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Illustration of a move with a DSL router and an internet contract, with special termination rights in the event of a change of residence.
Internet contract when moving: When does the special termination right apply?

Status: November 2026 · Attorney Helmer Tieben, Cologne In short:

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The woman holds an ear to the closed window of her apartment while cars and a truck drive by outside.
Rent reduction due to traffic noise: requirements and judgments

Status: November 2026 · Attorney Helmer Tieben, Cologne In short:

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The property manager examines documents alongside a model of a multi-family building, keys and a scale as symbols of legal responsibility.
WEG administrator: When is he liable for exceeding his authority?

In short: Without a decision, the administrator may only make minor or

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House slippers with the material designation ‚100% wool‘, magnifying glass and material samples
Competition law: Misleading advertising due to inaccurate material information

Status: November 2026 · Attorney Helmer Tieben, Cologne In short:

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Biogas plant with green fermentation tanks near a residential house in rural area
Odour nuisance caused by biogas plants: What can neighbours do?

Status: November 2026 · Attorney Helmer Tieben, Cologne In short:

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Renewable energies
Renewable Energy: International tax treatment of cross-border organised community wind funds
Many Questions regarding international tax issues arise when community wind
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Illustration of advice regarding a termination letter and messages on a smartphone.
Termination due to NS comparison: When does it take effect?
Dismissal for behavioural reasons is a dismissal that the employer
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Written form in commercial tenancy law: What applies since BEG IV
Written form in commercial lease law: what applies since BEG IV?
One of the most important standards in commercial tenancy law is § 550 BGB, which
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Civil law
Practical case of tenancy law: inheritance division, § 566 BGB ("purchase does not break rent") and the limits of personal use cancellation
A father lets out, the children inherit - and there are
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Civil law
Pretended personal use: Tenant receives compensation - judgement of the Cologne District Court
A tenant had to move out of her flat - allegedly because of
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