Named perils vs open perils policies

Property insurance is organised around the cause of loss, which the trade calls the peril. A policy can define what it covers in one of two ways. It can list the perils it will pay for and cover nothing else, or it can promise to pay for every direct physical loss and then list the perils it will not pay for. The first is a named perils contract and the second an open perils contract, also sold under the older labels all-risk and special form.

The distinction runs through nearly every property line: homeowners, condo and renters forms, dwelling fire policies for rentals, commercial property, inland marine floaters, even some boat and RV policies. The same event can be paid in full under one wording and denied under the other, and the reason is rarely the event itself. It is which side of the table has to explain it.

How a named perils contract reads

A named perils form states that it insures against direct physical loss caused by a set of perils and then names them. A basic list typically runs to fire, lightning, windstorm, hail, explosion, riot, aircraft, vehicles, smoke, vandalism and volcanic eruption. A broad list adds theft, falling objects, weight of ice, snow or sleet, accidental discharge or overflow of water or steam, sudden tearing apart of a heating or hot water system, freezing, and sudden damage from artificially generated electrical current.

Anything not on the list is simply outside the contract. It is not excluded in the technical sense; it was never included. The distinction matters at claim time, because the adjuster does not need to point to an exclusion. The claimant needs to point to a listed peril and show that it caused the damage.

How an open perils contract reads

An open perils form states that it insures against risk of direct physical loss to covered property, then sets out exclusions. The standard exclusions are earth movement, flood and surface water, power failure originating off the premises, neglect, war, nuclear hazard, intentional loss, ordinance or law, and a group of gradual causes: wear and tear, deterioration, inherent vice, mechanical breakdown, rust, mould, vermin, settling, cracking and the like. Some forms also exclude certain kinds of water damage such as repeated seepage, and most exclude damage from birds, rodents and insects.

Everything not on that list is covered, including causes nobody anticipated when the form was written. If a loss is unusual and the carrier cannot fit it under an exclusion, the carrier pays. That is the value being purchased.

The mechanism that actually differs: who proves what

Under named perils, the insured carries the burden of proving that a listed peril caused the loss. Under open perils, the insured need only show that a direct physical loss occurred to covered property during the policy period; it then falls to the carrier to prove that an exclusion applies. Courts across the region apply that allocation with some variation, but the shape holds. In an ambiguous claim, the burden decides the outcome.

Consider the losses that live in the gap. A pipe leaks slowly behind a wall for months and rots the framing: excluded under open perils as repeated seepage, and also not a named peril, so denied under both. A bookshelf collapses onto a glass table: not a named peril, so denied on a named perils form; not excluded, so paid on an open perils form. Paint spilled on carpet, a dropped television, a car key scratched across a piano, a tree limb that dents a fence without wind: each is a small illustration of the same rule. Neither form pays for the gradual, the intentional or the catastrophic geological causes; the open perils form pays for the sudden and accidental things that were not foreseen well enough to be listed.

A worked example

Suppose a landlord in Henderson insures a rental house on a dwelling fire policy. Say the named perils version costs $1,100 a year and the open perils version $1,300, each with a $2,500 deductible. In the second year, a tenant's bathtub overflows and warps $9,000 of flooring. Accidental discharge of water is on the broad named perils list, so both forms pay $6,500 after the deductible; the extra $200 bought nothing that year. In the fourth year, a heavy mirror the tenant hung falls, shatters and gouges $4,000 of hardwood. No listed peril covers a falling mirror; the named perils form denies, the open perils form pays $1,500 after the deductible.

Now suppose instead that over the same four years nothing unusual happens at all. The open perils landlord has paid $800 more for a broader promise that was never called on, and that is a perfectly reasonable outcome too. The purchase is the breadth, not the expectation of a claim. All figures are invented for illustration.

Who each form suits

The decision has less to do with the property than with how the property is used and what it would take to prove a claim.

• Owner-occupied homes almost always deserve open perils on the dwelling, and it is the default on standard homeowners forms. The question there is whether contents should follow, which is a separate decision on the contents endorsement or form.
• Rental dwellings are where the choice is most often live, because the landlord is not present to see what happened. An open perils dwelling fire form removes the argument about cause after a tenant's unexplained damage.
• Vacant or seasonal properties are frequently written on named perils only, because carriers will not offer open perils on an unattended building. Accepting the narrower form is often the price of any coverage at all.
• Older or poorly maintained buildings may only be eligible for a basic named perils form. Budget for the gap rather than assume the coverage is broader than it is.
• Scheduled valuables, such as jewelry or instruments on a floater, are usually written open perils and worldwide, which is one reason a floater beats relying on the contents form for those items.
• Business personal property on a commercial policy comes in basic, broad and special causes of loss; the special form is the open perils version and is the sensible choice for inventory and equipment that can be damaged in unlisted ways.

Regional notes

In Arizona and southern Nevada, the perils that matter most, monsoon wind, hail, lightning, fire and theft, are all on the broad named perils list, so the everyday gap between the two forms is narrower than it looks; the open perils advantage shows up in accidental household damage rather than weather. In Utah and Idaho, freezing and the weight of ice and snow are named, but ice damming that pushes water under shingles over a season can be argued as gradual under either form, and the burden allocation is what decides it. Earthquake and flood are excluded under open perils and absent from named perils, so the answer in every state is a separate policy for each.

When to keep what you have

If the dwelling is on an open perils form and the contents are on a named perils basis with a replacement cost endorsement, you hold the arrangement most households in the four states hold, and moving the contents to open perils is a modest improvement worth pricing rather than a gap to be alarmed about. If a rental or a seasonal property is on named perils because that is all the carrier would write, the practical response is a maintenance budget and a clear tenant agreement, not a fruitless search for a form the market will not offer.

How to use this

Find the causes of loss wording on each property policy you hold and note whether it lists perils or lists exclusions. For each property on a named perils basis, ask whether the way it is used makes unlisted accidents likely and whether you would be able to prove the cause. We can quote the open perils version against what you hold across the carriers we represent in Arizona, Nevada, Utah and Idaho, and where the narrower form is either the sensible economy or the only one available, we will say so plainly.