What is a hedonic real estate valuation?

The principle: A shopping cart full of features

How does hedonic real estate valuation work?

Imagine you're going shopping. You know how much a liter of milk costs and how much a pound of butter costs. At the checkout, the sum of the individual prices equals the total price.

This is exactly how a hedonic real estate valuation works . It does not consider a property as a whole "house", but as a bundle of properties.

Every feature has a price tag dictated by the market:

• How much is 10 square meters of additional living space worth?
• What price premium is justified by a sea view?
• What kind of reduction in value is caused by traffic noise?

Hedonic real estate valuation uses vast databases containing thousands of actual transactions (transfers of ownership). Through complex statistical methods (multiple regression analysis), it determines how much buyers have been willing to pay for precisely these characteristics in recent months.

Why banks love hedonic real estate valuation

Almost all Swiss banks and pension funds now use hedonic real estate valuation for standard transactions. The reasons are obvious:

• Efficiency: A traditional appraisal takes days and costs thousands of francs. A hedonic property valuation takes seconds and costs a fraction of the price.
• Objectivity: A human appraiser can have a bad day or be dazzled by the charm of an old fireplace. Hedonic property valuation is unemotional. It is based on facts.
• Market proximity: Since the hedonic real estate valuation is constantly fed with new sales data, it reflects current market activity (e.g., a price increase in the neighborhood) extremely promptly .

The criteria of hedonic real estate valuation

For a hedonic property valuation to be accurate, the input data must be correct. The algorithm weights these data differently.

• Location (macro and micro): This is the most important factor. Is the house located in a tax-friendly municipality (macro location)? Is it quiet or noisy (micro location)? A hedonic property valuation can often analyze the micro location with meter-level precision.
• Property data: Year of construction, volume, net living area and plot area are the basis for every hedonic real estate valuation .
• Condition: This is where it gets tricky. You often have to specify whether the kitchen and bathroom are "like new," "good," or "in need of renovation." Since this input is subjective, it's a potential source of error in hedonic property valuation .

Limits of hedonic real estate valuation

As ingenious as the system is, it's not perfect. Hedonic real estate valuation is a statistical model. It works wonderfully for the average buyer, but poorly for the unusual.

• Unique properties: A converted castle or a listed farmhouse defies easy categorization. Comparable data is unavailable. In these cases, a hedonic property valuation often yields inaccurate results.
• Luxury segment: If a house has gold-plated faucets, hedonic real estate valuation doesn't recognize this. It only sees "Bathroom: renovated". The immense added value of luxury features is often underestimated by hedonic real estate valuation .
• Structural defects: The algorithm doesn't detect dampness in the basement or leaky roofs. A hedonic property valuation assumes average building quality unless you specify otherwise.

Hedonic real estate valuation in practice

You will usually encounter hedonic property valuation in two situations:

• Regarding the mortgage: The bank checks whether the purchase price is justified. If the purchase price is 1.5 million, but the bank's hedonic property valuation is only 1.2 million, you have a problem. The bank will only finance the lower value (lower of cost or market principle).
• When selling: Many online portals offer a free hedonic property valuation to generate leads. This gives you an initial price range.

Criticism of the method

Critics argue that hedonic property valuation can amplify existing trends. If all banks use the same data showing rising prices, they will issue larger mortgages, which in turn drives prices up even further. Moreover, hedonic property valuation is a "black box." You see the result, but the exact formula behind it is a trade secret of the providers (such as IAZI, Wüest Partner, or Fahrländer).

Comparison: Hedonic vs. expert estimate

When should you rely on a hedonic property valuation and when do you need a human?

• Standard apartment/house: Here, hedonic property valuation is unbeatable. It is precise enough (often +/- 5% deviation) and cost-efficient.
• Divorce/Inheritance: When disputes threaten, a hedonic property valuation is often questioned. A detailed expert report is more robust in such cases.
• Special properties: Hedonic real estate valuation is unsuitable for commercial properties or building land reserves .

Conclusion

Hedonic property valuation has revolutionized the Swiss real estate market. It has brought transparency and speed to a previously sluggish process. For 90% of all owner-occupied homes in Switzerland, hedonic property valuation provides the most reliable market value, as it is based on actual sales and not wishful thinking.

However, you should n't consider hedonic property valuation an infallible law. It's a tool. It sees the market, but not the charm of your living room. If you own a standard property, it's the gold standard. If you own a rarity, it's just an indicator.

For a fast, modern and independent assessment of your property, based on precisely these principles, it is recommended to use Loft 's hedonic property valuation to obtain an initial sound data basis.

Glossary

• Hedonic property valuation: A statistical comparative valuation method that calculates the price of a property based on its characteristics (location, size, condition) and historical transaction data.
• Comparative valuation method: The method of determining the value of a property by comparison with similar properties that have already been sold – the basis of hedonic real estate valuation .
• **Micro-location: The immediate surroundings of the property (noise, view, neighborhood), which is heavily weighted in hedonic property valuation .**
• Regression analysis: The mathematical method behind hedonic real estate valuation to determine the influence of individual features on the overall price.
• Standard object: A property (e.g., a 4-room apartment) for which there is a lot of comparative data and for which hedonic property valuation works most accurately.