Market adjustment factor

Market Adjustment Factor - The market adjustment factor, also known as the real value factor, is a correction factor used in the real value method to adjust the calculated real value of a property to reflect actual market conditions.

Function and Calculation of the Market Adjustment Factor

In the asset value method, the so-called preliminary asset value is first calculated. This consists of the land value and the building’s asset value, with the building’s asset value being determined based on standard construction costs minus depreciation due to age. The problem: In practice, this calculated value often deviates from actual market conditions. This is where the market adjustment factor comes into play.

The Appraisal Committee for Real Estate Values determines the market adjustment factor by analyzing actual purchase prices. To do this, real transactions are analyzed, and the purchase price achieved in each case is compared to the calculated real value of the property. A large number of such comparisons yields a statistically validated factor, which is differentiated by building type, year of construction, and region.

A market adjustment factor greater than 1.0 means that buyers in the market are willing to pay more than the calculated property value-typical for sought-after locations with high demand. A factor less than 1.0 indicates that the market is trading properties below their calculated real value, which occurs in structurally weak regions or for building types with low demand. With a factor of exactly 1.0, the calculated real value and the market price are equal.

The application is very simple: The preliminary asset value is multiplied by the market adjustment factor, and the result is the market-adjusted asset value, which is intended to reflect the market value of the property.

Significance for Real Estate Valuation

The market adjustment factor is not an optional component but a mandatory element of the standardized asset value determination in accordance with the Real Estate Valuation Ordinance (ImmoWertV). Without this factor, the cost approach would be a purely theoretical calculation with no connection to the real market. Especially for single-family and two-family homes, for which the cost approach is the preferred method, the factor has a significant influence on the valuation result. Deviations of 20 to 30 percent between the preliminary and market-adjusted cost values are not uncommon.

Distinction: Market Adjustment Factor vs. Real Estate Interest Rate

The market adjustment factor and the real estate interest rate essentially serve a similar function-they establish the link between the calculated value and market conditions-but are applied in different methods. While the market adjustment factor is used in the cost approach and typically applies to owner-occupied residential properties such as single-family homes, the real estate interest rate governs the income approach, which is decisive for rented multi-family homes and commercial properties. Both factors are empirically derived by the Appraisal Committee from actual market data and are regularly updated.

Impact of Market Changes on the Factor

The market adjustment factor is not a static value but reacts to market changes. During the high-price phase of 2020/2021, the real value factors in many cities rose well above 1.5-meaning the market was paying 50 percent more than the calculated real value. Following the interest rate turnaround in 2022 and the subsequent price decline, these factors corrected downward. An appraisal that applies a factor from 2021 to a current valuation significantly overestimates the property’s value. Conversely, factors that are too low from years of economic downturn can underestimate the value. The timeliness of the market adjustment factor used is therefore an important quality criterion for any expert appraisal.

Practical Tip for Nuremberg and Franconia

In the Nuremberg metropolitan region, the Appraisal Committee regularly publishes updated real value factors in the real estate market report. For single-family homes in prime Nuremberg locations, the market adjustment factors are generally above 1.0, reflecting the high demand in the region. In more rural parts of Franconia-such as northern Middle Franconia or the Ansbach district-the factors, however, sometimes fall well below 1.0.

We recommend that owners always take current regional property value factors into account when estimating their property’s value, rather than relying on generic online appraisals. Especially following the market upheaval of 2022-2024, a current appraisal with a correctly applied factor is the only reliable basis for buying, selling, and financing decisions.

Frequently Asked Questions

Where can I find the current market adjustment factor for my region?

The market adjustment factors are published by the relevant appraisal committee in the real estate market report. For Nuremberg and the surrounding counties, the appraisal committee at the City of Nuremberg or the District Office is responsible. The reports can be obtained there for a fee and contain differentiated factors based on building type, year of construction, and location.

Does the market adjustment factor also apply to the income approach?

No, the market adjustment factor is specific to the cost approach. In the income approach, which is primarily used for rental properties, the market adjustment is established via the property interest rate. This serves a comparable function but is determined differently and has a different impact on the valuation result.

Can the market adjustment factor significantly alter the property value?

Yes, the impact can be substantial. In sought-after urban locations, a factor of 1.3 can increase the preliminary asset value by 30 percent. Conversely, a factor of 0.7 in less sought-after areas can reduce the value by 30 percent. That is why choosing the correct, up-to-date factor is crucial for a realistic valuation.

What happens if an appraiser uses an outdated market adjustment factor?

The result of the appraisal may deviate significantly from the actual market level. In rising markets, an outdated factor leads to undervaluation; in declining markets, to overvaluation. In the case of legally binding appraisals-for example, for courts, banks, or the tax office-an appraisal with methodological flaws can be challenged or corrected by a second appraisal.

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