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How are special clauses in a lease assessed?

lease agreement special clauses written alongside standard terms are among the most common sources of disputes between tenants and property owners. In general, these provisions may be taken into account if they were accepted freely by both sides and do not lead to an outcome that conflicts with the law.

However, not every additional clause is automatically considered valid. In particular, contract terms that contain vague language, place a heavy burden on only one party, or produce controversial results in terms of tenant rights may be reassessed depending on the specific circumstances of the case.

Which special clauses cause the most debate?

In practice, the most frequently disputed areas are eviction, maintenance and repairs, security deposits, shared building expenses, limits on use and penalties for late payment. Provisions written on these topics are expected to be clear, understandable and balanced in terms of mutual obligations.

Key criteria for validity

  • The clause must be written clearly and leave no room for interpretation
  • It must be clear that both parties actually read and accepted the provision
  • It should not create a serious imbalance between the landlord and the tenant
  • It must not conflict with legislation, mandatory rules or general legal principles

For example, provisions that effectively eliminate the tenant’s basic right of use, impose unreasonable extra costs or create unilateral penalty consequences are examined more carefully. Likewise, any clauses added later in handwriting must also have been clearly accepted by both parties.

Why are vague expressions risky?

Ambiguous phrases such as "if deemed necessary," "at the landlord’s request" or "other expenses deemed appropriate" can lead to interpretation disputes later on. The more concrete and measurable the contract terms are, the clearer the parties’ path to enforcing their rights will be.

What should tenants and landlords check before signing?

A lease is not just about the rent amount; the handover terms, common expenses, inventory of fixtures and appliances, intended use and termination process also matter. It is helpful for both sides to fill in any blank spaces so they cannot be completed later, review every page and read the special clauses one by one.

Practical checklist

  • Is the obligation created by the added clause clear?
  • Are cost and responsibility allocations written explicitly?
  • Are the delivered items and their condition recorded?
  • In the event of a dispute, is it clear which provision will apply?

If a dispute arises, the assessment is often made by considering the contract as a whole, the way it was drafted and the conduct of the parties together. For that reason, getting expert advice before signing important special clauses can be a protective step for both the tenant and the landlord.

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