Insurance explained

Self-storage and storage unit insurance explained

Reviewed by the Apex broking team · Last reviewed 2026-10-31

Self-storage insurance is the cover that protects a storage operator's site, income and liabilities, and the separate cover that protects customers' goods kept in its units. It matters because the operator is not automatically liable for everything stored, so gaps fall on whoever did not insure.

Part of: Commercial insurance

In short

Self-storage insurance has two sides. Operators buy cover for their buildings or containers, business interruption, public and employers' liability, and their legal liability for customers' goods, often alongside a customers' goods scheme. Customers insure their own belongings or stock through the operator's scheme, a home contents extension or their business property policy. The operator is usually only responsible for customers' goods if it is legally liable, and storage contracts commonly limit that liability, so customers should not assume the operator's insurance protects them. Both sides should check values, limits and contract terms at renewal.

Two sides of self-storage insurance

The phrase covers two quite different things, and most confusion comes from mixing them up.

Operator insurance is bought by the business that runs the storage site, whether a converted warehouse, a purpose-built facility or a yard of steel containers. It protects the operator's buildings, income and legal liabilities.
Customer goods insurance protects the belongings or business stock that customers keep in their units. It may be offered through the operator, through the customer's own home or business policy, or through a separate storage policy.

The two meet in one question: if a customer's goods are damaged or stolen, who pays? Usually the answer depends on the storage contract, the cause of the loss and whether the customer insured the goods. The operator is not automatically responsible for everything in its units, and customers are often surprised by that.

What operator cover usually includes

A self-storage operator's programme is normally built from several sections, subject to the insurer's terms.

Section	What it usually protects	Points to watch
Buildings and units	The facility, partitions, containers, gates, CCTV and fixtures	Rebuild values; container sites are valued differently from buildings
Contents and equipment	Office equipment, lifts, forklifts, packaging stock for sale	Breakdown is often a separate engineering cover
Business interruption	Lost licence fees or rent if a fire or flood closes all or part of the site	Indemnity period long enough to rebuild and re-let units
Public liability	Injury to customers and visitors, or damage to their property, caused by the operator's negligence	Activities such as van hire or removals may need disclosure
Employers' liability	Injury to staff; a legal requirement for most employers	Lone working and manual handling
Storekeeper's or warehousekeeper's legal liability	The operator's legal liability for customers' goods in its care	Responds to liability, usually limited by the storage contract
Customers' goods scheme	Cover for customers' goods arranged by the operator for customers who choose it	Clear terms, limits and exclusions given to customers

Our page on self-storage insurance for operators covers these sections in more detail. The property side follows the same principles as any commercial property insurance, including the average clause, and operators with larger sites often add terrorism cover.

Customers' goods: who is liable when something goes wrong

In legal terms an operator holding goods for a customer may be a bailee, but self-storage agreements are often written as licences to occupy space, where the customer keeps the key and the operator never takes the goods into its care. That difference, and the contract wording, matter a great deal.

Where the operator was negligent, for example by failing to repair a leaking roof it knew about, a customer may have a claim. That is what the operator's liability cover is for.
Where nobody was at fault, such as a lightning strike or a burglary despite good security, the operator may have no legal liability, and the customer's loss falls on the customer's own insurance.
Contract terms commonly limit the operator's liability and require the customer to insure. Such terms are subject to the Unfair Contract Terms Act 1977 for business customers and the fairness rules in the Consumer Rights Act 2015 for consumers.

The European self storage industry association, FEDESSA, tells customers that goods worth storing are worth insuring, and that providers should either offer insurance or point customers to a third party that does. It also expects operators to hold their own insurance in case they are found liable.

Uncollected goods are a separate issue. In England, Wales and Northern Ireland, section 12 of the Torts (Interference with Goods) Act 1977 gives a bailee a power to sell uncollected goods in some circumstances, usually after giving the owner notice, and requires the proceeds to be accounted for, subject to the terms of the bailment. Operators normally rely on their contract terms as well, and should take advice before disposing of goods.

How customers insure goods in a storage unit

Customers usually have three routes:

The operator's scheme. Many sites offer cover for goods based on a declared value. It is convenient, but customers should read the limits, the excess and what counts as a valuable item.
Their own home contents policy. Some home policies extend to goods in storage, often with limits, a time restriction or a requirement to tell the insurer. Many do not, especially during a long move.
Business stock or contents cover. Businesses storing stock or archives can often add the unit to their own property policy as an additional location. Retailers and online sellers should check stock limits there, as our retail insurance page explains.

Illustrative example: a household puts furniture into storage for six months while renovating. Their home insurer limits cover for goods away from the home, so they buy cover through the operator for the declared value of the furniture.

Illustrative example: an online seller keeps stock in two units. It adds the site to its business property policy and raises the stock sum insured before the busy season, rather than relying on the operator.

Common misunderstanding: the operator's insurance covers my goods

The operator's own property policy protects the operator's buildings and equipment, not the customers' belongings. Its liability cover only pays if the operator is legally liable, and the storage contract often limits that liability. Unless the customer has bought cover through a customers' goods scheme or their own policy, a fire caused by something outside the operator's control can leave the customer uninsured.

Operators also sometimes assume that offering customer cover removes their own exposure. It does not: a negligence claim can still arise, and customers' goods schemes need to be described clearly so customers understand what they are buying. Operators running warehouse or logistics services alongside self-storage should make sure each activity is disclosed, because holding goods in your care under a warehousing contract is a different risk from licensing space.

What to check before buying or renewing

For operators:

Are building, container and contents values current, and is business interruption cover long enough to rebuild and re-let? See business interruption insurance.
Does your storage agreement limit liability clearly and fairly, and does it match your liability insurance?
Are customers' goods cover, its limits and its exclusions explained in plain terms?
Are public liability and employers' liability limits adequate for visitors, staff and any van hire or removals?
Do security, fire detection and prohibited goods rules match your insurer's conditions? Our page on property exclusions covers the usual ones.

For customers: check whether your own policy covers the unit, declare a realistic value, keep an inventory with photos, and do not store prohibited items such as flammables or perishables.

Apex arranges self-storage insurance for operators; a broker reads every enquiry.

Sources

Frequently asked

Do I need insurance for a storage unit?

Most operators require customers to insure their goods, either through the operator's scheme or another policy. Even where it is optional, the operator is usually only responsible if it is legally liable for the loss, so goods damaged by an event outside its control may not be covered without your own insurance.

Does home insurance cover items in a self-storage unit?

Sometimes. Some home contents policies extend to goods in storage, often with a lower limit, a time limit or a requirement to tell the insurer. Others exclude it. Check your policy wording or ask your insurer before moving goods into storage.

Is the storage company liable if my things are stolen?

Only if the operator is legally liable, for example through negligence, and subject to the storage contract, which commonly limits liability. A burglary despite reasonable security may not make the operator liable, which is why operators usually require customers to insure their goods.

What insurance does a self-storage business need?

Typically buildings or container cover, contents, business interruption, public liability, employers' liability and storekeeper's legal liability for customers' goods. Many operators also arrange a customers' goods scheme and terrorism cover. The mix depends on site type, size and any extra services such as van hire.

Can a self-storage operator sell goods left in a unit?

In some cases. Storage contracts usually set out what happens if fees go unpaid, and in England, Wales and Northern Ireland the Torts (Interference with Goods) Act 1977 gives bailees a power of sale for uncollected goods, usually after notice. Operators should take legal advice first.

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Apex Insurance Brokers Limited is authorised and regulated by the Financial Conduct Authority. Registered in England and Wales, company number 07014570. This page is general information, not advice on your individual circumstances, and it does not guarantee that cover will be available or on what terms.