Coinsurance Case Study — When Underinsuring Reduced the Claim Payment

This Was a Fire Claim With a Coverage Problem

This was a fire loss on a two-story building in Manhattan.

The loss itself was not the issue.

👉 the coverage was

The Situation

The building had:

• approximately $800,000 in coverage
• an 80% coinsurance requirement
• a $50,000 deductible

The total damage came in around:

👉 $625,000

On paper:

👉 this looked like it should be fully covered

What Actually Happened

The property was not insured to the required level.

It was determined that:

👉 the building was insured at roughly 70% of replacement cost

Instead of the required:

👉 80%

That triggered the coinsurance clause.

How That Affected the Claim

Because the property did not meet the required coverage threshold:

👉 the claim payment was reduced

The final approved amount:

👉 approximately $615,000

And that became the ceiling.

There was no going beyond that.

What That Means in Real Terms

Even though the loss was approximately $625,000:

👉 the claim did not pay the full amount

And after applying the deductible:

👉 the owner still had to come out of pocket

Where the Problem Started

This was not a dispute about damage.

This was not a dispute about scope.

👉 this was a coverage issue

The policy required a certain level of insurance.

That level was not maintained.

What Most People Miss

Most property owners think:

👉 “If the loss is under my policy limit, I’m covered”

That’s not how coinsurance works.

👉 it compares your coverage to what it should be

Even if:

• the loss is below your policy limit

You can still be penalized.

Why This Matters

This was not a total loss.

👉 this was a partial loss

And that’s where coinsurance actually affects payment.

Instead of being limited by the policy limit:

👉 the claim was reduced based on coverage level

What This Case Actually Shows

This is what happens when:

• coverage falls below required levels
• coinsurance is triggered
• the claim is a partial loss

The numbers don’t change because of damage.

👉 they change because of the policy

The Most Important Takeaway

👉 Being underinsured reduces what you get paid
👉 Coinsurance applies even when the loss is below your policy limit
👉 Partial losses are where coinsurance has the biggest impact
👉 The policy requirement controls the outcome

What Property Owners Should Understand

• Coverage must match rebuild cost
• Coinsurance penalties are built into the policy
• This is not negotiated — it is calculated
• If you fall below the requirement, you pay the difference

What This Still Comes Back To

Everything comes down to the estimate.

Not just the repair estimate.

👉 the rebuild estimate used to set the policy

Because if that number is off:

👉 everything that follows can be off

One Last Thing (What Everything Comes Down To)

Everything comes down to the estimate.

If your claim is delayed, underpaid, or being pushed back, that’s usually the reason.

If you’re not finding a clear answer to your situation here, go through the other case studies. Most real-world claim problems — and how they were handled — are already shown there.

And if your estimate is in good shape, the other issues tend to be straightforward to push through.

To understand why this happens and how to fix it, review the following:

Why Insurance Claims Get Delayed (It Comes Down to the Estimate): The Real Reason Claims Get Delayed
The Entire Insurance Industry Runs on One Thing That’s Rarely Explained: It’s the Estimate — And This Is Why Contractors Get It Wrong: Contractors Don’t Fail at Building — They Fail at Writing
The Entire Insurance Industry Runs on One Thing That’s Rarely Explained: It’s the Estimate — And This Is Why Adjusters Rewrite Instead of Approving: Adjusters Don’t Approve What They Can’t Follow
The Entire Insurance Industry Runs on One Thing That’s Rarely Explained: It’s the Estimate — And This Is What It Should Look Like: A Proper Estimate Is Not Just a Number

How to Read an Insurance Estimate (Room by Room): Why Most Homeowners Feel Confused by Estimates

How to Vet a Contractor, Public Adjuster, and Mitigation Company: Why This Matters More Than Anything Else

If you still have questions about your claim, visit our Homeowners Insurance Claim FAQs page for quick answers and links to detailed guides.

Learn More At ClaimHelpMe.com

This page explains the basics of how this part of the insurance claim process works.

However, inside ClaimHelpMe.com, homeowners can access real repair estimates, detailed examples, and step-by-step explanations showing how claims are documented, evaluated, and presented to insurance carriers.

The free content explains the fundamentals.
The ClaimHelpMe platform shows how the process actually works.

Explore more homeowner insurance claim guides in our Claim Guides section.

About The Author

Mark Grossman is a Licensed Public Adjuster and NASCLA Certified Contractor with 28 years in the restoration insurance industry and 35 years in construction.

Learn more → Mark Grossman