unless the unit is climate-controlled
  • Things you’ll need often

Why the rules matter

Breaking the rules can cancel your insurance, end your contract and put other customers’ belongings at risk. If you’re unsure about an item, ask the facility before you move in.

Last updated: 13 October 2026

Frequently asked questions

Can I store a lawnmower in a storage unit?
Often yes, but many facilities require the fuel to be drained first. Check the facility’s rules.
Can I store tinned food in storage?
Many facilities ban all food, including tinned or canned goods, because of pests. Check your contract.

What do you need to store?