Why Did the Claim on My Building Not Pay Near What I Should Have Received?

What coinsurance means in commercial property insurance

Coinsurance is a clause commonly found in commercial property policies. It requires property to be insured to a stated percentage of its value, often 80%, 90%, or 100% depending on the policy.

If the insured value on the policy falls below that requirement at the time of loss, the claim payment can be reduced. This reduction is commonly called a coinsurance penalty.

For business owners, the key issue is not just whether a loss is covered. It is also whether the property limits on the policy are high enough to satisfy the coinsurance requirement.

A simple coinsurance penalty illustration

Here is a basic example using a building claim:

• Building replacement value: $1,000,000
• Coinsurance requirement: 80%
• Minimum amount that should be carried: $800,000
• Limit actually carried: $600,000
• Amount of covered loss: $200,000
• Deductible: $5,000

A common coinsurance formula is:

(Amount carried / Amount required) × Loss = Amount payable before deductible

Using the numbers above:

($600,000 / $800,000) × $200,000 = $150,000

Then subtract the deductible:

$150,000 - $5,000 = $145,000

In this example, even though the loss was $200,000, the policy would pay $145,000 after the coinsurance calculation and deductible. The business would absorb the remaining amount.

Why this catches business owners off guard

Many property losses are partial losses, not total losses. Because of that, some owners assume that carrying a lower limit will still be enough if the entire building is not destroyed.

That is where coinsurance can create an unexpected problem. A policy may respond to the claim, but not for the full amount of the covered loss, because the property was not insured to the required percentage of value.

This issue often comes up when:

• Construction costs have increased
• Improvements were made to the property
• Equipment values changed over time
• Business personal property limits were not updated
• The original statement of values is outdated

Coinsurance can apply beyond the building

Coinsurance does not apply only to the building itself. Depending on the policy, it may also apply to:

• Business personal property
• Inventory
• Tenant improvements and betterments
• Certain time-element coverages

The exact wording depends on the carrier form and endorsements. That is one reason it helps to understand how values were developed and how the policy applies those values at the time of loss.

Replacement cost and accurate values matter

A coinsurance issue usually starts with valuation. If the replacement cost estimate for a building or the current value of business personal property is too low, the limit selected may also be too low.

That does not always become obvious until a claim happens.

Business owners should keep in mind that market value, tax appraisal, loan amount, and replacement cost are not the same thing. Commercial property insurance often relies on replacement cost concepts, subject to the policy terms.

Practical questions to discuss at renewal time

A coinsurance penalty illustration is useful because it shows how a shortfall in insured values can affect claim payments. When reviewing commercial property coverage, it can help to ask:

• How was the current property value developed?
• Does the policy include an 80%, 90%, or 100% coinsurance requirement?
• Have building costs changed since the policy was written?
• Have renovations, additions, or equipment purchases changed the values?
• Are separate locations and categories of property listed correctly?

These questions can support a more informed coverage strategy and help reduce surprises after a loss.

Final thought

Coinsurance is one of those policy provisions that may seem technical until a claim brings it into focus. A business can have property insurance in place and still face a reduced payout if values are understated relative to the coinsurance requirement.

Understanding the formula is a good first step. Keeping property values current is just as important. With commercial property coverage, details in valuation and policy structure can make a meaningful difference when a claim is submitted.