Comparison value, asset value and income value explained clearly

Article L-0043 · 15.09.2026 · 7 min. reading time · Joé Christian Ewrard

What the three valuation methods actually do

A property valuation should answer the question of what price is likely to be achievable or appropriate under the prevailing market conditions. The result is not based solely on living space, the plot and the year of construction. Location, condition, potential uses, legal particularities and current demand also play a role.

The sales comparison value primarily considers the prices achieved for similar properties. The asset value focuses more on the plot, building and construction costs. The income value considers the sustainable income a property can generate.

None of these methods automatically reflects the eventual purchase price. A calculated value is a professionally derived guide. The price actually recorded in the notarised agreement only emerges from the interplay of supply, demand, financing options, negotiations and the personal motivations of those involved.

A sound valuation therefore does not begin with the selection of a formula. The first step is to establish what type of property is involved, how it is used and for what purpose the value is required. Different considerations may be important for a planned sale than for an inheritance, divorce, financing or tax-related matter.

When the sales comparison value is particularly meaningful

The sales comparison method is an obvious choice when there are sufficient sales of similar and genuinely comparable properties. Typical applications include owner-occupied apartments, undeveloped plots and largely standardised detached houses in locations with regular market activity.

The crucial word is comparable. Two houses may have the same living space and still be valued very differently. Plot layout, modernisation status, energy efficiency, micro-location, views, noise, parking spaces, outbuildings and potential encumbrances all affect the assessment.

Asking prices on property portals are only suitable for this purpose to a limited extent. They show what owners or estate agents are seeking to achieve. They do not reliably show the price at which a sale was actually completed. Listings that remain visible for a long time can also distort the picture, as properties offered at market-appropriate prices often disappear more quickly.

In the Eifel, comparability is further complicated by its fragmented structure. A house in Eifelkreis Bitburg-Prüm cannot be equated with a property in Trier, Trier-Saarburg or the Vulkaneifel solely because it is a similar size. Even neighbouring communities can differ noticeably in terms of infrastructure, suitability for commuters, demand for plots and building stock. Close to the border with Luxemburg, demand may also differ from that in more remote rural locations.

When the asset value takes centre stage

The asset value method is often used for owner-occupied houses where generating rental income is not the primary motivation for purchasing. In simplified terms, it comprises the value of the plot and the value of the buildings and other structures.

When assessing a building, the aim is not to add up old invoices. The starting point is modelled construction costs for a comparable building. Age, condition and special structural components are taken into account. The calculated result must then be adjusted to reflect conditions in the local property market.

This is precisely where a common misunderstanding arises: high construction costs do not automatically mean an equally high market value. An elaborately constructed house may include features that were valuable to the owner but that prospective buyers are not prepared to pay for in full. Conversely, a simple building in a highly sought-after location may achieve a price that cannot be explained by its building fabric alone.

Owners also often place a higher emotional value on their own work than the market rewards. Buyers primarily assess the result, condition and usability. They do not automatically take on the value of the personal time invested or the memories associated with the improvements. This can be disappointing for owners, but it should be addressed early and respectfully.

When the income value becomes decisive

The income approach is particularly relevant when a property is purchased mainly for its ongoing income. This includes apartment buildings, rented residential and commercial buildings, and many commercial properties.

The focus is not solely on the current rent. What matters is the income that can be expected on a sustainable basis and the costs that remain with the owner. Tenancy agreements, vacancy risks, management, necessary investments and the building's remaining economic life also influence the assessment.

High current income therefore does not necessarily result in a high income value. If the rental income is not secure over the long term, there is a backlog of maintenance, or part of the space is difficult to let, the risk must be taken into account. Conversely, a reliably let property may be attractive to investors despite unremarkable features.

The valuation of mixed-use properties is more demanding. A flat above a retail unit, a residential building with a medical practice, or a former agricultural property with rented units can rarely be assessed using a single simple metric. In such cases, use, contracts, structural separation and regional lettability must be considered together.

Why the results may differ

The methods do not answer exactly the same question. The sales comparison approach is based on the observed market. The cost approach considers the land and building fabric. The income approach is derived from the property's economic use. The results may therefore differ, even though each method has been applied in a professionally sound and transparent manner.

An individually designed detached house may, for example, have a high value under the cost approach. However, if there is insufficient demand for such a property in its location, the price achievable on the market may be lower. For a rented house, by contrast, the income value may carry more weight, even if its features and building fabric appear unremarkable at first glance.

Differences also arise from the use of different underlying information. Were the same floor areas used? Are modernisation measures documented? Was an ancillary building recorded correctly? Are any rights or encumbrances known? Were actual purchase prices or merely asking prices used? Different answers to these questions alone will change the result.

It is not a problem when values differ. It becomes a problem when the difference cannot be explained. A robust valuation therefore clearly states which method was selected, which documents were available, which assumptions were made and how the market adjustment was carried out.

Which method matters when selling

For a sale, what matters is using the method that suits the property and the behaviour of typical buyers. For an owner-occupied apartment, comparisons with similar sales can be particularly reliable. For an individually designed home, the asset value can provide important guidance. For a rented apartment building, prospective buyers will generally focus on the income and the associated risks.

In practice, it can be useful to use a second method as a cross-check. This does not mean that a simple average is then calculated. An average would merely obscure the differences. What matters instead is which result most convincingly reflects the regional market and the likely purchasing decision.

For owners, it is also important to distinguish between the property value and the asking price. The asking price is part of the sales strategy. If it is set too high, serious enquiries may fail to materialise, and after being on the market for an extended period, the property may appear to require explanation. If it is set too low, there is concern about giving away assets below their value. A sound valuation establishes the range within which this decision can be made on a reasoned basis.

The valuation must not be tailored to achieve a desired result. A high value may sound appealing at first, but it is of no help if buyers, banks or their valuers cannot understand how it was determined. A realistic starting point provides better protection against lengthy negotiations, financing problems and purchase commitments falling through.

Which documents make a valuation more reliable

A good valuation begins with complete information. This usually includes documents relating to the land, the building, floor areas, floor plans, permits and modernisation work. For rented properties, tenancy agreements, income and non-recoverable costs must also be included.

Missing documents do not automatically make a valuation impossible. However, they increase uncertainty. A converted area for which the permit or floor area calculation is unclear must not be treated as regular living space without verification. Visible modernisation work should also be traceable in terms of when it was carried out and what it involved.

In estate agency practice, owners often initially consider certain particular features to be insignificant. These may include rights of way, rights of residence, unfinished construction work, damp damage or shared driveways. These very points can be significant for prospective buyers and financing banks.

Legal and tax matters belong in the hands of the relevant specialists. An estate agent can organise documents and highlight any apparent need for clarification. However, binding information on rights, contracts, taxes or liability issues should be provided by a notary, lawyer or tax adviser.

How to recognise a transparent valuation

A reliable valuation explains not only the result, but also how it was reached. It describes the property, assesses its location and identifies strengths and risks relevant to its value. It also makes clear why a particular method was used and what significance any cross-check calculations have.

Caution is advisable when a value is presented as certain without an inspection and based solely on a few details provided online. Digital calculators can provide an initial indication. However, they often do not adequately account for individual plots of land, extensions, modernisation work, damage, rights and the specific micro-location.

Nor should a valuation merely confirm the highest conceivable price. Anyone wishing to sell does not need a flattering figure, but a well-founded assessment. It should also withstand critical questions from prospective buyers and identify potential financing risks at an early stage.

Für Eigentümer entsteht dadurch ein praktischer Vorteil: Sie können Entscheidungen ruhiger treffen. Das betrifft den Angebotspreis, notwendige Vorbereitungen und die Frage, welche Käufergruppe angesprochen werden sollte. Auch innerhalb einer Erbengemeinschaft oder Familie lässt sich eine sachlich erklärte Bewertung meist besser besprechen als eine bloße Preisbehauptung.

Wenn Sie über einen Verkauf nachdenken, sammeln Sie zunächst die verfügbaren Objektunterlagen und lassen Sie klären, welches Bewertungsverfahren zu Ihrer Immobilie passt. Für ein Haus, eine Wohnung oder ein Anlageobjekt im Eifelkreis Bitburg-Prüm, in Trier, Trier-Saarburg, der Vulkaneifel oder an der Grenze zu Luxemburg kann PRIOCASA die regionalen Besonderheiten einordnen und den nächsten Schritt mit Ihnen besprechen. Bei rechtlichen oder steuerlichen Fragen sollten zusätzlich Notar, Rechtsanwalt oder Steuerberater eingebunden werden.

Frequently Asked Questions

Welches Bewertungsverfahren ist für ein Einfamilienhaus richtig?

Bei selbst genutzten Einfamilienhäusern können Vergleichswert und Sachwert relevant sein. Welche Methode stärker gewichtet wird, hängt von der Vergleichbarkeit, der Lage und der Art des Gebäudes ab. Ein individuell gebautes Haus in einer ländlichen Lage erfordert häufig mehr sachverständige Einordnung als ein weitgehend standardisiertes Objekt.

Warum nennt eine Bank einen anderen Wert als der Makler?

Banken bewerten Immobilien vor allem im Hinblick auf die Absicherung einer Finanzierung. Ein Makler betrachtet dagegen den voraussichtlich erreichbaren Marktpreis im konkreten Verkauf. Unterschiedliche Zwecke, Daten und Risikoeinschätzungen können daher zu abweichenden Ergebnissen führen.

Kann ich den Immobilienwert aus Angebotspreisen im Internet ableiten?

Angebotspreise bieten Anhaltspunkte, sind aber keine verlässlichen Verkaufspreise. Sie zeigen weder das spätere Verhandlungsergebnis noch alle wertrelevanten Eigenschaften der angebotenen Immobilien. Besonders in kleineren regionalen Märkten können wenige unpassende Vergleichsangebote das Bild deutlich verzerren.

Ist der höchste errechnete Wert automatisch der richtige Verkaufspreis?

Nein. Entscheidend ist, welches Verfahren die Immobilie und das Verhalten der wahrscheinlichen Käufer am besten abbildet. Der höchste Wert kann sich als nicht marktgerecht erweisen und die Vermarktung erschweren.

Was passiert, wenn Vergleichswert und Sachwert deutlich abweichen?

Dann sollten Daten, Annahmen und Marktanpassung geprüft werden. Die Abweichung kann sachlich begründet sein, etwa durch eine besondere Bauweise oder eine schwache Vergleichsdatenlage. Sie sollte jedoch verständlich erklärt werden, bevor daraus eine Preisstrategie entsteht.

Themen: Immobilienbewertung, Vergleichswertverfahren, Sachwertverfahren, Ertragswertverfahren, Verkehrswert, Immobilienwert Eifel, Hausverkauf Trier, Makler Bitburg

Responsible for this post: Joé Christian Ewrard — Owner & Broker IHK, PRIOCASA Immobilien & Financial services. Last updated: 15.09.2026. The draft was created with the support of artificial intelligence and was reviewed and approved before publication (AI Transparency). This post does not replace legal or tax advice; for individual questions, please contact a notary, lawyer, or tax advisor.

Current Offers

View all offers →

Fits well

View all guides →