Key Takeaways

  • Named perils coverage only protects against perils specifically listed in the policy — the insured must prove the loss was caused by a named peril
  • Open perils (all-risk) coverage protects against ALL causes of loss EXCEPT those specifically excluded — the insurer must prove an exclusion applies
  • Standard exclusions include flood, earthquake, war, nuclear hazard, intentional loss, wear and tear, and neglect
  • Flood coverage is NOT available from private insurers — must purchase through the National Flood Insurance Program (NFIP)
  • Earthquake coverage requires a separate endorsement or policy and typically includes a percentage deductible (often 10-20% of dwelling value)
Last updated: December 2025

Perils, Hazards, and Exclusions

The causes of loss covered by a property policy are called perils. Understanding which perils are covered — and which are excluded — is essential for interpreting coverage.

Named Perils vs. Open Perils

This is one of the most important distinctions in property insurance:

Named Perils (Basic or Broad Form)

Definition: Only covers the specific perils listed in the policy.

Common Named Perils:

  • Fire and lightning
  • Windstorm and hail
  • Explosion
  • Smoke
  • Vandalism and malicious mischief
  • Theft
  • Falling objects
  • Weight of ice, snow, sleet
  • Water damage (from plumbing, not flood)
  • Volcanic eruption

Burden of Proof: The INSURED must prove the loss was caused by a named peril.

Open Perils (Special Form / All-Risk)

Definition: Covers ALL causes of loss EXCEPT those specifically excluded.

How It Works:

  • If a peril isn't excluded, it's covered
  • Provides broader protection than named perils
  • Costs more than named perils coverage

Burden of Proof: The INSURER must prove an exclusion applies to deny a claim.


Comparison: Named vs. Open Perils

FeatureNamed PerilsOpen Perils
What's coveredOnly listed perilsEverything except exclusions
Burden of proofOn insured to prove perilOn insurer to prove exclusion
Premium costLowerHigher
Protection levelNarrowerBroader
Also calledBasic/Broad FormSpecial Form, All-Risk

Example Scenario

A meteor crashes through your roof:

  • Named Perils Policy: You must prove "meteor" is a listed peril. If not listed, NOT covered.
  • Open Perils Policy: Covered, unless "meteor" or "falling objects from space" is specifically excluded.

Standard Policy Exclusions

These perils are typically excluded from ALL property policies:

Catastrophic/Fundamental Exclusions

ExclusionReasonAlternative Coverage
FloodCatastrophic, correlated riskNFIP (National Flood Insurance Program)
EarthquakeCatastrophic, regional riskEarthquake endorsement or separate policy
WarUninsurable fundamental riskNone available
Nuclear hazardCatastrophic, uninsurableGovernment programs

Moral/Behavioral Exclusions

ExclusionReason
Intentional lossPrevents moral hazard/fraud
Illegal actsCannot profit from crime
NeglectInsured must protect property

Maintenance/Wear Exclusions

ExclusionReason
Wear and tearNormal deterioration, not sudden loss
Rust/corrosionGradual damage, not insurable
Vermin/insectsMaintenance issue
Settling/crackingNormal building movement
Mechanical breakdownEquipment warranty issue

The Flood Exclusion

Exam Alert: Flood is NEVER covered by standard property policies. This is heavily tested.

Why Flood Is Excluded:

  • Floods affect many properties simultaneously (correlated risk)
  • Adverse selection — only people in flood zones buy coverage
  • Violates "non-catastrophic" requirement for insurable risk

How to Get Flood Coverage:

  • National Flood Insurance Program (NFIP) — federal program
  • Some private flood insurance now available (limited)
  • Maximum NFIP coverage: $250,000 dwelling, $100,000 contents

The Earthquake Exclusion

Why Earthquake Is Excluded:

  • Regional catastrophic risk
  • Can affect thousands of policies at once
  • Difficult to price accurately

How to Get Earthquake Coverage:

  • Earthquake endorsement to homeowners policy
  • Separate earthquake policy
  • California Earthquake Authority (CEA) for CA residents

Important: Earthquake deductibles are typically percentage deductibles (10-20% of dwelling coverage), NOT flat dollar amounts.


Concurrent Causation

What If Multiple Perils Cause a Loss?

Concurrent Causation Doctrine: If a covered peril and excluded peril combine to cause a loss, some courts ruled the loss was covered.

Insurance Industry Response: Most policies now include anti-concurrent causation clauses stating that if an excluded peril contributes to the loss in ANY way, the entire loss is excluded.

Example:

  • Hurricane causes wind damage (covered) AND flood damage (excluded)
  • Anti-concurrent causation: BOTH losses may be excluded if they occurred together
  • Standard approach: Only wind damage is covered, flood damage excluded

Key Point: Always separate and document different types of damage for proper claim handling.

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Named Perils vs. Open Perils Coverage
Major Catastrophe Losses by Peril Type (% of total)
Test Your Knowledge

Under a named perils policy, who has the burden of proof regarding the cause of loss?

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B
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D
Test Your Knowledge

A homeowner's property is damaged by floodwaters after a hurricane. Their standard HO-3 homeowners policy will:

A
B
C
D
Test Your Knowledge

A homeowner adds earthquake coverage to their policy. They likely have a:

A
B
C
D