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The Growing Risk of Underinsurance for Commercial Property Owners

April 7, 2026

Commercial property owners are increasingly exposed to the risk of underinsurance, often without realising it. Many buildings are insured for amounts that no longer reflect the true cost of rebuilding, leaving owners vulnerable to significant financial shortfalls in the event of damage or loss.

For property owners, lenders, and asset managers, ensuring that insurance values are accurate and regularly reviewed is an important component of prudent asset management.

Why Underinsurance is Becoming More Common

Several factors are contributing to a growing gap between insured values and the true cost of reinstatement.

1. Rapid increases in construction costs

Construction costs have risen substantially in recent years due to labour shortages, supply chain pressures, and higher material costs. Insurance policies that rely on older cost assumptions may no longer reflect the actual cost of rebuilding a property today.

Even policies that include automatic indexation may not keep pace with real construction cost escalation.

2. Insured values are not regularly reviewed

Many commercial properties are insured based on estimates provided when the policy was first arranged. If the insured value is not reviewed periodically, it can quickly become outdated.

As a general guide, insured values should be reviewed every two to three years, or sooner if there are significant changes to the property or construction market conditions.

3. Confusion between market value and replacement cost

A common misunderstanding is using a property's market value as the basis for insurance.

Insurance cover should reflect the full replacement cost of the improvements, not the market value of the asset. Market value includes the land component and reflects investment factors such as income, demand, and location, whereas insurance focuses on the cost to rebuild the structure.

In some cases, replacement costs can exceed the building component of market value, particularly in regional areas or where specialised construction is involved.

4. Additional costs are often overlooked

Rebuilding a commercial property typically involves more than construction costs alone. A comprehensive reinstatement cost should also consider:

  • Demolition and debris removal
  • Professional fees (architects, engineers, project managers)
  • Planning approvals and certification
  • Compliance with updated building regulations
  • Escalation in building costs during the reconstruction period

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If these elements are not included in the insured amount, the property may be materially underinsured.

5. Changes to building codes and regulations

Following a major loss, rebuilding must generally comply with current building standards, not those that applied when the property was originally constructed.

For older commercial buildings, this can significantly increase the cost of reinstatement due to requirements relating to fire safety, accessibility, structural standards, and energy efficiency.

The Impact of Average Clauses

Most commercial property insurance policies include an average clause. This means that if a property is underinsured at the time of a claim, the insurer may reduce the payout proportionally.

For example, if a building that would cost $10 million to rebuild is insured for $7 million, the property is effectively insured for only 70% of its value. In this situation, a $1 million claim may result in the insurer paying only $700,000, with the balance borne by the owner.

As a result, underinsurance can significantly affect claim outcomes, even in cases of partial loss.

How Property Owners Can Reduce the Risk

Commercial property owners can take several steps to reduce the risk of underinsurance:

  • Obtain independent insurance replacement valuations from qualified property professionals
  • Review insured values regularly, typically every two to three years
  • Update insurance cover following renovations, extensions, or major upgrades
  • Ensure allowances are made for professional fees, demolition costs, and regulatory compliance
  • Discuss appropriate indexation arrangements with their insurance broker

The Role of Professional Insurance Valuations

Professional insurance valuations provide an independent assessment of the current replacement cost of improvements, taking into account construction costs, professional fees, demolition costs, and relevant regulatory considerations.

For commercial property owners, lenders, and asset managers, these valuations play an important role in ensuring that insurance arrangements align with the true cost of reinstating the asset.

Underinsurance can create substantial financial exposure for commercial property owners, particularly in a construction environment where costs are changing rapidly. Regular review of insured values, supported by professional insurance valuations, is an important step in protecting property assets and ensuring adequate insurance coverage.

Disclaimer: This post is intended as general information only and does not constitute financial, insurance, or professional advice. Property owners should review their individual insurance policies and seek advice from their insurance broker, insurer, or professional advisers to ensure their coverage is appropriate for their circumstances.

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Market Update
April 7, 2026

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