book value

Book value - The book value of a property is the value at which the building and land are reported on a company’s balance sheet. It is calculated based on the historical acquisition or construction costs, less accumulated depreciation and, if applicable, any write-downs. The book value often differs significantly from the current market value-especially for properties held for many years.

Determining the Book Value

The calculation follows the provisions of commercial law (Sections 253 et seq. of the German Commercial Code (HGB)):

• Land: Is recognized at acquisition cost and not depreciated, as land is not subject to wear and tear. An impairment loss is recognized only in the event of a permanent decline in value.
• Buildings: Are recorded at acquisition or construction cost and depreciated on a straight-line basis-under commercial law over the normal useful life (33-50 years), and under tax law at 2% or 3% annually.
• Subsequent construction costs: Value-enhancing measures (additions, extensions, significant improvements) increase the carrying amount; pure maintenance is recorded as an operating expense.

Distinction: Maintenance Expenses vs. Construction Costs

A critical issue for real estate owners preparing financial statements is the classification of renovation measures: Maintenance expenses (upkeep) are immediately recorded as expenses and reduce profit in the year they are incurred. Construction costs (improvements, expansions) increase the book value and are depreciated over the remaining useful life. This distinction is regulated in Section 255 of the German Commercial Code (HGB) and is frequently a point of contention during tax audits. Tax authorities carefully review large renovation projects to ensure they are classified correctly.

Book Value vs. Market Value

Book value is a historically based value, whereas market value is a value as of a specific date. For real estate acquired decades ago, the book value is often far below the current market value-this is referred to as a hidden reserve. Example: A multi-family home in Nuremberg purchased in 1990 for 500,000 euros has a book value of approximately 150,000 euros (land) after 35 years of depreciation-the market value may be 1,500,000 euros. The hidden reserve thus amounts to 1,350,000 euros.

Upon sale, the hidden reserve is realized and must be taxed - this must be taken into account when planning the sale.

Calculation Example: Book Value vs. Market Value

Property: Multi-family home in Nuremberg-Mögeldorf, purchased in 1995 for 450,000 euros (land 120,000 euros, building 330,000 euros).

Year	Building residual value (2% p.a.)	Land value (constant)	Total book value	Market value (approx.)
1995 (Purchase)	€330,000	€120,000	€450,000	-
2005 (after 10 years)	€264,000	€120,000	€384,000	approx. €500,000
2015 (after 20 years)	€198,000	€120,000	€318,000	approx. €900,000
2025 (after 30 years)	€132,000	€120,000	€252,000	approx. €1,400,000

Hidden reserve in 2025: approx. €1,148,000 - tax-relevant upon sale.

Practical Tip for Property Owners in Nuremberg and Franconia

We recommend that commercial property owners in the Nuremberg metropolitan region regularly compare the book value of their properties with the current market value. High hidden reserves can be presented as additional creditworthiness during loan negotiations-many banks take market value into account when assessing creditworthiness. Before a planned sale, the tax burden resulting from the realization of hidden reserves should be precisely calculated, and tax-optimized structures (reinvestment reserve under Section 6b of the German Income Tax Act, transfer to a replacement property) should be examined if necessary. In Nuremberg, price trends over the past 15 years have led to existing properties in sought-after neighborhoods such as Erlenstegen, Mögeldorf, or St. Johannis accumulating significant hidden reserves, which become tax-relevant in the context of a business transfer or succession planning.

Frequently Asked Questions

Why does the book value differ so significantly from the market value?

Because the book value is based on historical acquisition costs and is reduced annually by depreciation, while the market value reflects current demand and price trends. In regions experiencing appreciation-such as most major German cities over the past decades-a growing gap emerges between the two values. In Nuremberg, which has experienced significant price increases since 2010, these gaps are particularly pronounced-balance sheet values from the year 2000 no longer reflect today’s market conditions at all.

Do I have to report hidden reserves in my financial statements?

No, under German commercial law, the historical cost principle applies-real estate may not be revalued beyond amortized cost (revaluation is limited to the original acquisition cost). Under International Financial Reporting Standards (IFRS), investment property may be measured at fair value. Companies that apply IFRS-such as publicly traded real estate corporations-therefore report their real estate at current market value, which makes hidden reserves transparent.

What are the tax implications when selling a property carried on the balance sheet?

The difference between the sales proceeds and the balance sheet value (book value) is the capital gain, which is subject to income tax or corporate income tax. For corporations, the gain can be transferred to a replacement property through a reinvestment reserve (Section 6b of the German Income Tax Act (EStG)) if certain deadlines are met-this allows the tax burden to be deferred. We recommend discussing this planning option with a tax advisor at an early stage, as the deadlines for reinvestment are short and the requirements are strictly reviewed.

What is the significance of the book value in business succession and estate planning?

For family businesses and commercial real estate owners in the Nuremberg metropolitan region, the book value takes on particular relevance in succession planning. High hidden reserves-that is, the difference between the low book value and the current market value-can trigger significant tax liabilities during a business transfer or inheritance. If a sole proprietorship or a partnership with real estate assets is bequeathed or gifted, the hidden reserves are often realized and subject to income or estate tax. In the case of a GmbH or GmbH & Co. KG, real estate can be transferred to the next generation at book value, provided certain holding periods are observed-a significant advantage over direct ownership. In practice, we recommend that business owners with real estate assets in Nuremberg and the metropolitan region compare the book values of their properties with the current market value at least every three years and develop a tax-optimized succession strategy early on. In doing so, market value appraisals, real asset factors from the Nuremberg Appraisal Committee, and current tax planning options should be evaluated in consultation with a specialized tax advisor.

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