{"id":13354,"date":"2026-04-06T18:57:12","date_gmt":"2026-04-06T18:57:12","guid":{"rendered":"https:\/\/www.mth-partner.de\/?p=13354"},"modified":"2026-04-06T19:02:25","modified_gmt":"2026-04-06T19:02:25","slug":"gewerbemietvertrag-typische-fehler-und-risiken-fuer-unternehmer","status":"publish","type":"post","link":"https:\/\/www.mth-partner.de\/en\/commercial-lease-agreement-typical-errors-and-risks-for-businesses\/","title":{"rendered":"Commercial lease agreement Typical mistakes and risks for entrepreneurs"},"content":{"rendered":"

Updated, taking the BEG IV into consideration (textual form instead of written form). As of: April 2026<\/span><\/i><\/p>\n

Lawyer Helmer Tieben<\/span><\/p>\n

Note: <\/b>This article is for general information only and does not replace individual legal advice. Commercial lease agreements are complex; every contractual situation is different. Please have your specific contract reviewed by a specialist lawyer before signing.<\/span><\/i><\/p>\n

240,000 euros. That's how much money is at stake if you sign a ten-year commercial lease with a monthly rent of 2,000 euros. At a rent of 3,000 euros, it is 360,000 euros. This is not an abstract scenario: it is the everyday life of restaurateurs, retailers, doctors, agencies and craft businesses in Germany.<\/span><\/p>\n

Nevertheless, many entrepreneurs sign the lease agreement presented to them by the landlord without having it checked. Or they just skim over it. This is understandable: the premises fit, time is pressing, the landlord has other interested parties. But it is a mistake that is difficult to rectify later.<\/span><\/p>\n

Because in commercial tenancy law, there prevails <\/span>Freedom of contract<\/b>. That sounds neutral. In practice, this means that the statutory tenant protection, which you may know from residential tenancy law, does not apply to commercial premises. No rent cap. No social Protection against dismissal<\/a>. No legal deadline for the utility cost statement. What's in the contract counts. What's missing, you will have to bear the cost of.<\/span><\/p>\n

This article will show you the ten most common mistakes in commercial lease agreements, the relevant legal bases, and the most important protective measures. It takes into account the regulations that have been in force since January 2025 <\/span>Text form obligation (BEG IV)<\/span><\/a>, whose transitional period for old contracts expired on 1 January 2026.<\/span><\/p>\n

<\/span>Commercial rent is not residential rent<\/b><\/span><\/h1>\n

The key difference in one sentence: In residential tenancy law, the legislator protects the tenant. In commercial tenancy law, only the contract provides protection.<\/span><\/p>\n

The legal basis is formed by \u00a7\u00a7 535 et seq. of the German Civil Code (BGB) in conjunction with \u00a7 578 BGB. The protective provisions of \u00a7\u00a7 549\u2013577a BGB do not generally apply to commercial lease agreements. The following overview highlights the differences:<\/span><\/p>\n\n\n\n\n\n\n\n\n\n
Subject<\/b><\/td>\nResidential rent<\/b><\/td>\nCommercial rent<\/b><\/td>\n<\/tr>\n
Protection against dismissal<\/span><\/td>\nComprehensive legal protection (\u00a7 573 BGB)<\/span><\/td>\nNone. Purely contractual arrangement.<\/span><\/td>\n<\/tr>\n
Rental price<\/span><\/td>\nRent cap, rent cap (\u00a7\u00a7 556d ff. BGB)<\/span><\/td>\nNo legal limit. Index rent, stepped rent, free agreement.<\/span><\/td>\n<\/tr>\n
Operating costs<\/span><\/td>\nCatalogue of the BetrKV, billing period 12 months<\/span><\/td>\nFreely negotiable. Administrative and maintenance costs are also transferable.<\/span><\/td>\n<\/tr>\n
Maintenance<\/span><\/td>\nLandlord obligation; only minor repairs transferable<\/span><\/td>\nLargely transferable to tenants (GTC: only with upper cost limit)<\/span><\/td>\n<\/tr>\n
Form (from 2025)<\/span><\/td>\nWritten form (\u00a7 550, \u00a7 126 BGB)<\/span><\/td>\nForm (\u00a7 578 para. 1 sentence 2, \u00a7 126b BGB)<\/span><\/td>\n<\/tr>\n
Freedom of contract<\/span><\/td>\nSeverely restricted by mandatory law<\/span><\/td>\nVirtually unlimited. What you do not negotiate is regulated by the landlord.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

The draft contract almost always comes from the landlord. It is designed so that the economic risk is transferred to you as the tenant as far as possible. This is legal. And that is precisely why you need to know what to look out for.<\/span><\/p>\n

<\/span>The ten most common mistakes in commercial leases<\/b><\/span><\/h1>\n

<\/span>Unclear operating costs regulation<\/b><\/span><\/h2>\n

In residential tenancy law, the Operating Costs Ordinance (BetrKV) provides an exhaustive catalogue of apportionable costs. This does not exist in commercial tenancy law. The landlord can contractually allocate almost any type of cost to the tenant as long as the agreement is transparent and specific.<\/span><\/p>\n

Many draft contracts take advantage of this. Blanket formulations such as \u201eoperating costs in accordance with Section 2 BetrKV and other operating costs\u201c leave open what \u201eother operating costs\u201c actually are. In practice, centre management costs, administration fees or maintenance levies for communal areas then appear that no one had anticipated.<\/span><\/p>\n

The Berlin Court of Appeal (judgement of 8 October 2001, Ref. 8 U 6267) and the Rostock Higher Regional Court (judgement of 10 April 2008, Ref. 3 U 158\/06) have declared clauses that merely list the term \u201eadministrative costs\u201c without a definition to be non-transparent and invalid.<\/span><\/p>\n

Protection<\/b> Insist on a final list of all reclaimable costs. Anything not explicitly stated in the contract cannot be billed to you.<\/span><\/p>\n

<\/span>2. Unlimited maintenance obligation<\/b><\/span><\/h2>\n

The Federal Court of Justice, in its ruling of 06.04.2005 (XII ZR 158\/01), drew a clear line: A standard form transfer <\/span>all<\/span><\/i> The transfer of maintenance and repair costs to the tenant without limiting the amount is invalid. It violates \u00a7 307 BGB.<\/span><\/p>\n

Nevertheless, such clauses are found in a variety of draft contracts. \u201eThe tenant assumes all maintenance and repair work on the rented property\u201c: This or similar is the wording. It sounds clear. But in this form, it is regularly invalid.<\/span><\/p>\n

The Higher Regional Court of Frankfurt (Judgment of 06.11.2020, File Ref. 2 U 47\/20) has tightened this stance: without ensuring that the tenant is not also held liable for damages from the period before the lease began, the clause is void. The case concerned a claim for damages amounting to almost \u20ac250,000. The court dismissed it.<\/span><\/p>\n

Effective maintenance clauses must fulfil three requirements: The obligation must be limited to damage that is attributable to the tenant's use of the property. There must be an upper cost limit per individual case and per year. And for communal areas, a cap of 8-10 % of the annual net cold rent is standard market practice.<\/span><\/p>\n

<\/span>3. Lack of protection against competition<\/b><\/span><\/h2>\n

Did you know that every commercial tenant has statutory protection against competition even without an express agreement? The landlord is not permitted to let premises to direct competitors on the same property or in the immediate vicinity (BGH, NJW 1979, 1404). This is called protection against competition inherent in the contract.<\/span><\/p>\n

Many landlords contractually exclude this protection. This is generally permissible. However, in its landmark ruling of 26 February 2020 (XII ZR 51\/19), the BGH set an important limit: If the protection against competition is excluded and at the same time there is an obligation to operate with a fixed product range, this combination is invalid as a general terms and conditions.<\/span><\/p>\n

The reasoning makes sense: The tenant cannot defend itself against new competition, is not allowed to adapt its product range and still has to maintain the business. This is a triple trap.<\/span><\/p>\n

What you should ask for:<\/b> An express non-competition clause. If the landlord rejects this, the operational obligation must at least be waived, or you must be able to adjust your product range.<\/span><\/p>\n

<\/span>4. uncontrolled index-linked rent<\/b><\/span><\/h2>\n

3.000 Euro Kaltmiete, Indexklausel ohne Deckelung, 8 % Inflation. Ergebnis: 240 Euro Mieterh\u00f6hung pro Monat, 2.880 Euro pro Jahr. Diese Erh\u00f6hung bleibt dauerhaft bestehen und bildet die Basis f\u00fcr alle weiteren Anpassungen. Die Inflationsspitzen von 2022 und 2023 haben vielen Gewerbemietern gezeigt, wie schnell eine Indexklausel zur existenziellen Belastung wird.<\/span><\/p>\n

An index-linked rent agreement ties the rent to the Consumer Price Index (CPI) published by the Federal Statistical Office. This is a fair instrument in normal times. Without a cap, it becomes a risk factor.<\/span><\/p>\n

Negotiation options:<\/b> A pro-rata adjustment (e.g. 70 %of the CPI increase) or an annual cap of 3\u20134 %. Both are common practice but are rarely offered by landlords. You need to ask for them.<\/span><\/p>\n

<\/span>5. Fixed runtime without exit<\/b><\/span><\/h2>\n

Five years, ten years, sometimes longer. Commercial rental agreements are concluded for the long term. This provides location security but also ties you down financially. A 10-year contract for \u20ac3,000 per month means: a total volume of \u20ac360,000 for which you are liable. Even if you have long since vacated the premises.<\/span><\/p>\n

You can find detailed information on notice periods and cancellation options in our article on the <\/span>Termination of commercial leases<\/span><\/a>.<\/span><\/p>\n

Three clauses can limit the risk: a break option (special right of termination) after 24 or 36 months. A contractually secured right to provide a subtenant under objective conditions. And a clear regulation on subletting.<\/span><\/p>\n

<\/span>6. Area deviation without tolerance limit<\/b><\/span><\/h2>\n

48,000 Euros. That's how much extra you'll pay over a 10-year term if your commercial space is 10 % smaller than stated in the contract and the monthly rent is 4,000 Euros. In commercial tenancy law, there is no statutory threshold like in residential tenancy law.<\/span><\/p>\n

Some contracts even expressly exclude rent adjustments for area deviations of up to 10 %. That is simply too much.<\/span><\/p>\n

Agree a maximum tolerance of 3 %. Have the area measured independently before the contract is concluded. Pay attention to which area measurement standard is used: DIN 277 or the MFG guideline from gif e.V. are the common standards.<\/span><\/p>\n

<\/span>7. The new text formatting trap<\/b><\/span><\/h2>\n

Since 1 January 2025, commercial tenancy agreements no longer have to be concluded in writing, but only in text form (Section 578 (1) sentence 2, Section 550, Section 126b BGB). A handwritten signature is no longer required. This is the biggest reform in commercial tenancy law for years.<\/span><\/p>\n

For old contracts (concluded before 01.01.2025), a transitional period applied until 31.12.2025. <\/span>This deadline has passed.<\/b> From 01.01.2026, the text form will also apply to existing contracts. The previously common \u201ewritten form termination\u201c as an exit strategy will therefore no longer work.<\/span><\/p>\n

However, the simplified form has a downside: If an email or WhatsApp message can constitute the conclusion of a contract, the risk of unintended contract changes increases. A quick message to the landlord (\u201eWe agree to the amended ancillary cost arrangement\u201c) can already be binding. Read more about the details of written and text form for commercial lease agreements in our <\/span>Contribution to written form in commercial lease law<\/span><\/a>.<\/span><\/p>\n

<\/span>8. Decommissioning and Conversion Costs<\/b><\/span><\/h2>\n

A caterer is extending his rented premises for 80,000 euros: Kitchen, ventilation system, catering area. At the end of the contract, the landlord demands that the premises be restored to their original state. Costs: another 40,000 euros. Without a clear contractual provision, this is the legal starting position (Section 546 BGB).<\/span><\/p>\n

Regulate <\/span>before<\/span><\/i> Start of tenancy: Which conversion work requires approval, who bears the approval risk? Is there an obligation to demolish, and if so, to what extent? Can the tenant take fixtures and fittings with them? Is there compensation for value-enhancing investments? An acceptance report at the start of the tenancy is essential.<\/span><\/p>\n

<\/span>9. Unilateral termination clauses<\/b><\/span><\/h2>\n

Under the statutory model (\u00a7 543 para. 2 no. 3 BGB), termination without notice is generally only possible when arrears amount to two months' rent. However, commercial lease agreements often stipulate deviating, stricter termination provisions. These are generally permissible but are subject to the control of general terms and conditions and may be invalid in individual cases.<\/span><\/p>\n

Conversely, the tenant also has termination rights that are often unknown. The BGH confirmed this in its judgement of 06.10.2021 (XII ZR 11\/20): If the landlord deliberately prepares incorrect utility bills and sticks to them despite justified objections, the tenant can terminate the lease without notice.<\/span><\/p>\n

Ensure that an immediate termination by the landlord is only permissible after a warning has been issued and has been unsuccessful. Check automatic renewal clauses and objection periods. You can find a detailed explanation in our article on <\/span>Cancellation in commercial tenancy law<\/span><\/a>.<\/span><\/p>\n

<\/span>10. Lack of Regulation on Subletting<\/b><\/span><\/h2>\n

Relocation, restructuring, merger: there are many reasons why a business owner might want to assign or sublet their lease. Without contractual provision, you need the landlord's consent. Clauses that permit or block an assignment \u201eat their sole discretion\u201c leave you incapable of action in a difficult situation.<\/span><\/p>\n

Agree objective approval criteria: Creditworthiness of the new tenant, industry compatibility, suitable utilisation concept. The landlord may then only refuse for objective reasons.<\/span><\/p>\n

<\/span>Already signed? What you can do now<\/b><\/span><\/h1>\n

Not everyone reads this article before signing. If you are already bound by a commercial lease agreement with unfavourable clauses, there are still options available:<\/span><\/p>\n