2.1 Causes of Loss / Named-Peril vs. Open-Peril

Causes of Loss: The Trigger of Every Property Claim

Property insurance pays only when a covered peril (a cause of loss) damages covered property. The exam tests the distinction between three terms. A peril is the cause itself — fire, wind, theft. A hazard is a condition that increases the chance or severity of a peril. A loss is the financial harm that results.

A frayed extension cord is a hazard; the fire it ignites is the peril; the burned kitchen is the loss. Hazards come in three flavors the exam loves to test: a physical hazard (the worn cord), a moral hazard (an insured who would deliberately cause a loss for gain), and a morale hazard (carelessness because insurance exists). Questions frequently swap these terms, so anchor each to a concrete example.

Named-Peril vs. Open-Peril (Special) Coverage

The single most-tested concept in property is who carries the burden of proof. Under named-peril (also called specified peril) coverage, the policy responds ONLY to perils explicitly listed, and the insured must prove the loss came from a listed peril. Common named-peril forms include HO-2 (broad form), the DP-1 and DP-2 dwelling forms, and the ISO commercial Causes of Loss – Basic (CP 10 10) and Broad (CP 10 20) forms.

Under open-peril coverage (historically "all-risk," now called the special form), the policy responds to ALL direct physical loss EXCEPT what it excludes. Because every unlisted cause is covered by default, the insurer must prove an exclusion applies in order to deny. Open-peril examples include HO-3 (open-peril dwelling, named-peril contents), HO-5 (open peril on both dwelling and contents), and the commercial Causes of Loss – Special form (CP 10 30).

The Standard Named-Peril Ladder

ISO builds commercial coverage in widening tiers. The Basic form (CP 10 10) covers fire, lightning, explosion, windstorm/hail, smoke, aircraft/vehicles, riot/civil commotion, vandalism, sprinkler leakage, sinkhole collapse, and volcanic action.

The Broad form (CP 10 20) keeps the Basic list and adds falling objects; weight of snow, ice, or sleet; water damage from plumbing; and building collapse. The Special form (CP 10 30) flips entirely to open-peril. For homeowners, the HO-2 list of 16 named perils is frequently quizzed. A common trap: theft and glass breakage are NOT in the commercial Basic form.

Excluded and Limited Perils

Even open-peril forms carry standard exclusions: flood, earth movement (earthquake), war, nuclear hazard, ordinance or law, intentional acts, wear and tear, and government seizure. Two of these — flood and earthquake — are the exam's favorite "buy-back" items: excluded under standard homeowners and commercial property forms, they require separate policies or endorsements (an NFIP flood policy; an earthquake endorsement or DIC; commercial CP 10 40).

Anti-concurrent causation language matters. If an excluded peril (flood) and a covered peril (wind) combine to produce a single loss, anti-concurrent wording can bar the entire loss even though wind alone would be covered. This clause drove heavy hurricane litigation and is a favorite advanced-question topic. Watch also for ensuing-loss carve-backs, which restore coverage for a covered peril that follows an excluded one.

Coverage Triggers and Direct vs. Indirect Loss

Property forms distinguish direct loss (physical damage to the property itself) from indirect/consequential loss (the financial follow-on, such as lost business income or extra expense). Business income coverage (CP 00 30) is triggered only by direct physical loss from a covered peril that causes a necessary suspension of operations during the period of restoration. No covered direct loss means no business-income payout — consequential coverages "ride on" a covered direct loss.

Direct vs. Indirect (Consequential) Loss

A direct loss is the immediate physical damage from a peril (fire burns the building). An indirect/consequential loss is the financial fallout that follows (lost business income while the building is repaired, spoilage when refrigeration fails). Property forms cover direct loss by default; indirect loss needs business income / extra expense or spoilage coverage. The exam separates the fire damage (direct) from the lost rent or profits (indirect).

Concurrent Causation and the ACC Clause

When a covered and an excluded peril combine to cause one loss, the anti-concurrent-causation (ACC) lead-in — "we will not pay regardless of any other cause or event contributing concurrently or in any sequence" — lets the insurer deny the entire loss if an excluded peril (flood, earth movement) is in the chain. This is why flood-plus-wind hurricane claims are heavily litigated and why the ACC wording is a frequent exclusion question.

Proximate Cause and the Chain of Events

Coverage often turns on proximate cause — the dominant, efficient cause that sets the loss in motion. If a covered peril starts an unbroken chain ending in damage, the loss is covered even if an excluded peril appears later; if an excluded peril is the proximate cause, the loss is denied. The anti-concurrent-causation clause overrides this by denying when an excluded peril contributes "in any sequence." Distinguishing proximate-cause analysis from ACC wording is an advanced but tested point.

Burden of Proof by Form

The burden shift is the practical reason open-peril coverage costs more, and "who bears the burden" is a recurring causes-of-loss question.