Rent increase laws brandenburg, germany

Anyone letting commercial real estate in Brandenburg enjoys great freedom regarding rent adjustments-but also bears the risk of poorly negotiated value preservation. Unlike residential property, commercial tenancy law does not provide a statutory right to adjust the rent to the "local comparative rent" (ortsübliche Vergleichsmiete) or a "commercial rent index," unless this is precisely stipulated in the contract.

The Value Preservation Clause (Index Rent)

Since commercial lease agreements are often concluded over long periods (5, 10, or even 15 years), the landlord must protect against currency devaluation (inflation). The standard instrument for this is the value preservation clause (Wertsicherungsklausel), where the rent is linked to the Consumer Price Index (CPI) determined by the Federal Statistical Office.

For an index clause to be effective under the Price Clause Act (PrKG), certain conditions must be met:

1. Bilateral adjustment: The clause must be formulated so that the rent can adjust both upwards and downwards (in the event of deflation). Formulations like "The rent increases if the index rises" are invalid.
2. Contract term: Commercial lease agreements with index rent must generally be concluded for a minimum of 10 years, or the landlord must at least waive their right of termination for 10 years. Alternatively, shorter terms are sufficient if the tenant has an option to extend beyond the 10-year mark.

Important: An index adjustment often does not happen automatically ("genuine sliding clause" or echte Gleitklausel), but rather, according to contract conditions, must often be claimed from the tenant via a written declaration (known as a performance reservation clause or Leistungsvorbehaltsklausel).

The Stepped Rent (Staffelmiete)

An alternative to the automatic coupling to a price index is the stepped rent (Staffelmiete). In this case, the specific time at which the rent increases by what amount (in absolute euro amounts or clear percentages) is already specifically determined in the lease agreement upon conclusion.

• Advantage: High planning security for both parties. No calculation effort when the increase occurs.
• Disadvantage: If real inflation remains significantly above the contractually agreed steps (as in the years 2022/2023), the landlord loses purchasing power.

In contrast to residential tenancy law, there does not strictly have to be a one-year gap between the increase steps in commercial leases, even though this is customary in the industry.

Rent Adjustment Clauses (Gleitklauseln)

Occasionally, commercial lease agreements also contain clauses providing for an adjustment to changed market conditions. These stipulate that in the event of a significant change in the "customary market commercial rent," renegotiation must take place. Such clauses are often a source of legal disputes because the concept of market-customary rent is difficult to measure (there is no official commercial rent index for municipalities in Brandenburg). Often, expensive expert opinions are needed here to determine the new rent in a litigation-proof manner.

Turnover Rent (Umsatzmiete)

Especially in the retail sector (e.g., in shopping centers or prime locations in city centers like Potsdam), the turnover rent is frequently used. The rent consists of an (often lower) fixed base rent ("minimum rent") and a percentage share of the tenant's net sales.

This requires precise contractual definitions of how turnover is reported and certified by auditors.

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