18.1 Homeowners Policy Forms & Property-Liability Coverages

Homeowners Policy Forms & Property-Liability Coverages

Quick Answer: The ISO Homeowners program bundles residential property coverage (Section I) with personal liability and medical payments coverage (Section II). The primary owner-occupant form is the HO-3 Special Form, which provides open perils coverage for the dwelling and other structures (Coverages A and B) and broad named perils coverage for personal property (Coverage C). In contrast, the HO-5 Comprehensive Form provides open perils coverage for both dwelling and personal property. Section I property losses to buildings are settled on a replacement cost basis provided the insured maintains insurance equal to at least 80% of full replacement cost; otherwise, a proportional coinsurance penalty applies. Section II provides Coverage E ($100,000 base) for legal liability with defense costs outside policy limits and Coverage F ($1,000 base) for no-fault medical payments to non-residents incurred within three years of an occurrence.

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The ISO Homeowners Policy Program Architecture

The Insurance Services Office (ISO) Homeowners program provides standardized, multi-line package policies that combine real property, personal property, and personal liability protections. Underwriting guidelines require that owner-occupant forms (HO-2, HO-3, HO-5, HO-8) be issued only to individuals who own and occupy a one- to four-family private residential dwelling used exclusively for residential purposes (with limited incidental business occupancies permitted, such as a private home office or studio).

Comparison of ISO Homeowners Policy Forms

The Open Perils Burden-of-Proof Advantage

The fundamental distinction between an open perils contract (such as Coverage A of an HO-3 or Coverages A, B, and C of an HO-5) and a named perils contract (such as an HO-2 or Coverage C of an HO-3) lies in the legal burden of proof during claims adjudication:

• Named Perils (Broad Form): The insured bears the initial evidentiary burden to prove by a preponderance of the evidence that the physical damage was directly caused by one of the specific perils explicitly enumerated in the policy contract.
• Open Perils (Special Form): The insured must merely prove that a direct physical loss occurred to covered property during the policy term. The evidentiary burden then shifts entirely to the insurer to prove that the loss was caused by an excluded peril, limitation, or condition.

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Section I: Property Coverages Breakdown

Section I of the standard ISO Homeowners policy contains four principal coverage divisions, lettered A through D. In owner-occupant forms (HO-2, HO-3, HO-5), the coverage limits for B, C, and D are set as fixed percentages of the primary Coverage A dwelling limit, though higher limits may be purchased by endorsement.

Section I Property Coverage Hierarchy (Based on Coverage A = $500,000):
├── Coverage A: Dwelling ($500,000 Base)
├── Coverage B: Other Structures (10% of Cov A = $50,000)
├── Coverage C: Personal Property (50% of Cov A = $250,000 Worldwide)
└── Coverage D: Loss of Use (30% of Cov A = $150,000)

Coverage A: Dwelling

Coverage A insures the primary residential structure situated on the "residence premises" shown on the Declarations. It encompasses:

1. The residential building itself, including foundation, roof, and load-bearing framing.
2. Structures attached directly to the dwelling (e.g., an attached garage, attached screen porch, or connected patio deck).
3. Construction materials and supplies located on or adjacent to the residence premises used to construct, alter, or repair the dwelling or other structures.
4. Wall-to-wall carpeting and built-in appliances permanently installed within the residence. Explicit Exclusions: Land, including land on which the dwelling is located, is completely excluded.

Coverage B: Other Structures

Coverage B provides coverage for detached appurtenant structures located on the residence premises that are separated from the primary dwelling by clear space, or connected solely by an unattached fence, utility line, or exterior walkway. The standard limit is 10% of Coverage A (as an additional amount of insurance in HO-2, HO-3, and HO-5).

• Covered Examples: Detached two-car garages, detached storage sheds, gazebos, inground swimming pools, boundary fences, and decorative masonry retaining walls.
• Core Exclusions: Coverage B excludes any structure rented or held for rental to any person who is not a tenant of the dwelling (unless used solely as a private garage), and any structure from which any business is conducted, or used to store business property (unless the business property is owned solely by the insured and does not include gaseous or liquid fuel other than fuel in a permanently installed vehicle tank).

Coverage C: Personal Property

Coverage C protects personal property owned or used by an insured anywhere in the world. The automatic base limit is 50% of Coverage A for owner-occupant forms. For HO-4 (Renters) and HO-6 (Condo), Coverage C is the primary coverage limit selected by the policyholder.

• Worldwide Territory: Coverage C applies worldwide. However, for personal property usually located at an insured's residence other than the primary residence premises (e.g., secondary vacation home, self-storage facility, or a child's college dormitory room), coverage is limited to 10% of Coverage C or $1,000, whichever is greater.
• Exceptions: This 10% sublimit does not apply to personal property in a newly acquired principal residence for 30 days, or to property moved because the residence is undergoing repairs or renovation.

Coverage C Special Sublimits of Liability

To mitigate moral hazard, prevent adverse selection, and restrict catastrophic accumulation of portable, high-value luxury goods without adequate premium, ISO policies impose rigid internal sublimits on specific categories of personal property. Crucially, CPCU candidates must distinguish between sublimits that apply to loss by any peril versus those that apply only to loss by theft:

Coverage D: Loss of Use

Coverage D protects the household against consequential indirect financial losses when the residence premises becomes uninhabitable due to a covered property loss. The standard limit is 30% of Coverage A under the HO-3 form.

1. Additional Living Expense (ALE): Pays any necessary increase in living expenses incurred by the named insured to maintain the family's normal standard of living (e.g., hotel bills, temporary apartment lease, restaurant dining costs exceeding normal grocery expenses, and commercial pet boarding).
2. Fair Rental Value (FRV): Pays the fair market rental value of that portion of the residence premises rented or held for rental to others, less any expenses that do not continue while the premises is uninhabitable (e.g., utilities paid by the landlord).
3. Civil Authority Prohibited Access: If a civil authority prohibits access to the residence premises as a direct result of damage to neighboring premises by an insured peril, ALE and FRV are covered for a maximum of two weeks (14 days).

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Section I: Exclusions and Concurrent Causation

ISO Homeowners policies contain statutory General Exclusions applicable to all Section I property coverages. These exclusions isolate systemic, catastrophic, or uninsurable perils:

Core Section I General Exclusions:
[Ordinance or Law]       [Earth Movement / Earthquake]  [Water Damage / Flood / Sewer Backup]
[Off-Premises Power]     [Neglect / Failure to Protect] [War & Military Action]
[Nuclear Hazard]         [Intentional Loss]             [Governmental Action / Confiscation]

Detailed Analysis of Critical Section I Exclusions

• Ordinance or Law: Excludes the increased cost of construction, repair, or demolition required to comply with the enforcement of local building codes or municipal ordinances. The standard policy provides a built-in additional coverage of 10% of Coverage A for ordinance or law compliance, but substantial additional limits must be endorsed for older structures.
• Earth Movement: Excludes earthquake, landslide, mudslide, mudflow, sinkhole collapse, and earth sinking or shifting. However, if earth movement results in fire or explosion, the ensuing loss caused by fire or explosion is covered.
• Water Damage: Excludes: (1) flood, surface water, waves, tidal water, and storm surge; (2) water or water-borne material backing up through sewers or drains or overflowing from a sump pump; and (3) water below the surface of the ground that exerts pressure on or seeps through foundations, walls, floors, or paved surfaces. Homeowners must purchase a National Flood Insurance Program (NFIP) policy for flood, and attach a Water Backup and Sump Discharge or Overflow endorsement (HO 04 95).
• Off-Premises Power Failure: Excludes loss caused by the failure of power or other utility services if the failure takes place off the residence premises. If the power failure results in a covered peril occurring on the residence premises (e.g., power surge sparks an interior fire), the ensuing fire damage is covered.
• Neglect: Excludes loss resulting directly or indirectly from the insured's failure to use all reasonable means to save and preserve property at and after the time of a loss.

The Doctrine of Concurrent Causation

The legal doctrine of concurrent causation establishes that when a loss results from a combination of two or more perils—one of which is covered and one of which is excluded—the entire loss is covered if the covered peril contributed substantially to the loss. To preserve underwriting integrity, ISO policies incorporate anti-concurrent causation (ACC) introductory language for specific catastrophic perils (Ordinance/Law, Earth Movement, Water Damage, Power Failure, War, Nuclear Hazard, Neglect, and Governmental Action):

"We do not insure for such loss regardless of: (a) the cause of the excluded event; or (b) other causes of the loss that contribute concurrently or in any sequence to the loss."

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Section I Conditions: The 80% Replacement Cost Formula

Under Section I Conditions, losses to personal property (Coverage C) are settled on an Actual Cash Value (ACV) basis (replacement cost minus physical depreciation), unless modified by the Personal Property Replacement Cost Loss Settlement endorsement (HO 04 90).

In contrast, losses to buildings under Coverages A and B are settled on a Replacement Cost basis without deduction for depreciation, subject to the 80% Replacement Cost Condition.

The 80% Coinsurance Rule Mechanics

To qualify for full replacement cost settlement on a partial building loss, the named insured must maintain a Coverage A insurance limit equal to at least 80% of the full replacement cost of the dwelling immediately prior to the loss:

Replacement Cost Settlement Decisions:
Is Coverage A Limit ≥ (80% × Current Full Replacement Cost)?
├── YES: Insurer pays the FULL Replacement Cost of the repair/rebuilding, up to the policy limit.
└── NO: Insurer pays the GREATER of:
         1. Actual Cash Value (ACV) of the damaged building component.
         2. The Proportional Coinsurance Formula Payout:
            [Insurance Carried / (80% × Full Replacement Cost)] × (Loss Amount − Deductible)

Worked Step-by-Step Calculation: Coinsurance Penalty

Loss Circumstance

• Current full replacement cost of dwelling at time of loss: $500,000
• 80% coinsurance benchmark requirement: $500,000 × 0.80 = $400,000
• Actual Coverage A limit maintained by insured (Insurance Carried): $300,000
• Direct physical loss caused by windstorm to roof and exterior framing: $80,000
• Depreciation on the damaged roof materials: $25,000
• Policy deductible: $1,000

Step 1: Evaluate Coinsurance Compliance

The insured carried $300,000, which is below the mandatory 80% benchmark ($400,000). The insured failed the condition and is subject to a coinsurance penalty.

Step 2: Calculate the Proportional Payout

The ISO homeowners loss settlement condition applies the proportion to the cost to repair or replace after application of the deductible:

• Proportional ratio = $300,000 ÷ $400,000 = 0.75
• Loss after deductible = $80,000 − $1,000 = $79,000
• Proportional payment = 0.75 × $79,000 = $59,250

Step 3: Calculate Actual Cash Value (ACV)

• ACV of the damage = $80,000 − $25,000 depreciation = $55,000
• ACV payment after the $1,000 deductible = $54,000

Step 4: Compare and Apply Policy Condition

The policy pays the greater of the proportional payment ($59,250) or ACV ($54,000), so the insurer pays $59,250. The homeowner bears $20,750 of the $80,000 loss, including the $1,000 deductible.

Order-of-operations note: The homeowners condition applies the deductible before the proportion. The commercial building and personal property coinsurance condition does the opposite: it applies the coinsurance ratio to the full loss and then subtracts the deductible.

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Section II: Liability and Medical Payments Coverages

Section II is uniform across all ISO Homeowners forms (HO-2, HO-3, HO-4, HO-5, HO-6, and HO-8). It provides third-party personal liability protection for negligent acts occurring both on and off the residence premises.

Section II Coverage Structure:
├── Coverage E: Personal Liability
│    ├── Standard Limit: $100,000 per occurrence
│    ├── Covers: Third-party Bodily Injury (BI) & Property Damage (PD)
│    ├── Legal Basis: Tort liability / Legal negligence
│    └── Defense: Insurer provides legal defense OUTSIDE and in addition to policy limits
└── Coverage F: Medical Payments to Others
     ├── Standard Limit: $1,000 per person
     ├── Covers: Necessary medical, surgical, dental, hospital, ambulance, funeral costs
     ├── Time Horizon: Incurred within 3 years of accident date
     └── Legal Basis: Strict NO-FAULT (no proof of negligence required)

Coverage E: Personal Liability Mechanics

Coverage E applies when a third-party claim is made or a lawsuit is brought against an insured for compensatory damages because of Bodily Injury (BI) or Property Damage (PD) caused by an occurrence to which the coverage applies.

• Duty to Defend: The insurer provides legal defense at its own expense by counsel of its choice, even if the allegations in the lawsuit are groundless, false, or fraudulent. Defense costs are paid as Supplementary Payments outside policy limits; they do not erode the $100,000 Coverage E aggregate per-occurrence limit. The duty to defend terminates only when the applicable limit has been exhausted by payment of a final judgment or formal settlement.

Coverage F: Medical Payments to Others Mechanics

Coverage F is designed to promote goodwill and rapidly resolve minor injuries without protracted tort litigation. It reimburses necessary medical expenses incurred within three years from the date of an accident causing bodily injury.

• No-Fault Trigger: The claimant does not have to establish that the insured was legally negligent or at fault.
• Qualifying Situations: Coverage applies to a person off or on the insured location if the bodily injury:
  1. Arises out of a condition on the insured location or the ways immediately adjoining;
  2. Is caused by the personal activities of an insured;
  3. Is caused by a residence employee in the course of employment; or
  4. Is caused by an animal owned by or in the care of an insured.
• Crucial Ineligibility: Coverage F never covers the named insured or regular residents of the household (except residence employees). It is strictly a third-party guest coverage.

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Section II Exclusions

To prevent the homeowners policy from assuming commercial, automobile, or intentional exposures, Section II enforces strict statutory exclusions:

1. Expected or Intended Injury: Excludes bodily injury or property damage expected or intended by the insured, even if the resulting injury or damage is of a different kind, quality, or degree than initially anticipated. (Exception: Reasonable force used to protect persons or property).
2. Business Pursuits & Professional Services: Excludes liability arising out of business activities conducted from the premises or rendering/failing to render professional services (legal, medical, architectural, accounting). Home business exposures require a Home Business Insurance Coverage endorsement (HO 07 01) or a commercial general liability policy.
3. Motor Vehicle Liability: Excludes liability arising out of ownership, maintenance, occupancy, operation, or loading/unloading of motor vehicles. Limited exceptions apply to: (a) vehicles in dead storage; (b) golf carts used on golfing facilities; (c) off-road recreational vehicles not owned by an insured when operated on an insured location; and (d) motorized wheelchairs.
4. Watercraft Liability: Excludes ownership, maintenance, or use of watercraft if: inboard/outdrive owned with >50 HP; outboard engines owned with >25 aggregate HP; sailing vessels ≥26 feet in length; or any watercraft used to carry passengers for compensation or rented to others.
5. Aircraft and Hovercraft: Excludes all aircraft, drones/unmanned aerial systems used for non-recreational purposes, and hovercraft.
6. Communicable Diseases, Sexual Abuse & Controlled Substances: Absolute exclusions for transmission of communicable disease, corporal punishment, physical/mental abuse, and use, sale, or manufacture of controlled substances (illicit narcotics).

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Worked Practical Scenario: Complex Multi-Line Homeowners Loss

Scenario Profile

Insured: David and Sarah Jenkins own a single-family home insured under a standard ISO HO-3 policy with the following limits:

• Coverage A (Dwelling): $400,000
• Coverage B (Other Structures): $40,000
• Coverage C (Personal Property): $200,000
• Coverage D (Loss of Use): $120,000
• Coverage E (Personal Liability): $300,000
• Coverage F (Med Pay): $5,000
• Section I Deductible: $1,000
• Endorsements: Personal Property Replacement Cost Endorsement (HO 04 90) attached. No scheduled personal property endorsement.

The Incident

A severe severe windstorm topples a large oak tree onto the detached garage, igniting a gasoline can. The ensuing fire destroys the detached garage, incinerates personal contents stored inside, and spreads to the adjacent neighbor's yard, burning the neighbor's imported greenhouse. While rushing to assist, a neighbor slips on David's wet wooden steps and fractures an ankle. The claims adjuster tallies the following damages:

1. Detached garage rebuilding cost: $48,000
2. Power tools and lawn equipment in garage (replacement cost): $12,000
3. David's custom hunting rifle collection stolen from the main house during the chaos: $6,500
4. Neighbor's burned greenhouse structural damage claim against David: $28,000
5. Neighbor's emergency room bills for broken ankle: $3,200

Claims Adjudication & Payout Analysis

• Item 1 (Detached Garage): Covered under Coverage B. The Coverage B limit is $40,000. Although rebuilding costs $48,000, the maximum recovery under Coverage B is capped at $40,000.
• Item 2 (Tools and Equipment): Covered under Coverage C. Settled at full replacement cost ($12,000) because the HO 04 90 endorsement is attached. Paid: $12,000.
• Item 3 (Hunting Rifles): Covered under Coverage C. Loss by theft of firearms is subject to the internal Section I sublimit of $2,500. Even though the replacement value is $6,500, the policy pays only $2,500.
• Deductible Application: The $1,000 property deductible applies once across the entire Section I property event, deducted from the total property settlement ($40,000 + $12,000 + $2,500 - $1,000 = $53,500 net Section I payout).
• Item 4 (Neighbor's Greenhouse): The neighbor files a negligence claim alleging David stored fuel improperly. Handled under Coverage E (Personal Liability). The insurer investigates, determines David has potential tort liability, and settles the claim for $28,000, with all legal defense expenses paid outside the $300,000 policy limit.
• Item 5 (Neighbor's Ankle Injury): Immediately covered under Coverage F (Medical Payments to Others). The injury arose from a condition on the insured premises (wet exterior steps). Paid at $3,200 on a strict no-fault basis within days, avoiding tort litigation.

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