Most commercial property owners in Ireland are insuring their buildings for the wrong amount. Not by a small margin. A commercial building insurance valuation is the process that establishes the correct figure: how much it would actually cost to rebuild the property from the ground up. And the gap between that number and what most buildings are currently insured for is the reason claims get paid out at a fraction of what owners expect.
In Ireland, the majority of commercial properties are insured for the wrong amount. The consequences of that only become visible when a serious loss occurs.
Why Commercial Property Insurance Valuation Is Not the Same as Market Value
This is the single biggest point of confusion in commercial property insurance, and it costs Irish businesses significant money every year.
The market value of a property reflects what a buyer would pay for it today. Location, demand, comparable sales, the state of the commercial property market. None of that has any relevance to what it would cost to rebuild the property if it were destroyed. The distinction between market value and reinstatement cost is one of the most consequential gaps in commercial property insurance.
Rebuild cost is driven by construction costs, not by what the market thinks a building is worth. A commercial premises in a town centre might have a relatively modest market value but an extremely high reinstatement cost, due to its age, construction method, materials, or restricted site access.
Run that calculation in reverse and you find properties in high-demand areas that are worth considerably more on the market than they would cost to rebuild. Insuring either figure incorrectly creates a serious problem.
When your buildings sum insured is based on market value rather than true rebuild cost, the figure is wrong in a way that only becomes visible at claim time. Your insurer is not obliged to tell you. That obligation sits entirely with you.
What a Commercial Building Insurance Valuation Actually Includes
Most property owners, when they think about rebuild cost, picture bricks, labour, and materials. That is the visible part. The full cost of rebuilding a commercial property is considerably more complex.
A proper valuation for insurance purposes accounts for demolition and site clearance first. Before any new construction begins, what remains of the damaged building must be safely dismantled, waste removed, the site made safe, and in some cases drainage and services reinstated from scratch. Depending on site constraints, access, and the type of construction being removed, demolition and temporary works alone can account for several additional percentage points of the total rebuild cost. These figures are substantial and rarely appear in generic calculator estimates.
Then there are professional fees. An architect, structural engineer, quantity surveyor, and project manager will all be involved in any significant commercial rebuild. Planning applications may be required. In some cases, a planning consultant will be needed as well. For commercial projects, professional fees are typically allowed at 8 to 12 percent of the core build cost, and that allowance must be included in the sum insured. It rarely is.
The rebuild itself includes all materials and labour to current building regulations. This matters more than most owners realise. If your building is ten or fifteen years old, a rebuild today must comply with current standards for insulation, fire safety, energy efficiency, and structural specification. In many cases, those standards have tightened considerably since the original construction. That often means the rebuild is more expensive than building it was in the first place, even before accounting for inflation.
Services, utilities, boundary structures, external works, drainage, specialist fit-out. All of it counts.
A reliable commercial building insurance valuation captures all of this. A figure pulled from an online calculator or applied as a percentage uplift at renewal does not.
Has Irish Construction Cost Inflation Made Your Valuation Out of Date?
A valuation that was accurate in 2019 or 2020 is unlikely to be accurate now. Material prices, labour costs, and supply chain pressures have all driven rebuild costs upward at a rate that most property insurance policies, with their standard annual indexation, have not kept pace with.
The Society of Chartered Surveyors Ireland publishes guidance on elemental rebuild costs by property type and region, and those figures have shifted considerably. A valuation carried out in 2019 or 2020 is not a reliable basis for your current sum insured. Even valuations conducted in 2021 or 2022 may be significantly out of date given the scale of cost movement in the Irish construction market.
Building materials spiked sharply after 2020 and have not returned to pre-2020 levels. For commercial properties with significant structural complexity or specialist materials, the gap between an older valuation and the current assessed rebuild cost can run to hundreds of thousands of euro. That is not a rounding error. It is the number that determines what you recover after a serious loss.
What Is the Average Clause and How Does It Reduce Your Claim?
The Average Clause is the mechanism in most commercial property insurance policies that causes the most financial damage to underinsured property owners.
If your property is insured for less than its true rebuild value, the insurer is entitled to treat you as your own insurer for the difference. In practice, this means your claim is reduced proportionally to the gap between what you insured for and what the property should have been insured for.
A practical example: if your property should be insured for €2 million but you have it insured for €1.4 million, you have covered seventy percent of its true value. When you make a claim, your insurer applies the same percentage to the payout. A valid claim worth €400,000 becomes a payout of €280,000.
The policyholder covers the remaining €120,000 themselves. Not because their claim was rejected. Not because there was a dispute about the cause of loss. Simply because the property was underinsured.
This is why the condition of average clause exists in policies, and why accurate property valuation is not optional for any commercial property owner who genuinely wants their insurance cover to function in a loss scenario.
Who Needs a Commercial Building Insurance Valuation
The short answer is any owner or occupier responsible for insuring a commercial property, but the cases where it matters most are worth naming specifically.
Owners of older commercial buildings face the greatest risk of underinsurance because build specifications from fifteen or twenty years ago bear little resemblance to current construction costs. Period properties with specialist materials or unusual construction methods can be particularly difficult to value accurately without an on-site assessment.
Property managing agents and management companies carrying insurance responsibility across commercial portfolios need accurate valuations for each asset. Applying a blanket sum insured across a portfolio is one of the most common sources of underinsurance in Irish commercial property. In practice, it almost always produces a mixture of over-insured and dangerously underinsured properties within the same portfolio, because no two buildings have the same rebuild cost.
For insurance brokers, the exposure is professional as much as practical. When a claim is paid out at a reduced figure due to underinsurance, the conversation about where the sum insured came from is not a comfortable one.
Lenders are more direct about it. Security over commercial property routinely comes with a requirement for up-to-date professional valuations as a condition of lending. A desktop estimate or an index-linked figure does not satisfy that requirement.
What Does a RICS Commercial Building Valuation Actually Assess?
An online rebuild calculator for commercial properties is useful in one specific way: it tells you that you probably need a proper assessment. It is not a substitute for one.
The limitations of a calculator-based approach are structural. A calculator applies standard rates per square metre across a building type. It does not account for the actual construction of your building, its condition, its site constraints, its height, its materials, its age, or the local factors that affect construction cost in your area.
A RICS-compliant reinstatement cost assessment, carried out by a Chartered Surveyor on site, captures all of these variables. The RICS professional standard for reinstatement cost assessments sets out exactly how this work should be approached: on site, not from a desk. A report produced under those standards carries weight with insurers, brokers, and underwriters precisely because it reflects what has actually been seen and assessed.
The valuation report gives you a defensible, professionally documented figure for your sum insured. It carries weight with underwriters, satisfies lenders, and removes ambiguity at claim time. Because it records not just the figure, but the reasoning behind it.
Some commercial property insurance policies are written on a Day One Reinstatement basis, which builds in an uplift percentage to allow for construction cost increases between the policy start date and any future claim. The declared value at inception still needs to reflect the true rebuild cost. A professionally assessed figure is the only reliable starting point for that calculation.
The SCSI rebuild calculator, published by the Society of Chartered Surveyors Ireland, provides indicative guidance for standard residential and some commercial property types. It is a starting point. For commercial properties with any complexity, or any commercial building where the stakes of underinsurance are significant, it is not the final answer.
How Often Should a Commercial Property Be Revalued for Insurance?
The standard professional recommendation is a full on-site reinstatement cost assessment every three to five years, with interim desktop reviews in between, particularly in periods of significant construction cost movement.
For any commercial property where the last assessment predates that period, the priority is straightforward: commission a current assessment before the next renewal. The gap between an older figure and current rebuild cost has, in many cases, widened significantly.
Some insurers and brokers apply indexation increases at renewal to maintain approximate alignment with cost movements. This helps, but it is not a substitute for a grounded assessment. Indexation applies a percentage change to a base figure. If the base figure was wrong to begin with, indexation preserves the error.
A desktop review in the years between full on-site assessments provides a cost-effective way to sense-check whether the insured figure remains reasonable, without the full cost of a site visit. This is a practical middle ground for properties that were properly assessed relatively recently but need ongoing attention.
How to Get Your Commercial Property Correctly Valued for Insurance
The starting point is not panic. Most commercial properties carrying inaccurate sums insured have never been assessed professionally, and the solution is straightforward.
Commissioning a commercial reinstatement cost assessment from a RICS-regulated Chartered Building Surveyor gives you a defensible, professionally prepared figure for your sum insured. That figure is the basis on which you and your broker adjust your insurance policy.
If you are a broker looking to ensure accurate commercial property coverage for your clients, or a property owner concerned that your current sum insured does not reflect reality, a professional valuation is the appropriate next step.
The cost of a professional reinstatement cost assessment is typically a small fraction of the potential uninsured shortfall on a single claim. Against the sums that the Average Clause can remove from a payout on an underinsured commercial property, it is not really a cost at all.
It is the price of knowing the number is right.
This article is for information only and does not constitute financial or insurance advice. For guidance on your specific property and policy, speak with a qualified professional.
Find out what your commercial property should be insured for.
Rebuild Valuation provides RICS-regulated reinstatement cost assessments for commercial properties across Ireland. To arrange an assessment with Trevor Kelly, Chartered Building Surveyor, arrange a reinstatement cost assessment.
Rebuild Valuation is an RICS-regulated reinstatement cost assessment practice based in Ireland. Trevor Kelly is a RICS Chartered Building Surveyor with over 20 years of experience across insurance claims and commercial property surveying.