What it means
Property insurance answers one question in two different ways. Named-perils policies list the causes they cover, while all-risks policies cover everything and list only what they exclude, which quietly shifts the burden of proof at claim time.
The burden shift is the practical heart of the matter. Under named perils the insured must prove the loss came from a listed cause, whereas under all risks the insurer must prove that an exclusion applies, a far friendlier starting position for the policyholder.
Exclusions carry the whole weight of the contract. Wear and tear, gradual deterioration, faulty workmanship, war and nuclear causes are standard exclusions, and the real coverage question is always what the carve-outs say.
The label overpromises by design, since all risks never means all losses, and reading the exclusions schedule is the only way to know what the policy actually does. Pricing reflects the breadth, because all-risks cover costs more than named perils for the same property, and the premium is the market price of transferring ambiguity risk from insured to insurer.
The format dominates commercial property, since business interruption and commercial property programmes typically run on all-risks wording, given that enterprises cannot catalogue every way their operations might be damaged. Underwriters lean harder on surveys, valuations and loss history for this business, so good risk data earns better terms.
Valuable items policies use the wording too, because jewellery, art and equipment floaters face perils too varied to name. When novel losses arrive, all-risks policyholders start covered unless excluded, while named-perils holders start uncovered unless listed.
Brokers therefore push clients toward the wording at placement, even at a higher premium. Documentation still decides claims, because proving the loss, its timing and its amount remains the insured's job even under all risks.
Renewal wording deserves an annual read, since insurers revise exclusions over time and an unexamined policy can quietly shed perils the buyer assumed were covered. For a manager buying property cover, the choice is explicit: pay more for all risks and argue about exclusions later, or save premium for named perils and carry the risk of the unlisted catastrophe.
In practice
Real-world examples.
Example
A warehouse suffers damage when a delivery drone crashes through the roof. The peril was never named in the policy, but the company's all-risks cover responds because no exclusion applies. The insurer would need to point to a specific exclusion to decline the claim, and in this case it cannot.
Example
A homeowner's named-perils policy declines a loss from a cause that is not on its list. Next door, a neighbour holding an all-risks policy claims for an identical event and is paid because the cause is not excluded. The two families face the same damage but reach very different claim outcomes.
Example
An insurer denies a machinery claim by pointing to the wear-and-tear exclusion. It must carry the burden of showing that the damage was gradual rather than sudden, which it attempts with the maintenance history and a failure analysis. The manufacturer may dispute the finding under the policy's claims procedure.
Case study
Seen in the real world.
A made-up boutique hotel suffers ceiling collapse from long-hidden pipe corrosion. This case study is fictional and illustrative. The insurer invokes the gradual-deterioration exclusion, but the hotel's maintenance logs show annual inspections; the parties settle on a split payment, and the hotel upgrades its leak-detection regime. The fictional Harbourview Hotel's owner had assumed that all-risks wording meant every loss would be paid, so the insurer's first position came as a shock.
The adjuster's report stated that the corrosion had been developing for years, which is the classic gradual-deterioration pattern the exclusion targets. The owner's broker showed that the logs proved regular inspections but not that the pipes had been replaced in time, which turned the dispute into a question of evidence rather than of wording. Both sides agreed to split the repair cost, and the leak-detection upgrade reduced the risk of a repeat loss. The owner's lesson was that records, not the policy's label, decide how an all-risks claim ends.
Watch out
Common mistakes.
- Believing the name; all risks excludes plenty, and the exclusions schedule, not the label, defines the real coverage.
- Choosing named perils to save premium without mapping risks; unlisted catastrophes are exactly the ones nobody imagined, and all-risks cover exists for that blind spot.
- Neglecting evidence at claim time; the favourable burden of proof does not remove the need to document the loss, its cause and its quantum with records.
Questions
People also ask.
What is all-risks insurance?
Property coverage protecting against any cause of loss except those specifically excluded in the policy. It reverses the named-perils approach, which covers only listed causes.
Does all risks really cover everything?
No. Standard exclusions remove wear and tear, gradual deterioration, faulty workmanship, war and similar causes. The exclusions schedule defines the true boundaries, and reading it is essential.
Why is all-risks cover more expensive?
Because the insurer accepts ambiguity. Any unlisted cause is covered and the insurer must prove exclusions at claim time, so the premium prices risks nobody can name in advance.
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