The Gap Nobody Sees Until It Matters
If your commercial property policy was written in 2022 or 2023, the replacement cost limit on that policy was based on what it would have cost to rebuild your building at the time. The problem is that construction costs have moved sharply since then. Materials remain close to 40 percent above pre-2020 levels, labor is tighter, and lead times on specialized equipment are longer. In many cases, the true cost to rebuild a commercial building today is 25 to 40 percent higher than the limit the policy was originally written for. A recent valuation study found that 88 percent of surveyed commercial sites were underinsured on their buildings.
This gap is quiet. Nothing looks wrong. Your premiums are paid, your policy is in force, and your certificate of insurance goes out to whoever asks for it. The problem does not surface until you file a claim and the payout falls short of what it actually costs to rebuild. By then, the gap is the most expensive number in the room.
Why the Coinsurance Clause Multiplies the Problem
Most commercial property policies include a coinsurance clause, and this is where underinsurance goes from bad to worse. Coinsurance requires you to insure your property to a stated percentage of its actual replacement cost, typically 80 or 90 percent. If your coverage limit falls below that threshold, the carrier can reduce your payout proportionally on any claim, not just a total loss.
Here is what that looks like in practice. Suppose your building would cost $2 million to replace today, but your policy still carries a $1.4 million limit from when it was last valued. With an 80 percent coinsurance clause, you need to carry at least $1.6 million. You are insured for $1.4 million, so you are carrying 87.5 percent of the required amount. If you file a $200,000 claim for roof damage, the carrier does not pay $200,000. They pay roughly $175,000 and you absorb the rest, even though your limit was well above the claim amount. The penalty applies because your insured value was below the required threshold, and it applies to every claim, large or small.
The Market Is Paying Attention
Carriers have started flagging accounts where coverage limits do not reflect current rebuilding costs. In some cases, they are responding with tighter terms or coverage restrictions at renewal. This is a shift worth noticing. Where carriers once renewed policies without much scrutiny of property values, they are now asking harder questions, and accounts that cannot show updated valuations are getting less favorable treatment.
The other side of that coin is encouraging. The commercial property market in 2026 has brought some stabilization. Businesses with strong risk profiles, clean loss histories, and accurate property values are seeing more favorable renewal outcomes, with some well-maintained properties achieving rate reductions approaching 15 percent. The businesses that benefit from this environment are the ones that come to renewal with current data and a documented record of maintenance and safety practices.
A Simple Fix That Prevents a Painful Surprise
Updating your property values is one of the most straightforward things you can do to protect your business. It does not require a full appraisal in every case. A review of your current replacement cost estimate against today’s construction costs, material prices, and local labor rates can tell you quickly whether your limits are still in the right range. If they are not, adjusting them now costs a modest increase in premium. Leaving them where they are costs you whenever you file a claim.
We see this problem across nearly every industry and building type. It is not a sign that anyone made a mistake. It is a sign that prices moved and the policy did not move with them. donegan can run through your current property values with you and help you understand whether your limits reflect what it would actually take to rebuild today. That conversation is worth having before a loss tells you the answer instead.
Frequently Asked Questions
How do I know if my commercial property is underinsured?
Compare your current policy’s replacement cost limit to what it would actually cost to rebuild your building today. If your limit has not been updated in more than 18 months, there is a strong chance it is below current construction costs. A broker or agent can help you run this comparison quickly.
What is a coinsurance penalty?
A coinsurance clause requires you to insure your property to a certain percentage of its replacement cost. If your limit falls below that threshold, the carrier reduces your claim payout proportionally. This applies to partial losses as well as total losses, which is why even a modest underinsurance gap can be costly.
How often should I update my property values?
At least once a year, ideally before your renewal. Construction costs, material prices, and labor rates can shift meaningfully in a single year, and keeping your values current protects you from coinsurance penalties and ensures your coverage reflects today’s reality.
