1.4 Policy Structure: Declarations, Insuring Agreement, Conditions, Exclusions

Policy Structure and Components

Nearly every ISO property and casualty policy is assembled from the same building blocks. Knowing where each piece of information lives lets you answer "which part of the policy contains X?" questions instantly. The standard parts are Declarations, Definitions, Insuring Agreement, Conditions, and Exclusions (mnemonic DICE/D).

The Standard Policy Parts

ISO Forms and Editions

The exam references ISO standardized forms by name and edition year. Common examples:

• Homeowners: HO 00 03 (special form, the most common), HO 00 04 (renters/contents), HO 00 06 (condo unit-owners), HO 00 05 (comprehensive open-perils).
• Dwelling: DP-1 (basic, named perils, often ACV), DP-2 (broad), DP-3 (special, open perils on the dwelling).
• Commercial liability: ISO CG 00 01 Commercial General Liability (occurrence) and CG 00 02 (claims-made).
• Personal Auto: ISO PP 00 01 Personal Auto Policy.

Editions matter: the current CGL edition introduced limits like a separate aggregate; cite the form name if unsure of the year.

Coverage Triggers: Occurrence vs. Claims-Made

A coverage trigger determines which policy responds.

• Occurrence trigger (CG 00 01): covers injury/damage that happens during the policy period, regardless of when the claim is filed — even years later.
• Claims-made trigger (CG 00 02): covers claims first made during the policy period, provided the injury occurred on or after the retroactive date. An optional Extended Reporting Period (tail) covers late-reported claims after expiration.

Trap: under claims-made, a loss before the retroactive date is excluded even if the claim arrives during the policy period.

Limits and How They Apply

• Per-occurrence limit — the most paid for any single occurrence.
• Aggregate limit — the most paid during the entire policy period across all occurrences.
• Split limits (auto liability) — e.g., 100/300/50 = $100,000 per person bodily injury / $300,000 per accident BI / $50,000 property damage.
• Combined Single Limit (CSL) — one limit covers BI and PD combined per accident.

Worked split-limit example: under 100/300/50, an at-fault accident injuring three people $150,000 each pays a maximum of $100,000 per person, capped at $300,000 for the accident — so the insured owes the remaining $150,000 personally.

The Coinsurance Clause (a Condition)

The coinsurance clause penalizes underinsurance. The payment formula is:

Payment = (Insurance Carried / Insurance Required) x Loss - Deductible, capped at the policy limit.

Worked example: A $500,000 building has an 80% coinsurance clause, so required insurance = $400,000. The owner carries only $300,000 and suffers a $100,000 loss (no deductible).

• Ratio = $300,000 / $400,000 = 0.75
• Payment = 0.75 x $100,000 = $75,000

The insured absorbs the $25,000 coinsurance penalty for being underinsured.

Endorsements, Riders, and How They Modify the Form

A base ISO form is rarely sufficient by itself. Endorsements (the property/casualty term; "riders" in life and health) are attached documents that add, delete, or change policy terms — increasing a limit, adding an insured, scheduling jewelry, or removing an exclusion. When an endorsement conflicts with the base form, the endorsement controls because it is the more specific and more recent expression of the parties' agreement.

On the exam, "Which document changes the terms of an issued policy?" is the endorsement, and "Where do you find the forms attached to the policy?" is the Declarations page.

Reading a Coverage Question Methodically

Exam scenarios reward a disciplined reading order that mirrors the policy structure. Confirm (1) the insuring agreement actually promises the kind of loss at issue, (2) the loss is not removed by an exclusion, (3) any applicable condition (notice, proof of loss, coinsurance) is satisfied, and (4) the limit is sufficient. A loss can be within the insuring agreement yet still denied because an exclusion applies or a condition was breached.

A worked illustration: a homeowner's special-form policy covers "all risk" to the dwelling. A pipe bursts (covered cause), but the policy excludes loss from continuous seepage over weeks and requires prompt notice. If the insured ignored a slow leak for two months and reported it late, the insurer can deny under the exclusion and the notice condition even though sudden water damage would normally be covered. Always trace the loss through all four parts rather than stopping at the insuring agreement.