What does coinsurance mean on a commercial building quote?

Coinsurance in commercial property insurance is a condition about how much insurance you carry compared with the property's value under the policy. If the required amount is not carried, a covered partial loss can be reduced even when the damage is less than the building limit. It is not the same thing as the deductible.

Before choosing a cheaper proposal with a lower building limit, ask how that limit works with the coinsurance wording. Burch Insurance Group can review the proposal and available alternatives with you, using current building information rather than assuming the lowest limit is the best way to reduce premium.

The percentage is not simply your share of every claim

An 80% coinsurance condition does not, by itself, mean the owner always pays 20% of a covered claim. It generally establishes a minimum insurance amount by applying the stated percentage to the property's value as defined by the contract.

If the amount carried falls below that requirement, the relationship between the two amounts can reduce recovery. The actual valuation basis, calculation and any exceptions must be read in the policy.

A partial-loss example

Consider a fictional building valued at $4 million on the basis used by its policy. An 80% coinsurance requirement would call for at least $3.2 million of insurance. Suppose the owner instead carries $2.4 million, and a covered loss causes $400,000 of damage.

In a simplified proportional calculation, $2.4 million divided by $3.2 million is 75%. Applying that factor to $400,000 gives $300,000 before the deductible and other applicable terms. The building did not have to suffer a total loss for the deficiency to matter.

This is an illustration, not a coverage determination. It assumes the stated values and a policy using that calculation. It does not establish the right value or limit for your building, or promise what a particular insurer will pay.

Replacement cost and coinsurance answer different questions

Replacement cost describes a method of valuing covered property damage, subject to the policy's conditions. Coinsurance concerns whether the required amount of insurance has been carried. A proposal can include replacement-cost wording and still contain a coinsurance condition.

Keep the purchase price, rebuilding estimate and insurance limit separate. Land value and a negotiated sale price do not automatically describe the cost of reconstructing the insured building. Recent additions or improvements also need to be reflected in the facts used for the review.

Our building-values worksheet helps organize those records before you choose a proposal.

What does agreed value change?

An applicable agreed-value or agreed-amount provision can suspend the coinsurance condition for the property and period specified. Confirm that the option is actually included, what values and conditions apply, and when it expires. Do not assume last year's arrangement automatically carries into the renewal.

Agreed value does not erase exclusions, deductibles or other limits. Nor should the label be read as an unconditional promise to pay the entire policy limit after any loss. Ask the agent to explain the provision alongside the rest of the quote.

Bring the quote, not just the premium

Send BIG the current policy, the renewal or competing proposal, the property address and any valuation information you have. Note additions, renovations, occupancy changes and building-system updates. You do not need to calculate the answer yourself before contacting us.

We can compare the proposed limit, valuation basis, coinsurance or agreed-value terms, deductibles and other important conditions. Our broad market access helps us explore available approaches; it does not guarantee that every property qualifies for a particular provision or a lower price.

For apartment owners, our renewal comparison guide puts these terms alongside roof and rental-income coverage.

Request a commercial property insurance review, or call 612-712-6407. We will help you understand what the proposal asks you to insure before you make the renewal decision.