Navigate safely through the legal frameworks in the appraisal process of your property

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Legal advice on property valuation in Germany.

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(ex: Photo by

Legal advice on property valuation in Germany.

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(ex: Photo by

Legal advice on property valuation in Germany.

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Navigate safely through the legal frameworks in the appraisal process of your property

Navigate safely through the legal frameworks in the appraisal process of your property

Navigate safely through the legal frameworks in the appraisal process of your property

2 Apr 2025

11

Minutes

Federico De Ponte

Expert in Real Estate Valuation at Auctoa

2 Apr 2025

11

Minutes

Federico De Ponte

Expert in Real Estate Valuation at Auctoa

Do you know the exact legal requirements that determine the value of your property? A solid understanding of the legal framework in the valuation process is crucial for financial security and optimal results. This article guides you through the key laws and regulations and shows you how to use them to your advantage.

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The topic briefly and concisely

The Building Code (BauGB) and the Real Estate Valuation Ordinance (ImmoWertV) are the central legal foundations for real estate valuation in Germany.

The ImmoWertV prescribes three standardized valuation methods: the comparative value, income value, and cost value methods, whose correct application is crucial for an accurate assessment.

The amendment of the ImmoWertV (effective since 2022) aims for greater bindingness and transparency in the valuation process, among other things, through the principle of model conformity.

Are you facing the challenge of determining the value of a property in the context of an inheritance, sale, or investment? The complexity of legal regulations can quickly become overwhelming. However, without a clear understanding of the legal framework in the valuation process, you risk making poor decisions that can have potentially significant financial disadvantages. This article provides you with a comprehensive overview of the relevant laws, such as the Federal Building Code (BauGB) and the Property Valuation Ordinance (ImmoWertV). You will learn how these regulations influence valuation methods and how, through well-founded knowledge, you can secure the true value of your property and avoid pitfalls. A precise, AI-assisted evaluation from Auctoa can offer you additional security in this regard.

Understanding the Foundation: BauGB and ImmoWertV as Guides

The evaluation of real estate in Germany is not an arbitrary act but follows clear legal guidelines. Central to this are the Federal Building Code (BauGB) and the Real Estate Valuation Ordinance (ImmoWertV). The BauGB, especially § 194, defines the fundamental concept of market value (Verkehrswert). This is the price that could be achieved in normal business transactions at a specific time. The ImmoWertV specifies these guidelines in detail and regulates the valuation methods to be applied and the necessary data for them. Since its revision, which came fully into force on 1 January 2022, the ImmoWertV aims for even higher binding force and transparency. For example, previous guidelines on individual procedural parts have now become binding regulations. For a solid building law assessment, knowledge of these fundamentals is essential. Compliance with these legal frameworks in the valuation process protects all parties involved from misjudgements and ensures the transparency of valuations. This is particularly important as valuations often serve as a basis for financial decisions with ramifications involving several hundred thousand euros.

The three pillars of valuation: Methods according to ImmoWertV

The ImmoWertV prescribes three standardised methods for determining the market value, which are applied depending on the type of property and data availability. These methods ensure a standardised and comprehensible valuation. Choosing the right method is a crucial step in the valuation process.

The Comparative Value Method: What the market really pays

The comparative value method (§ 15 ImmoWertV) determines the value by comparing it with actual purchase prices of similar properties. It is particularly suitable for owner-occupied houses and condominiums, provided there are sufficient comparison data, often at least 3 to 5 properties. The quality of the comparison data is crucial for an accurate result here. The appraisal committees play an important role by maintaining collections of purchase prices (§ 195 BauGB) and deriving comparison factors. This method directly reflects the current market situation. Careful analysis of land registry regulations can provide additional value-relevant information.

The Income Value Method: What the property generates

For investment properties like rented residential buildings or commercial properties, the income value method (§ 17 ImmoWertV) is decisive. It focuses on the sustainably achievable future earnings (rents). Key factors are the net yield, operating costs, and the property interest rate, which reflects the local interest rate for comparable properties and is often between 3% and 7%. The remaining useful life of the building, which can be up to 80 years for residential buildings, is also an important parameter. A precise forecast of earnings and costs is key here.

The Cost Value Method: What new construction would cost

The cost value method (§ 22 ImmoWertV) is often used for owner-occupied properties for which there are insufficient comparison or yield data, such as special industrial facilities or unique single-family houses. It determines the value from the construction costs of a comparable new building, minus the reduction in value due to age, plus the land value. The standard construction costs (NHK 2010, which are to be revised by the end of 2024) and the construction price index are important calculation bases. The market adjustment factor, which takes the current market situation into account, is of great importance in deriving a realistic market value. The legal framework conditions in the valuation process require careful data collection here.

The Role of the Expert: Ensuring Quality and Responsibility

A qualified expert is essential to correctly apply the complex legal frameworks in the appraisal process. The ImmoWertV sets high demands on the qualification and objectivity of assessors. Publicly appointed and sworn experts or appraisers certified according to DIN EN ISO/IEC 17024 ensure the preparation of well-founded and legally sound market value appraisals through their expertise and independence. An appraisal often encompasses more than 20 pages and serves as an important basis for decision-making. Faulty appraisals can lead to significant financial consequences, so selecting a competent expert who understands the appraisals in case law is crucial. The cost of such an appraisal can range in the four-figure area, depending on complexity.

The following aspects characterise a qualified expert:

  • Proven expertise and regular further training, often more than 20 hours per year.

  • Independence and objectivity without financial self-interests in the valuation object.

  • Knowledge of current case law and local market data.

  • Transparent and comprehensible presentation of the valuation in the report.

  • Liability insurance in the event of valuation errors, often with coverage sums over 1 million euros.

Engaging such an expert minimises risks and builds trust in the determined value.

Keep an eye on specific aspects and current developments

In addition to general procedures, there are specific aspects that are relevant in the assessment process. These include the evaluation of rights and encumbrances (e.g. rights of way, residential rights), which can significantly affect a property's value—often by 5-15%. Energetic properties and sustainability aspects are also gaining importance and can increase or decrease the value by up to 20%. The amendment of the ImmoWertV 2021 introduced the principle of model conformity (§ 10 ImmoWertV 2021). This means that experts must consider the models and data used by the appraisal committees in their assessments, aiming for greater uniformity. The land reference values, published by the appraisal committees at least every two years in accordance with § 196 BauGB, form another important data basis. In complex cases, such as the valuation of commercial properties, a detailed knowledge of the legal aspects of commercial property purchase is necessary. For a quick initial assessment or complex questions, the Auctoa ImmoGPT-chat can be a valuable aid in better understanding the legal framework in the assessment process.

Important points in specific evaluations are:

  1. Heritable building rights: Here, the value of the right and the property are considered separately, often leading to complex calculations.

  2. Listed buildings: Regulations can reduce the value, but tax benefits can also increase it; a precise analysis is needed here.

  3. Contamination: Soil contamination can cause remediation costs of several tens of thousands of euros, significantly depressing the value.

  4. Development status of the land: Land intended for development has a different value than raw land or serviced land, the differences can exceed 50%.

These factors require particularly careful examination within the framework of legal regulations.

Avoiding Pitfalls: Common Mistakes and Their Consequences

Failure to adhere to the legal framework in the evaluation process can lead to serious errors. A common mistake is the inadequate consideration of encumbrances and restrictions in the land register. This can reduce the value by up to 25%. Using outdated market data or applying valuation methods improperly also leads to inaccurate results. For example, a misjudgment of the remaining useful life by just 5 years can alter the income value by 10-15%. Such errors can result in financial losses for buyers or sellers or lead to lengthy and costly disputes in inheritance settlements. Therefore, a thorough review of all contract terms and notarial certification is just as important as the correct valuation. To minimize such risks, a professional, data-driven valuation, as offered by Auctoa, is essential. This provides you with a neutral assessment based on current data and the applicable legal requirements.

Your Benefits from Complying with Legal Requirements

The consistent adherence to the legal framework in the valuation process offers you numerous advantages. It creates a solid foundation for negotiations and prevents future challenges or legal disputes, which can often incur costs of over 10,000 euros. A legally impeccable valuation ensures transparency and trust among all parties involved. This is invaluable, especially in cases of inheritance or divorce, where often amounts in the five- to six-figure range are to be divided. For investors, a correct valuation provides a reliable basis for their investment decisions and risk minimisation. Banks generally also require appraisals that comply with legal requirements for financing; often, lending values are set up to 80% of the market value. Ultimately, this secures the fair value of your property and protects your assets. Knowledge of the regulations in property tax law can also be advantageous here.

rechtliche-rahmenbedingungen-im-bewertungsprozess

The legal framework conditions in the valuation process, particularly the BauGB and the ImmoWertV, are complex but crucial for a correct and fair property valuation. They define the procedures and set requirements for the data and the qualifications of the appraisers. A thorough knowledge of these regulations protects you from financial disadvantages and legal disputes. Investing in a professional valuation pays off through security and transparency. Do not rely on estimates, but on well-founded facts. Use the expertise of Auctoa and our ImmoGPT-Chat to gain clarity in the jungle of regulations and determine the true value of your property. This way, you make informed decisions and secure your assets in the long term.

FAQ

What are the key legal frameworks in the evaluation process?

The key legal frameworks are the Federal Building Code (BauGB), which defines the market value, and the Property Valuation Ordinance (ImmoWertV), which prescribes the specific valuation methods and data foundations.

What role does an expert play in property valuation?

A qualified expert correctly applies the legal requirements, selects the appropriate evaluation method, and determines an objective market value based on sound data and their expertise. Their independence is crucial in this process.

How does the ImmoWertV affect the valuation of my property?

The ImmoWertV ensures that your property is assessed using standardised and recognised methods. It specifies which data (e.g. land reference values, comparable prices) should be used to determine a comprehensible and market-appropriate value.

Can I appraise my property myself?

An initial assessment is possible, but for binding purposes (e.g. sale, inheritance, financing), an appraisal by a qualified expert, which takes into account the legal framework conditions in the valuation process, is usually indispensable to avoid financial risks.

What is the cost of a professional property appraisal?

The costs for a market value appraisal according to ImmoWertV depend on the type and complexity of the property. They are often based on the value of the property or agreed upon as a fixed fee and can be in the four-digit range. An Auctoa AI assessment offers a quick and cost-effective alternative for an initial orientation.

Where can I find the legal basis for property valuation?

The Building Code (BauGB) and the Ordinance on the Determination of Property Values (ImmoWertV) can be accessed online through the Federal Ministry of Justice (gesetze-im-internet.de). The Federal Ministry for Housing, Urban Development and Building (BMWSB) also provides information.

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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