Commercial Lease Agreements in Lower Saxony: Written Form & Clause

The drafting of a commercial lease agreement in Lower Saxony is more akin to legal corporate acquisitions than a simple apartment rental. Since the protective mechanisms of residential tenancy law are missing, the contract text is the sole foundation for yields, maintenance obligations, and risk distributions.

Disclaimer: This guide provides preliminary information for commercial real estate players and does not replace an individual legal case review. Especially because of terms and conditions controls, contracts should always be drafted by specialist lawyers in Lower Saxony. Information last verified: March 2026.

1. The Highest Risk: The Written Form Requirement (§ 550 BGB)

Probably the most explosive legal issue for commercial landlords in all of Germany is the strict form law for long-term contracts:

• A fixed-term commercial lease agreement (e.g., for 5 or 10 years) is only effective if it completely fulfills the written form.
• This means: All essential agreements (parties, rental object, exact rent, duration, sketches of secondary rooms or parking spaces) must be signed by hand in original by all authorized representatives in a uniform, inseparable document or one that unambiguously refers to one another.
• Even the smallest subsequent email arrangements (like "We will temporarily lower the rent for the basement room by 50 euros") constitute a formal defect ("Schriftformmangel") of the entire limitation period.

The Consequence of a Formal Defect

If the written form is broken, the 10-year contract legally counts as "concluded for an indefinite period" and can then be ordinarily terminated at any time by either side with a 6-month notice period. For investors and owners whose building value (multiplier) is largely built on secure 10-year streams, a premature tenant move-out often means catastrophic consequences in the object calculation or refinancing.

2. Standard Terms and Conditions (AGB) Control of "Standard Clauses"

Although freedom of contract applies in commercial leasing, a large proportion of managers use form lease agreements (templates), which in the event of repeated use (more than 2-3 times) are legally classified as General Terms and Conditions (AGB). This leads to clauses that unreasonably disadvantage the tenant being invalid (§ 307 BGB). Example: An AGB clause that forces the commercial tenant to completely repair "roof and structure" without an absolute upper cost limit is almost universally considered invalid by German courts (including the Higher Regional Court of Celle or Braunschweig).

3. Formulating Option Rights Correctly

A typical limitation period in commercial real estate in Lower Saxony reads "5 years fixed term, plus 2 × 5 years option right for the tenant."

• The Option: The tenant is granted the unilateral right to continue the tenancy. This right must (unless otherwise stipulated in the contract) be exercised in writing no later than three, sometimes six months before expiration of the limitation period ("Optionsziehung").
• If the tenant misses this deadline even by one day, the option right expires irrevocably, and the landlord has the right to negotiate a much more lucrative follow-up contract (with the same or another tenant).

4. Use and Protection Against Competition

The actual contract must imperatively and precisely narrow down the permitted type of use ("Approved Purpose of Use") for the commercial property:

• "Operation of a retail shop for fashion and shoes", instead of "Commercial purposes". Without a narrow definition, the fashion retailer could theoretically sublet his shop tomorrow to an amusement arcade operator or a betting shop, which would cause problems in almost every Lower Saxony building permit. In addition, the tacitly existing contract-inherent protection against competition should be contractually restricted ("Only applies to the main assortment offered on 50% of the sales area") or completely waived.

Contract Management in Commercial with Landager

Create written form addenda legally securely and never overlook another option deadline: Landager was developed to master the gigantic organizational pitfalls in commercial tenancy law in Lower Saxony digitally. Link digital signatures in such a way that no formal defects escape and let the system send reminders before expiring options.

Back to the Lower Saxony Commercial Tenancy Law Overview.