Practical Valuation Approach: Achieve the Optimal Property Value

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An expert is explaining the value of his property to an older man.

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(ex: Photo by

An expert is explaining the value of his property to an older man.

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An expert is explaining the value of his property to an older man.

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Practical Valuation Approach: Achieve the Optimal Property Value

Practical Valuation Approach: Achieve the Optimal Property Value

Practical Valuation Approach: Achieve the Optimal Property Value

5 Jun 2025

11

Minutes

Federico De Ponte

Expert in Real Estate Valuation at Auctoa

5 Jun 2025

11

Minutes

Federico De Ponte

Expert in Real Estate Valuation at Auctoa

Are you faced with the complex task of determining the value of a property? A <strong>practical valuation approach</strong> is crucial to avoid financial pitfalls and make informed decisions. This article shows you how to determine the realistic market value of your property using the right methods and data, helping you achieve your goals faster.

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The topic briefly and concisely

A practical valuation approach relies on the three legally recognised methods: comparative value, income, and intrinsic value methods, with the choice depending on the type of property and the purpose of the valuation.

The ImmoWertV provides the legal framework in Germany and ensures that valuations are transparent and comparable.

Digital tools can provide an initial quick assessment, but for complex cases or legally sound reports, expert knowledge is essential to avoid misjudgments of up to 20%.

Do you know the true value of your property in an ever-changing market? Many owners underestimate the complexity of a precise valuation, which can lead to suboptimal sales or investment decisions. A practical valuation approach based on solid data and recognised procedures is your key to financial clarity and security. This guide provides you with a detailed insight into the various valuation methods, explains their areas of application, and shows you how to avoid common mistakes. This way, you gain the necessary knowledge to not only understand the value of your property but also actively optimise it and realise its full potential.

Laying the Foundations: Why a Systematic Evaluation Approach is Indispensable

The valuation of real estate in Germany is clearly regulated by the Immobilienwertermittlungsverordnung (ImmoWertV). This regulation specifies three permissible valuation methods that ensure transparent and comparable value assessments. A systematic approach is necessary to achieve a realistic value when selling, inheriting, or assessing assets and to avoid financial disadvantages, which often amount to five-figure sums. Knowing the property value is essential, for example, in inheritance cases for the correct calculation of inheritance tax, which can be as much as 50%. A solid valuation approach helps you navigate these complex situations with confidence. Choosing the right method forms the foundation of any successful real estate strategy.

Understanding the Three Core Methods of Real Estate Valuation in Detail

For a practical valuation approach, there are three recognised methods available, whose selection depends on the type of property and the purpose of the valuation. The comparative value method analyses actual sale prices of similar properties and often provides the most realistic values, ideal for owner-occupied properties and plots of land. The income value method focuses on future income, such as rental income; it is primarily used for investment properties such as multi-family houses or commercial properties. The asset value method determines the value based on the building's construction costs and the land value, minus depreciation due to age, and is often applied to owner-occupied properties without sufficient comparable data. A combination of several methods can, in certain cases, as practised by many surveyors, lead to an even more precise result. Learn more about the individual steps.

The Comparative Value Method: Market Proximity Through Real Transactions

The comparative value method is considered particularly close to the market because it is based on actual purchase prices of comparable properties. Appraisal committees maintain purchase price collections, which serve as an important data source. Numerous factors must be considered for an accurate evaluation:

  • Location and micro-location of the property (e.g. infrastructure, noise pollution)

  • Size and condition of the plot (average 500-800 sqm for single-family houses)

  • Type and size of the building as well as its facilities (e.g. number of rooms, living area)

  • Year of construction and energy condition (energy efficiency classes A+ to H)

  • Legal circumstances (e.g. heritage protection, right of way)

This method is superbly suited for standard properties like single-family houses or condominiums in areas with a sufficient number of comparable properties. The accuracy depends heavily on the quality and quantity of the available comparable data; often, at least 10-15 comparable properties are utilised.

The income approach: Accurately calculating return potentials

The income approach is the key to valuing investment properties where generating yield is paramount. It determines the value based on sustainable rental income. The calculation is complex and involves several steps, starting with the net annual income, which is derived from the gross income minus non-allocable operating costs (approximately 15-25% of the gross income). This net income is then capitalised using a property-specific capitalisation rate (often between 3% and 7%) and the remaining useful life of the property. The land value, determined separately, is added to the capitalised net income to obtain the income value. This method is typically applied to multi-family houses with at least three residential units and commercial properties. An effective valuation approach also considers vacancy risks of around 2-5%. The complexity often requires expert knowledge to avoid valuation errors of up to 20% of the property's value.

The asset value method: Objectively determining substance values

If there are no direct comparison data or income values available for a property, the cost approach provides a solid practical valuation method. It focuses on the tangible value and is particularly suitable for owner-occupied single-family and two-family houses or special properties. The calculation is based on three main components: the land value (determined using standard land values), the building production costs (based on normal production costs, e.g., NHK 2010), and the costs of the external facilities. A deduction for age-related depreciation is made from the building production costs, which depends on the total useful life (often 80-100 years for residential buildings) and the age of the property. A market adjustment factor, reflecting the current market conditions (which can range between 0.8 and 1.5), is then applied to the preliminary cost value to arrive at the final cost value. This method is transparent but can only partially capture market dynamics. However, it is very helpful for a first assessment.

Important aspects of applying the cost approach

The correct application of the cost approach requires careful consideration of several parameters:

  1. Land value determination: Use of current standard land values from expert committees.

  2. Building production costs: Application of standard production costs (NHK) adjusted by the building price index (often an increase of 3-5% p.a.).

  3. Age-related depreciation: Linear calculation based on age and typical total useful life (e.g., 1.25% per year over 80 years).

  4. Incidental construction costs: Consideration of approximately 15-20% of the production costs.

  5. External facilities: Separate evaluation of garages, paths, enclosures (often generally 2-5% of the building value).

  6. Market adjustment factor: Derived from market data to reflect the regional demand situation.

Although it assesses the substance, market adjustment is crucial to obtain a realistic market value, which can deviate up to 30% from the pure substance value.

Choosing the Right Valuation Approach: Property Type and Purpose Decide

Selecting the appropriate valuation method is a critical step for a successful practical valuation approach. For owner-occupied single-family homes and condominiums, the comparative value method is often the first choice, as it directly reflects market prices. If there are not enough comparable data available, the cost approach is an option. For income-generating properties such as rented multi-family houses or commercial real estate, the income approach yields the most meaningful results, as it focuses on the income potential of the property. In complex cases or for validation, experts often combine two methods; ideally, the deviation in results should not exceed 10-15%. Knowledge of helpful tools can support the process. Ultimately, the best method depends on your specific valuation purpose – whether it's for sale, financing, or asset inventory.

Avoid common mistakes and ensure assessment quality

A common error in property valuation is the insufficient consideration of the micro-location, which can affect the value by up to 20%. An outdated data basis or the wrong choice of valuation method often leads to significant misjudgements as well. For instance, applying the cost approach without correct market adjustment can result in a value discrepancy of 15-25%. To ensure the quality of your practical valuation approach, it is important to keep all relevant documents, such as the land register extract, building plans, and energy performance certificate (mandatory since 2014), up-to-date and complete. The identification of all factors affecting value is crucial. For a legally sound valuation or complex cases, commissioning a certified expert, whose valuation report often costs between 0.5% and 1% of the market value, is indispensable. Careful documentation and the plausibility check of the results, for example, by comparing with online property value calculators that often use the comparative value method, increase reliability.

Checklist for Quality Assurance of Your Property Valuation

To maximize the accuracy of your valuation, consider the following points:

  • Data Recency: Land reference values and comparative prices should be no older than 6-12 months.

  • Completeness of Documents: Land register, energy performance certificate, building description, proof of renovations.

  • Object-Specific Characteristics: Accurately capture special features, structural damages, or third-party rights (e.g., right of residence).

  • Correct Choice of Method: Suited to the property type and occasion for valuation.

  • Market Adjustment: Consideration of the current supply and demand situation.

  • Plausibility Check: Comparison with at least one alternative source or method.

  • Transparent Documentation: Clearly record all assumptions and calculation steps.

Observing these points can improve the accuracy of the valuation by up to 15%.

practical-assessment-approach

Nowadays, numerous digital tools support a practical valuation approach. Online real estate value calculators, such as those offered by LeoRes, often use the comparative value method and draw on large databases with millions of comparable objects to provide an initial market value estimate – often within minutes and free of charge. These tools take into account factors such as location, size, year of construction, and features. For an initial orientation, these calculators are very useful and can provide a value range of +/- 15% of the actual market value. However, for more complex valuations, legal disputes, or when individual features (e.g., a pool or heritage protection conditions) are significant, expert advice is essential. A qualified expert can produce a detailed report that considers all three methods, with costs often ranging from 0.5% to 1.5% of the property's value. Auctoa offers an innovative way with the ImmoGPT-Chat to quickly resolve initial questions and initiate a well-founded Auctoa valuation.

Conclusion: Achieving optimal results with a well-founded evaluation approach

What is the difference between market value and sale price?

The market value (or fair value) is the price that could be achieved at a specific point in time under normal business conditions, considering legal conditions and factual characteristics, without regard for unusual or personal circumstances (§ 194 BauGB). The actual sale price may differ, influenced by individual negotiations or special circumstances.

What documents do I need for a property valuation?

For a comprehensive property valuation, a current land register extract, building plans (floor plans, sections, elevations), a building description, the energy certificate, evidence of modernisations, and for investment properties, rental agreements and service charge statements, are required.

How long is a property valuation valid?

A property valuation is always a snapshot as of the valuation date. Since market conditions can change, it is advisable to update a valuation after 6 to 12 months, especially if planning to sell.

Can I value my property myself?

You can make an initial assessment yourself, for example using online calculators or by comparing with listings. However, for a precise and recognised valuation, especially for official purposes (banks, courts, tax offices), a qualified expert is advisable to avoid misjudgments.

What role does the property interest rate play in the income approach?

The property interest rate is a capitalization rate used in the income approach to discount the net income of a property to its present value. It reflects the market's typical return on investment for comparable properties and is determined by expert committees. A lower property interest rate generally leads to a higher income value.

What is the market adjustment factor in the cost approach?

The market adjustment factor (also known as the cost factor) in the cost approach serves to adjust the preliminary cost value (land value + building value) to reflect the current market conditions. It is derived by expert committees from the ratio of sales prices to asset values and takes into account supply and demand.

FAQ

What is the difference between market value and market price?

The market value (or market price) is the price that would be achieved at a specific time in the normal course of business, according to legal conditions and actual characteristics, without regard to unusual or personal circumstances (§ 194 BauGB). The actual purchase price paid may differ, influenced by individual negotiations or special circumstances.

What documents do I need for a property valuation?

A comprehensive property valuation requires, among other things, a current land registry extract, construction plans (floor plans, sections, elevations), a building description, the energy performance certificate, proof of modernization, and for investment properties, tenancy agreements and service charge statements.

How long is a property valuation valid?

A property valuation is always a snapshot as of the valuation date. Since market conditions can change, it is recommended to update a valuation after 6 to 12 months, especially if considering selling.

Can I appraise my property myself?

You can make an initial assessment yourself, for example, using online calculators or by comparing offers. However, for a precise and recognised evaluation, especially for official purposes (bank, court, tax office), it is advisable to consult a qualified expert to avoid misjudgments.

What role does the property interest rate play in the income approach?

The property interest rate is a capitalization rate used to discount the net income of a property to its present value within the income approach. It reflects the market-standard return rate of comparable properties and is determined by the expert committees. A low property interest rate generally leads to a higher income value.

What is the market adjustment factor in the cost approach?

The market adjustment factor (also known as the tangible asset factor) is used in the tangible asset method to adjust the preliminary tangible asset value (land value + building tangible asset value) to the current market situation. It is derived by expert committees from the ratio of purchase prices to tangible asset values and takes supply and demand into account.

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auctoa – Your partner for precise appraisals and certified reports. Property valuation and land valuation. With digital expertise, expert knowledge, artificial intelligence, personalised advice, and comprehensive market insights.

Made in Germany

BASED IN HAMBURG

GDPR-compliant

HOSTED IN EUROPE

auctoa – Your partner for precise appraisals and certified reports. Property valuation and land valuation. With digital expertise, expert knowledge, artificial intelligence, personalised advice, and comprehensive market insights.

Made in Germany

BASED IN HAMBURG

GDPR-compliant

HOSTED IN EUROPE

auctoa – Your partner for precise appraisals and certified reports. Property valuation and land valuation. With digital expertise, expert knowledge, artificial intelligence, personalised advice, and comprehensive market insights.

Made in Germany

BASED IN HAMBURG

GDPR-compliant

HOSTED IN EUROPE