The 80% Coinsurance Trap on a Cold-Storage Fire
Ridgeline Foods insured its cold-storage warehouse under a commercial property form with a $900,000 building limit, an 80% coinsurance clause, a $25,000 deductible, and no agreed-value option. At the time of loss the replacement cost is $1.5 million, a figure the insured's broker questioned at the last renewal but never documented. A failed condenser line floods the ground floor, causing $420,000 of building damage and shutting the plant for 11 days. The business income limit is $600,000 with a 72-hour waiting period; the accountant documents lost net profit of $6,500 per day and continuing expenses of $1,200 per day during the shutdown. The insured argues that because the loss is well below the policy limit, coinsurance should not apply, and asks the adjuster to treat the claim as if the limit were payable. Spoiled inventory is insured under a separate stock throughput policy. The adjuster must issue a position letter within 10 days.
1. Calculate the building indemnity payable and explain why the insured's argument about the policy limit fails.
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Step 1, required insurance: 0.80 x $1,500,000 = $1,200,000. Step 2, ratio: $900,000 / $1,200,000 = 0.75. Step 3, apply to the loss: 0.75 x $420,000 = $315,000. Step 4, subtract the deductible: $315,000 - $25,000 = $290,000 payable, which is below the $900,000 limit, so the limit does not cap it.
The insured's premise is wrong. Coinsurance does not test whether the loss exceeds the limit; it tests whether the limit purchased equals the stated percentage of value. Buying 75% of the required amount means retaining 25% of every loss, whether the loss is $4,000 or $400,000. The ratio exists so that underinsured risks do not pay the same rate as fully insured ones. The limit is only an upper bound: had the adjusted loss been $1.4 million, the insurer would pay the $900,000 limit, because the penalty can never exceed the limit. If Ridgeline wants to escape the arithmetic at the next renewal, the fix is an agreed-value option, not an argument about loss size.
2. Compute the business income payment and identify two coverage questions the waiting period and the 11-day shutdown raise.
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Period of indemnity: the 72-hour waiting period removes the first three days, so 11 - 3 = 8 compensable days. Business income equals net profit plus continuing operating expenses: ($6,500 + $1,200) x 8 = $61,600, comfortably inside the $600,000 limit.
Two questions must be settled before the figure is final. First, when does the period of restoration end? It ends when the property should have been repaired with reasonable speed and diligence, not when it actually was, so a slow contractor does not extend coverage. Second, are the expenses genuinely continuing? Payroll for staff who were redeployed, or taxes and utilities that stopped, are not payable. Confirm also whether the business income form carries its own coinsurance or a 12-month limitation, since a separate ratio would change the payment. Finally, check for duplication: the stock throughput policy pays for the spoiled goods, but the profit lost because those goods could not be sold belongs in this claim.
3. The broker demands that the insurer honor the limit because it knew the valuation was disputed. Advise the adjuster on responding and on documentation.
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Tell the broker in writing that the policy responds as written. Coinsurance is a contract term, not a discretionary penalty, and the insurer waived nothing. The broker questioned the valuation at renewal but never submitted corrected values, requested an agreed-value endorsement, or received any written statement that the limit would be treated as adequate. Waiver requires voluntary relinquishment of a known right, and estoppel requires a misrepresentation on which the insured reasonably relied; neither is present, and the broker is the insured's agent, not the carrier's.
Practically, the adjuster should: issue a reservation-of-rights letter that shows the calculation step by step rather than only a net figure; send the insured the valuation worksheet with a plain explanation; pull the renewal file so the record shows the insurer searched for evidence of reliance; pay the undisputed amount promptly; and flag the broker's handling as an errors-and-omissions exposure without accusing anyone. Offer an agreed-value review at renewal. Speed and transparency here are the best defense against a market-conduct complaint.