The Coinsurance Penalty Nobody Ran
Gulf Coast Fabricators insures its only building under a commercial property form with replacement cost on the building, a 90% coinsurance clause, a $1,500,000 building limit, and a $10,000 deductible. An appraisal completed eight months before the fire put replacement cost at $2,400,000; the insured never updated the limit after a 2021 addition. A fire in the paint booth causes $900,000 of covered physical damage on a replacement cost basis. The insured has not decided whether to rebuild; its ground lease requires a decision within 18 months, and current construction quotes run 14 months out. Separately, the plant is shut for 11 months. Normal monthly net income is $40,000 and continuing normal operating expenses are $15,000. Four of those months reflect the insured's own delay in approving a contractor.
1. Compute the building payment and explain what the insured would have collected with a properly sized limit.
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Step 1 - Required limit: 90% × $2,400,000 = $2,160,000
Step 2 - Did/required ratio: $1,500,000 ÷ $2,160,000 = 0.6944
Step 3 - Apply the penalty to the loss: $900,000 × 0.6944 = $625,000 (rounded)
Step 4 - Deductible: $625,000 − $10,000 = $615,000
Comparison: Had the limit been $2,160,000, the loss of $900,000 would have been paid in full less the deductible, i.e. $890,000. The underinsurance costs the insured $275,000 on this one fire - far more than the premium saved.
Judgment notes:
- Coinsurance is a condition of recovery, not a separate coverage; it is applied before the deductible.
- It applies separately to each coverage part and to each item, so a blanket limit that happens to be adequate in total may still fail if reported values are misallocated.
- Consider whether the form offered an agreed value option; if the insured had bought it, no coinsurance penalty applies. Also check whether the 2021 addition triggered a reporting or value-update obligation that the producer should have flagged (E&O exposure).
2. The insured asks to be paid the full replacement cost now. What must you confirm, and what is the risk in reserving?
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Reasoning:
- Replacement cost coverage on a building is almost always conditional: the insured must actually repair or replace the damaged property, and commonly must do so within a stated period after the loss (180 days is typical, sometimes 2 years by endorsement or statute). Until then the insurer owes only actual cash value.
- So the file splits into two numbers: an ACV payment now (replacement cost less depreciation on the damaged components) and a withheld recoverable depreciation held as a reserve, releasable on evidence of completed replacement.
- The insured's 18-month lease deadline and 14-month construction timeline matter: they suggest the replacement condition is achievable, but the insured has not committed. Do not release depreciation on an unbuilt building.
- Reserve risk: if the claim is reserved at full replacement cost and the insured never rebuilds, the reserve must be reduced later, distorting loss ratios; if reserved at ACV and the insured does rebuild, the release is a surprise hit. Document the assumption.
Conclusion: Pay ACV now, hold depreciation as a separately identified reserve, and issue a written condition notice explaining the deadline and the documentation required (contract, invoices, proof of payment) to collect the withheld amount.
3. How much business income is payable for the 11-month shutdown, and does the insured's four-month delay matter?
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Monthly business income exposure:
- Net income $40,000 + continuing operating expenses $15,000 = $55,000 per month
Period of restoration: Business income is paid for the period of restoration - the time it should reasonably take, with ordinary diligence, to repair or replace the damaged property. It ends when the property could have been restored, not when the insured finally reopens.
- The four months attributable to the insured's own delay in approving a contractor are not payable. The insured cannot extend the period of restoration by inaction.
- The remaining seven months were unavoidable and are payable.
Calculation: 7 × $55,000 = $385,000
Also check: whether the form includes extended business income (commonly 30 days after operations resume) and whether any civil authority, extra expense, or ordinary payroll limitation applies. If the policy has a 12-month "period of indemnity" limitation, the 11-month shutdown fits within it, but the insured should be warned that a longer outage would not be.
Conclusion: $385,000, with the four insured-caused months excluded and the 30-day extension reviewed separately.