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

Peril vs. Hazard

Every property question begins by separating two ideas the exam constantly blurs. A peril is the actual cause of a loss — fire, windstorm, theft, lightning. A hazard is a condition that increases the likelihood or severity of a peril striking. They are not the same word for the same thing, and the test rewards candidates who keep them distinct.

Keep the two moral/morale items apart: moral = intent to defraud; morale = indifference. A single letter changes the answer.

The practical reason this matters: underwriters price and accept risk based on hazards, not perils. An applicant cannot remove the peril of fire, but a sprinkler system reduces the physical hazard, lowering the premium. A history of suspicious prior claims signals moral hazard and may lead to declination.

The exam tests whether you can read a fact pattern and label the condition correctly — a frayed extension cord is a physical hazard, an arsonist owner is a moral hazard, and a homeowner who stops locking the door because 'insurance will pay' is a morale hazard.

The Three ISO Cause-of-Loss Forms

Commercial property uses three Causes of Loss forms attached to the Building and Personal Property Coverage Form (CP 00 10). The same Basic/Broad/Special ladder appears, almost word for word, behind every homeowners form.

Basic Form — CP 10 10

A short named-peril list of roughly eleven causes: fire, lightning, explosion, windstorm or hail, smoke, aircraft or vehicles, riot or civil commotion, vandalism, sprinkler leakage, sinkhole collapse, and volcanic action. If a cause is not on the list, there is no coverage.

Broad Form — CP 10 20

Basic perils plus a second tier: falling objects; weight of snow, ice, or sleet; water damage from accidental discharge of plumbing/appliances; and collapse from specified causes. Still named-peril.

Special Form — CP 10 30

Open-perils (formerly 'all-risk'). Covers any direct physical loss unless the form excludes it. This is the broadest and most expensive option.

The Burden-of-Proof Shift (Heavily Tested)

The single most exam-relevant difference between named-peril and open-peril is who must prove what at claim time.

Under a named-peril form, the insured must affirmatively show the loss came from a listed cause. Under an open-peril form, the loss is presumed covered, and the insurer must prove an exclusion applies to deny it.

Scenario: A meteorite punches through a warehouse roof. Under Basic Form the adjuster looks for 'falling objects' — it is not listed, so there is no coverage. Under Special Form the loss is covered unless the insurer can point to an exclusion, and meteorites are not excluded. Same event, opposite outcome, driven entirely by the form.

The Named-Peril Lists You Should Recognize

When a question lists a peril and asks whether it is covered under a Broad form, you need to recognize the second-tier perils that separate Broad from Basic. The HO-2 / Broad commercial list adds these to the Basic perils:

• Falling objects (covers interior only if the exterior is first breached)
• Weight of ice, snow, or sleet
• Accidental discharge or overflow of water or steam from plumbing, heating, or appliances
• Sudden tearing apart, cracking, or burning of a steam or hot-water heating system
• Freezing of plumbing (only if the insured maintained heat or drained the system)
• Sudden damage from artificially generated electrical current

Notice the conditions baked into several of these — frozen pipes are covered only if reasonable care was taken to maintain heat. Those conditional triggers are favorite distractors.

Mapping the Ladder onto Homeowners Forms

The ISO Homeowners forms apply the Basic/Broad/Special logic to the dwelling, other structures, and personal property separately. The exam loves questions that ask which part of a home is open-peril versus named-peril.

The HO-3 split is the classic trap: the structure is open-perils, but your contents are still covered only for the named perils. Upgrading contents to open-perils is exactly what HO-5 buys, or an HO-15 / HO 05 endorsement on an HO-3.

Open-Perils Still Has Exclusions

Never read 'open-perils' as 'covers everything.' Both Special Form and HO-3/HO-5 still exclude flood, earthquake, war, nuclear hazard, ordinance or law, wear and tear, mold, vermin, and intentional loss. 'All-risk' was renamed 'open-perils' by ISO precisely because consumers wrongly believed it covered every conceivable event. The renaming is itself testable: the modern term is 'open perils,' and a question that offers 'all-risk guarantees coverage for every loss' is signaling a wrong answer.