Replacement cost

The replacement cost is a valuation metric in real estate appraisal that indicates what it would cost to rebuild an existing building identically as a new structure at the present time. It forms the basis of the cost approach and also serves as the benchmark for the insured amount in home insurance. The replacement cost is independent of market value or fair market value and reflects pure construction costs.

Replacement Cost in the Cost Approach

The cost approach is one of the three recognized valuation methods under the Real Estate Valuation Ordinance (ImmoWertV). It is primarily used for owner-occupied single-family homes and buildings for which sufficient comparative data is not available.

In the cost approach, the replacement cost (= construction cost) of the building is calculated by multiplying the standard construction costs (NHK 2010 or NHK 2000) by the gross floor area (BRI) of the building. The NHK value includes average construction costs per cubic meter of enclosed space, broken down by building type and standard of finish.

Age-related and technical depreciation (amortization) is then deducted from the new construction value to determine the so-called building asset value. Together with the land value, this yields the preliminary property value, which is adjusted to actual market conditions using a market adjustment factor (property value factor).

Especially when using current construction costs, the new construction value is heavily dependent on price trends in the construction industry. Since 2015, construction costs in Germany have risen significantly-the construction price index of the Federal Statistical Office (base year 2010 = 100) is now well above the base value. This means that the new construction value for many older buildings has risen sharply due to inflation in construction costs, without the building itself having become more valuable.

Replacement Cost and Insurance Coverage

In residential building insurance, the replacement cost is used as the basis for the sum insured. Underinsurance occurs when the insured amount is below the actual replacement cost-in the event of a claim, the insurer may then reduce the compensation proportionally. Regularly adjusting the sum insured to the construction cost index is therefore highly recommended.

Many building insurance policies now offer sliding-scale replacement cost coverage, in which the sum insured is automatically adjusted according to the construction price index. This minimizes the risk of underinsurance. Owners who have not reviewed their policy for several years should do so as soon as possible-especially if extensions or extensive renovations have been carried out in the meantime.

Difference Between New Construction Value, Market Value, and Current Market Value

These three terms are often confused in everyday use:

• New Construction Value: What would the building cost to build today? (construction costs)
• Current market value (replacement cost): New construction value minus age-related depreciation
• Market value: The price achievable on the real estate market-influenced by location, supply, and demand, independent of construction costs

In high-price areas such as the Nuremberg metropolitan area, the market value often lies far above the asset value (new construction value minus depreciation), because land value and market dynamics drive the price. In structurally weak regions, however, the market value may be below the new construction value-an indication that the market does not recognize the construction costs.

Practical Tip for Property Owners in Nuremberg and Franconia

We recommend that property owners in the Nuremberg metropolitan area regularly review the replacement cost of their building-and thus the insured value in their home insurance policy. Especially after extensive renovations (new roof, new heating system, bathroom renovations), the replacement cost increases significantly. An outdated insured value can lead to significant undercompensation in the event of a claim.

In Nuremberg, we observe-particularly with older buildings from the 1950s and 1960s-that replacement values are significantly higher than the original insurance coverage amounts due to increased construction costs and extensive renovations. Contact us-we can connect you with insurance experts in the region.

Frequently Asked Questions

How do I calculate the replacement cost of my home?

An accurate calculation requires an appraiser to determine the building’s gross floor area and multiply it by the current standard construction costs (NHK) for the respective building type. As a guide: The Federal Statistical Office’s construction price index tracks the trend in construction costs and indicates whether your current insurance coverage is still up to date.

Why does the replacement cost differ from the purchase price?

The purchase price (market value) is determined by the market-that is, by supply, demand, and location. The replacement cost, on the other hand, is based exclusively on construction costs. In highly sought-after locations, the market value often significantly exceeds the replacement cost because land value and market trends drive the price. In structurally weak areas, the market value may also be below the replacement cost.

What happens in the event of a claim if my insurance is underinsured based on the replacement cost?

In the event of underinsurance, the insurer may reduce the compensation proportionally. For example, if the insurer pays out only 80% of the replacement cost because the sum insured covers only 80% of the actual replacement cost, the owner must cover the remainder out of their own pocket. This can lead to a significant coverage gap, especially in the case of major damage such as fire or storm damage.

How does inflation in construction costs affect the replacement cost?

Sharply rising construction costs-as seen in Germany between 2020 and 2024-directly increase the replacement value, as all production costs become more expensive: materials, wages, and energy costs for the construction phase. The Federal Statistical Office’s construction price index (base year 2015 = 100) stood at around 160 in 2024 - meaning new buildings cost about 60% more than in 2015. Insurance coverage amounts that have not been adjusted since then are correspondingly underinsured. Owners whose policies include sliding replacement cost coverage are automatically adjusted; for older policies without this feature, a manual review is urgently required.

New Construction Value in Inheritance and Gift Tax

In the context of inheritances and gifts, the new construction value plays an indirect role: The tax office determines the so-called property value, which for developed properties is calculated using the asset value method based on standard construction costs-that is, effectively based on the new construction value. A high new construction value thus leads to a higher property value and potentially to a higher tax burden. Owners who transfer a property as part of an inheritance or gift may submit an expert appraisal demonstrating a lower market value-this lower value may be recognized for tax purposes (Section 198 of the German Property Transfer Tax Act). This is always worthwhile when the tax-calculated new construction value exceeds the actual market value, which is often the case for properties in structurally weaker locations or for buildings in need of renovation.

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