Definition:Special form coverage
📋 Special form coverage is a type of property insurance policy structure — sometimes called "all-risk" or "open-peril" coverage — that insures against all causes of loss unless a peril is specifically excluded in the policy language. In contrast to named peril or broad form policies, which list only the covered causes of loss, the special form shifts the burden of proof: the insurer must demonstrate that an exclusion applies rather than the policyholder having to prove the loss falls within a covered category.
🔍 Under a special form policy, the insuring agreement is deliberately expansive — typically reading along the lines of "direct physical loss or damage unless otherwise excluded." The policy then narrows this broad grant through a schedule of exclusions such as war, nuclear hazard, earth movement, flood, wear and tear, and intentional acts. Endorsements may add back certain excluded perils for an additional premium — for instance, earthquake or equipment breakdown coverage. This structure is standard in commercial property lines and is the foundation of the ISO CP 10 30 causes-of-loss form widely used across the United States.
✅ Opting for special form coverage gives businesses meaningfully broader protection than basic or broad form alternatives, which can leave gaps for unusual or unforeseen perils. For risk managers, this breadth simplifies the coverage analysis: instead of checking whether a specific peril is listed, they need only confirm that no exclusion removes it. The tradeoff is a higher premium relative to more restrictive forms, but many underwriters and brokers consider the special form the default starting point for well-managed commercial accounts. When coverage disputes arise, the open-peril structure often favors the insured in litigation, reinforcing why careful policy wording and exclusion drafting are critical on the carrier side.
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