Coinsurance Penalty on a Blanket Commercial Property Limit
Precision Stamping & Fabrication in Grand Rapids runs 26 employees in one building. Its commercial property program carries a blanket limit of $2,800,000 applying to building and machinery/equipment, replacement cost, 90% coinsurance, and a $5,000 deductible. Business income is written at $500,000 with a 72-hour waiting period. At the time of a paint-line fire, the insured values are confirmed at $2.4 million for the building and $1.1 million for equipment. The fire causes $900,000 of building damage and $700,000 of equipment damage. Production stops for five months; the business income loss is calculated at $520,000. The insured declined flood, spoilage and equipment breakdown coverage at the last renewal.
1. Calculate the property settlement and explain how the blanket limit and coinsurance interact.
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Step 1 - total insurable values at time of loss: $2,400,000 + $1,100,000 = $3,500,000.
Step 2 - limit required to avoid a penalty at 90%: 0.90 × $3,500,000 = $3,150,000.
Step 3 - did/should ratio: $2,800,000 ÷ $3,150,000 = 0.8889, so the insured carries about 80% of value, not 90%.
Step 4 - loss: $900,000 + $700,000 = $1,600,000.
Step 5 - payment: $1,600,000 × 0.8889 ≈ $1,422,222, less the $5,000 deductible ≈ $1,417,222. The shortfall against the $1,600,000 loss is roughly $183,000.
Key point: the blanket limit is tested against the combined values of all blanket coverages, not property by property - that flexibility is exactly why a blanket form can still penalize an insured who set the limit from a single year's appraisal. Recommend an agreed-value endorsement or an annual valuation review.
2. Address the business income claim and the declined coverages: what is paid, what is not, and what should be changed?
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Business income: the $500,000 limit is the ceiling; the $520,000 calculated loss is capped at $500,000 (less any waiting-period adjustment, which is negligible over five months). If the form applies a coinsurance condition to business income, test the limit the same way as the property limit; if it is written on an actual-loss-sustained basis, the limit alone governs. Either way the insured is underinsured by design, not by accident.
Not covered:
- Flood - excluded under every commercial property form; needs a flood policy or NFIP/write-through.
- Spoilage - optional; the paint and chemical inventory loss is uninsured.
- Equipment breakdown - the mechanical/electrical failure that may have started the fire is excluded absent the endorsement.
Recommendations: raise business income to at least a 12-month maximum-probable-loss figure, add spoilage and equipment breakdown, buy flood separately, set an agreed value for property, and schedule an annual valuation review because the stamping equipment is being replaced at rising prices.