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Landlord’s Rent Increase Claim in Berlin-Moabit Largely Defeated

„It is not only tenants who seek to enforce their rights in court. Landlords, too, may attempt to pursue rent claims through legal proceedings. In one case we handled before the Berlin-Mitte Local Court, tenants had to defend themselves against a claim for a rent increase based on the Berlin rent index (Berliner Mietspiegel). The landlord sought to increase the net basic rent for a period apartment in Stephanstraße, Berlin-Moabit, and brought legal action to enforce that demand. In support of the claim, the landlord argued that the apartment and the building featured several characteristics said to justify a higher rental value. It soon became apparent, however, that a number of these allegations had not been substantiated with sufficient detail. The court made clear that, as a matter of principle, it is the landlord who bears the burden of presenting and proving any value-enhancing features relied upon. In this case, there was often no sufficiently specific submission in relation to the alleged features, including, for example, the claimed particularly high quality of the parquet flooring. At the same time, value-reducing aspects also had to be taken into account, such as the absence of a balcony. Following discussion of the facts and legal position, the court ultimately proposed a negotiated settlement. The parties agreed that the net basic rent would increase only very modestly, by a nearly negligible monthly amount. The costs order reflected that outcome: approximately four-fifths of the legal costs were borne by the claimant landlord. This case illustrates that rent increase claims based on the Berlin rent index do not succeed automatically. Landlords must set out, in detail, the features said to justify a higher rent and, where disputed, must also prove them. A careful legal review of the rent increase demand and a consistent defence can therefore be decisive in successfully resisting excessive rent increases.“

Rent Reduced by More Than One Quarter – Out-of-Court Settlement Following a Rent Cap Objection

„Not only tenants, but landlords as well may seek to enforce their claims through the courts. In proceedings handled by us before the Berlin-Mitte Local Court, tenants had to defend themselves against a landlord’s claim for a rent increase based on the Berlin rent index. The landlord sought an increase in the net basic rent for a period apartment on Stephanstraße in Berlin-Moabit and brought legal action to that effect. In support of the claim, the landlord relied on various alleged features of the apartment and building said to increase its rental value. It quickly became apparent, however, that several of these assertions had not been sufficiently substantiated. The court pointed out that, as a matter of principle, the landlord bears the burden of presenting and proving any value-enhancing features. Yet, in most instances, there was no concrete submission regarding the individual features alleged, such as the supposed particularly high quality of the parquet flooring. At the same time, value-reducing circumstances also had to be taken into account, including the absence of a balcony. After discussing the factual and legal situation, the court ultimately proposed a settlement. The parties agreed that the net basic rent would be increased only very moderately, by an almost negligible monthly amount. The decision on costs reflected that outcome: approximately four-fifths of the costs of the proceedings were borne by the claimant. This case illustrates that claims for rent increases based on the rent index do not automatically succeed. Landlords must set out in detail the features said to justify a higher rent and, in the event of a dispute, must also prove them. A careful legal review of the proposed rent increase and a consistent defence can therefore be decisive in successfully resisting excessive rent increases.“

Rent Cap Successfully Enforced: Rent Reduced from €1,190 to €647 – Case Study from Berlin-Moabit (Stephanstraße)

„The apartment is located on Stephanstraße in Berlin-Moabit and has a floor area of approximately 95 square metres. Under the Berlin rent index, the local comparative rent for comparable apartments was €6.33/m² at the median level. The rent actually charged was therefore significantly higher. The tenancy agreement, however, stated that the rent level was justified on the basis of the “comprehensive refurbishment” of the apartment. The landlord therefore relied on the exception to the rent cap for the first letting after extensive modernisation (section 556f of the German Civil Code). In our view, however, that exception only applies if the landlord expressly informed the tenant of this before the tenancy agreement was concluded. A general reference to “comprehensive refurbishment” is not sufficient for that purpose, because it does not make clear either that the works constituted modernisation in the legal sense or that this was intended to be the first letting following completion of those works. The Berlin-Mitte Local Court shared that assessment. In addition, the apartment was located in a social preservation area (Milieuschutzgebiet). In such areas, structural alterations that lead to a significant upgrading of the apartment generally require official permission. The proceedings therefore also raised the as yet largely unresolved question of whether features created in breach of building law may be taken into account at all as value-enhancing characteristics within the meaning of the Berlin rent index. In our view, allowing such consideration would amount to economically rewarding an unlawful condition. As no out-of-court settlement could be reached, legal action was brought seeking repayment of overpaid rent and a declaration as to the legally permissible rent. In the court proceedings, the parties ultimately agreed on a settlement. The monthly net basic rent was reduced to €647. In addition to the rent reduction, repayment was also sought for the rent overpaid since the formal objection had been raised. At the time of settlement, that amount exceeded €5,800. In a case handled by our firm in Berlin-Moabit, a substantial excessive rent was successfully eliminated. Under the Berlin rent index, the local comparative rent for the 95 m² period apartment was €6.33/m² at the median level. The rent actually charged was more than twice that amount. The tenancy agreement nevertheless expressly stated that the rent was justified by the apartment’s extensive comprehensive refurbishment. In fact, extensive construction works had been carried out in the apartment before the tenancy began. The landlord relied on a frequently invoked exception to the rent cap: the first letting after extensive modernisation (section 556f of the German Civil Code). That exception is only effective, however, if the landlord expressly provides this information before the tenancy agreement is concluded. The Berlin-Mitte Local Court agreed with our view that the general reference to “comprehensive refurbishment” was legally insufficient in itself to rely on that exception. It neither makes clear that this is a first letting, nor that the works constitute modernisation in the legal sense. Measures only qualify as modernisation if they are capable of permanently increasing the usability of the rental property or of noticeably and sustainably improving the general living conditions. Mere cosmetic upgrading or a subjectively perceived improvement is not enough. Quantitatively, the investment must amount to at least one third of the expenditure required for a comparable new-build apartment; qualitatively, a condition comparable to a new build must be created. In addition, repair costs and maintenance measures must be deducted. A precise comparison of the apartment’s condition before and after the works is therefore required, together with a detailed breakdown of all construction measures by trade and a plausible deduction of maintenance costs. It is not sufficient merely to rely in general terms on a high overall level of expenditure. Rather, the portion attributable specifically to modernisation in the narrower legal sense must be broken down in a way that is arithmetically transparent. That was lacking in the present case. No concrete information had been provided as to the nature and extent of the measures carried out, in particular as regards distinguishing them from maintenance works carried out at the same time and from saved hypothetical maintenance expenditure, which operated to the landlord’s detriment. The landlord did submit various tradesmen’s invoices. However, upon review, many of the stated costs related not to modernisation, but merely to repairs, clearance works, disposal, and simple renovation works. That is not sufficient to establish extensive modernisation within the meaning of the law. A further factor was that the apartment—like many in Berlin—was located in a social preservation area (Milieuschutzgebiet). In such an area, public building law is specifically intended to limit value-enhancing alterations in order to prevent displacement and preserve the existing social composition of the neighbourhood. In these areas, the creation of value-enhancing features, insofar as they constitute structural alterations, is generally not capable of being approved; in particular, value-enhancing features within the meaning of the Berlin rent index indicate an above-average standard of fittings and are generally not capable of approval. The construction measures were therefore in breach of building law. Under section 213(1) no. 4 of the German Building Code, anyone who alters a structure within the scope of a preservation statute (section 172(1) sentence 1 of the German Building Code) without the required permission commits an administrative offence. In legal terms, the alteration of a structure includes in particular changes to the floor plan, building-law-relevant changes to fittings, and other alterations affecting the use, layout, or standard of the structure. Under subsection (3), such an administrative offence may be punished by a fine of up to €30,000. Accordingly, the permissible rent had to be determined on the basis of the Berlin rent index. A particular issue in dispute was whether the bathroom and its fittings, created without the preservation-law permission required and therefore unlawfully under building law, could nevertheless be taken into account as value-enhancing features within the meaning of the so-called guidance for range classification under the Berlin rent index. To date, this question has not yet been clarified by the courts. While the opposing side argued that only the actual fittings were relevant … As no settlement could be reached, legal proceedings were commenced.“

Berlin-Friedrichshain: Significant Rent Reduction Achieved Through an Out-of-Court Settlement

„In another matter handled by our firm involving the enforcement of Berlin’s rent control rules, a substantial excessive rent was successfully corrected in Berlin-Friedrichshain. The apartment concerned, a period property in the Samariterviertel on Schreinerstraße, was newly let in September 2025 at a monthly net basic rent of €1,220. Under the Berlin rent index, however, the legally permissible rent for an apartment with a floor area of 73.45 square metres was significantly lower. Shortly after the tenancy began, the tenants had the rent reviewed by legal counsel and formally objected on the grounds that it exceeded the limits imposed by the rent control rules. The landlord, who was himself a lawyer, initially argued that the tenants’ claims amounted to an abuse of rights because they had already been aware of the rent level when entering into the tenancy agreement. That argument, however, does not succeed as a matter of law. The rent control provisions under sections 556d et seq. of the German Civil Code are mandatory law. The only decisive question is whether the agreed rent exceeds the statutory maximum and whether any legal exception applies. As no agreement could initially be reached out of court, proceedings were commenced before the Kreuzberg Local Court. During the course of the litigation, however, the parties ultimately entered into constructive settlement discussions. As a result, the parties agreed on an amendment to the tenancy agreement providing that the monthly net basic rent had been €825 from the very beginning of the tenancy. Compared with the rent originally agreed, this amounted to a substantial and lasting rent reduction. In addition, the landlord undertook to pay compensation for rent overpaid and to bear the majority of the legal enforcement costs incurred. This case illustrates that it can be worthwhile to review the rent even in newly concluded tenancy agreements. Particularly in highly sought-after areas of Berlin, rents are not infrequently agreed at levels well above the statutory limits. Berlin’s rent control rules are therefore an effective instrument for correcting excessive rents and achieving an appropriate resolution between the parties.“