Introduction to the Special Form

For anyone preparing for the Catastrophe Adjuster Exam, the HO-3 (Special Form) is the most critical document to master. It is the industry standard for homeowners insurance and serves as the baseline for the majority of residential claims filed after a major weather event. Understanding how this policy functions is not just about passing the test; it is about accurately determining coverage during high-pressure deployments.

The HO-3 is unique because it is a "hybrid" policy. It combines Open Perils coverage for the dwelling and other structures with Named Perils coverage for personal property. As an adjuster, your first step in any claim is identifying whether the cause of loss is covered under the specific section of the policy applicable to the damaged item.

For a broader look at the licensing process, refer to our complete CAT Adjuster exam guide.

Standard Coverage Limits

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100% (Limit of Liability)
Coverage A: Dwelling
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10% of Coverage A
Coverage B: Other Structures
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50% of Coverage A
Coverage C: Personal Property
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30% of Coverage A
Coverage D: Loss of Use

Section I: Property Coverages Breakdown

The HO-3 is divided into several coverage sections. For property claims, adjusters focus on Coverage A through D:

  • Coverage A (Dwelling): Covers the primary residence and structures attached to it (like an attached garage). In catastrophe adjusting, this is where the bulk of wind and hail damage claims are categorized.
  • Coverage B (Other Structures): Covers structures separated from the dwelling by clear space, such as detached garages, fences, and sheds. The standard limit is 10% of Coverage A, though this can be increased by endorsement.
  • Coverage C (Personal Property): This covers the insured's belongings. Unlike the dwelling, personal property is covered on a Named Perils basis. This means the loss must be caused by one of the 16 specific perils listed in the policy (e.g., Fire, Windstorm, Theft, Falling Objects).
  • Coverage D (Loss of Use): Also known as Additional Living Expenses (ALE). If a catastrophe makes the home uninhabitable, this coverage pays for the increase in living expenses (hotels, meals) so the insured can maintain their normal standard of living.

To test your knowledge on these specific limits and how they apply to real-world scenarios, you can use our practice CAT Adjuster questions.

Open Perils vs. Named Perils in HO-3

FeatureCoverage A & B (Real Property)Coverage C (Personal Property)
Peril TypeOpen Perils (All-Risk)Named Perils (Broad Form)
Burden of ProofOn the Insurer (to prove exclusion)On the Insured (to prove peril)
Default ValuationReplacement Cost Value (RCV)Actual Cash Value (ACV)

Valuation: RCV vs. ACV

One of the most common points of confusion on the exam involves how losses are settled. Under a standard HO-3 policy:

Replacement Cost Value (RCV) applies to Coverage A and B, provided the insured maintains insurance to value (usually 80% of the replacement cost). RCV pays the cost to repair or replace the damaged property with materials of like kind and quality, without deduction for depreciation.

Actual Cash Value (ACV) typically applies to Coverage C (Personal Property) unless a "Personal Property Replacement Cost" endorsement is added. ACV is calculated as Replacement Cost minus Depreciation. As a CAT adjuster, you must be proficient in calculating depreciation based on the age and condition of the items at the time of loss.

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The Big Exclusions

Even though Coverage A is "Open Perils," certain causes of loss are universally excluded in the HO-3 form. These include Flood, Earth Movement (Earthquake), Neglect, War, and Nuclear Hazard. If you are adjusting a claim following a hurricane, you must carefully distinguish between damage caused by wind (covered) and damage caused by rising water/surge (excluded under HO-3).

Frequently Asked Questions

Yes. Falling objects is a covered peril. If the tree hits the dwelling (Coverage A), it is covered under Open Perils. If it hits a fence (Coverage B), it is also covered. The policy also typically provides a limited amount (usually $500-$1,000) for tree debris removal if the tree damages a covered structure.

While the HO-3 covers personal property (Coverage C) on a Named Perils basis, the HO-5 (Comprehensive Form) covers personal property on an Open Perils basis. The HO-5 is broader and generally more expensive.

Generally, mold is excluded unless it results from a covered peril (like water damage from a pipe burst). Even then, many policies have a specific sub-limit (e.g., $10,000) for mold remediation and testing.

If the limit of insurance is less than 80% of the full replacement cost, the insurer will pay either the ACV of the loss or a proportion of the cost to repair (the ratio of the limit carried to the limit required), whichever is greater.