1.2 Insurable Interest, Indemnity, and Other Insurance Principles

Insurable Interest, Indemnity, and Other Insurance Principles

Property and casualty coverage rests on a small set of legal principles that the exam tests through scenario questions. The two heaviest hitters are insurable interest and indemnity, with subrogation, contribution, and utmost good faith close behind.

Insurable interest

The insured must suffer a genuine financial loss if the covered property is damaged or the liability arises. In property insurance, insurable interest must exist at the time of loss (not necessarily at policy inception). This differs from life insurance, where interest must exist only at the inception of the contract.

Who has insurable interest in property?

• Owner — full interest
• Secured lender / mortgagee — to the extent of the loan balance
• Bailee — for property of others in their care (a dry cleaner, a parking garage)
• Tenant — in improvements and betterments they paid for

The principle of indemnity

Indemnity restores the insured to the same financial position held immediately before the loss — no better, no worse. It prevents profiting from insurance. Two key valuation methods flow from it:

• Actual Cash Value (ACV) = Replacement Cost − Depreciation
• Replacement Cost (RC) = cost to repair/replace with like kind and quality, no deduction for depreciation

Worked ACV example: a 10-year-old roof costs $20,000 to replace today; its useful life is 25 years, so it has depreciated 10/25 = 40%. ACV = $20,000 − (0.40 × $20,000) = $20,000 − $8,000 = $12,000. An ACV policy pays $12,000; a replacement-cost policy pays the full $20,000 (subject to limits and any holdback until repairs are made).

Coinsurance — the most-tested formula

Property policies use a coinsurance clause (commonly 80%, 90%, or 100%) to encourage insuring to value. If the insured carries less than the required percentage of value, the claim is penalized.

Loss payment = (Amount carried ÷ Amount required) × Loss − Deductible, capped at the policy limit.

Worked example: a building worth $500,000 with an 80% coinsurance clause requires $400,000 of coverage. The owner carries only $300,000. A $100,000 loss occurs (no deductible).

• Required: 0.80 × $500,000 = $400,000
• Recovery: ($300,000 ÷ $400,000) × $100,000 = 0.75 × $100,000 = $75,000

The insured absorbs the $25,000 shortfall as a coinsurance penalty for underinsuring.

Other Insurance and contribution

When two or more policies cover the same risk, Other Insurance provisions prevent the insured from collecting more than the loss (reinforcing indemnity). Methods include:

Pro rata example: Policy A limit $100,000, Policy B limit $300,000, total $400,000. On a $40,000 loss, A pays 100/400 × $40,000 = $10,000; B pays 300/400 × $40,000 = $30,000.

Subrogation and utmost good faith

Subrogation lets the insurer, after paying a claim, step into the insured's legal shoes to recover from the at-fault third party. It supports indemnity by preventing a double recovery and shifting cost to the wrongdoer. The insured may not waive or impair subrogation rights after a loss.

Utmost good faith (uberrimae fidei) requires both parties to deal honestly and disclose material facts. Related doctrines tested on the exam:

• Representations — statements believed true when made (must be substantially true)
• Warranties — statements guaranteed to be literally true
• Concealment — silence about a material fact
• Misrepresentation / Fraud — false statements that can void coverage

Timing of Insurable Interest

A testable nuance separates property from life insurance. In property and casualty, insurable interest must exist at the time of loss — not necessarily at policy inception. A buyer who insures a building and sells it before a fire has no insurable interest when the fire occurs, so the claim fails. In life insurance, by contrast, the interest need only exist at inception.

Multiple parties can hold simultaneous insurable interests in the same property:

Because indemnity caps recovery at the actual loss, multiple interests cannot collectively recover more than the property's value.

Subrogation, Salvage, and the Limits of Indemnity

The principle of indemnity prevents profit from a loss; several mechanisms enforce it:

• Subrogation — after paying a claim, the insurer steps into the insured's shoes to recover from the at-fault third party. The insured may not impair this right (e.g., by signing a release) after a loss.
• Salvage — the insurer takes title to damaged property it has paid for in full and resells it to offset the claim.
• Other Insurance clauses (pro rata, contribution by equal shares, primary/excess) split a loss among overlapping policies so the insured collects only once.

Stated-value and valued policies are exceptions: they pay a fixed agreed amount regardless of actual value, common for fine art and antiques where ACV is hard to prove.