Coinsurance Math After a Sawmill Fire
Clearwater Mill Co. insures its sawmill building under a commercial property policy with replacement cost coverage, an 80% coinsurance clause, a $1,200,000 building limit, and a $10,000 deductible. The policy has no agreed value and no blanket limit. At the time of a fire, an independent appraisal puts the building's replacement cost at $1,800,000. The fire damages the east wing. The insurer's estimator calculates $400,000 replacement cost and $280,000 actual cash value for the damaged building portions. The insured has not repaired and wants a replacement-cost settlement. The adjuster notes that the insured purchased $1,200,000 because a former agent told the owner 'that should be plenty.' The insured argues the coinsurance clause should not apply because the agent was told the building was 12,000 square feet and the agent never inspected. The policy is clear, and the insured is a sophisticated commercial buyer with prior property claims.
1. Does coinsurance apply? Calculate the required insurance and the coinsurance percentage.
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Coinsurance applies because the policy has an 80% coinsurance clause, no agreed value, and no blanket limit. The required amount of insurance is 80% of the building's replacement cost at the time of loss: 0.80 × $1,800,000 = $1,440,000. The insured carried $1,200,000. The coinsurance ratio is insurance carried divided by insurance required: $1,200,000 ÷ $1,440,000 = 0.8333, or 83.33%. Because the insured carried less than the required amount, the insurer will not pay the full loss even though the loss is below the policy limit. The agent's statement does not waive the clause. If the agent was negligent, the insured may have an errors-and-omissions claim against the agent, but that is separate from the policy calculation. The adjuster should apply the written coinsurance condition and document the appraisal, the limit, and the formula used.
2. Calculate the maximum payable on a replacement-cost basis and on an actual cash value basis, showing each step.
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Replacement-cost basis: apply the coinsurance ratio to the replacement-cost loss: 0.8333 × $400,000 = $333,333. Subtract the $10,000 deductible: $333,333 − $10,000 = $323,333. That amount is below the $1,200,000 limit, so the maximum payable is $323,333, subject to the policy's replacement-cost conditions. Actual cash value basis: apply the same ratio to the actual cash value loss: 0.8333 × $280,000 = $233,333. Subtract the $10,000 deductible: $233,333 − $10,000 = $223,333. If the insurer pays actual cash value first and holds back depreciation, the holdback is the difference between the replacement-cost payment and the actual cash value payment, calculated consistently with the coinsurance penalty and policy conditions. The adjuster should not apply the deductible twice. The insured's failure to repair affects when replacement cost is payable, not whether coinsurance applies.
3. How should the adjuster respond to the insured's agent-error argument, and what should be documented?
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The adjuster should acknowledge the argument without accepting that it changes the policy. The coinsurance clause is a written condition; an agent's oral assurance does not amend the policy unless the insurer issued an endorsement or is otherwise bound by a legal theory such as estoppel. The adjuster should explain the calculation in writing, show the required insurance amount, and identify the appraisal and policy language relied on. If the insured says the agent knew the square footage and failed to inspect, the adjuster should document the statement and refer the matter to the insurer's errors-and-omissions or agency review process. The adjuster should not tell the insured the agent 'caused' the problem or promise that the insurer will cover the gap. The file should include the appraisal, the policy declarations, the coinsurance endorsement, the estimator's replacement-cost and actual cash value figures, the deductible, and all communications about the agent. If the amount of loss is disputed, the appraisal provision may resolve it, but appraisal does not rewrite the coinsurance percentage.