Tenants in Germany: Smartlocks, Deadlines & Logs

Privacy & Landlord Entry Rights 2 min read · published September 07, 2025

As a tenant in Germany you may wonder how smartlocks or transponders regulate access and which deadlines your landlord must respect. This guide explains rights and obligations clearly, how to log access requests, which data protection rules apply and which official forms or courts you can use. You get practical steps, letter templates and guidance on when rent reduction or a complaint at the local court is appropriate. The information refers to applicable laws such as the BGB and procedures under the ZPO and to official authorities so you as a tenant can make safe decisions. Read on to understand concrete measures and deadlines. Start now with the first steps.

Always note the date and reason for each access.

What are smartlocks and transponders?

Smartlocks and transponders are electronic access systems that open doors without a traditional key. For tenants in Germany this means: technically they ease access control but can also generate logs about entries. Check whether your lease or a separate agreement regulates installation, use and logging.

Landlord rights and deadlines

  • The landlord may generally request access only with prior notice and a stated purpose (notice), except in emergencies.
  • Deadlines and appointments must be observed: a reasonable notice (within 24–48 hours) is customary and must be practicable.
  • Logging of entries (record) is permitted if it is proportionate and data protection is observed.
Respond to official letters within deadlines to protect your rights.

Privacy and logging

Access data are personal data; their storage must comply with data protection and be limited to what is necessary. As a tenant you can request information about stored logs and, if appropriate, demand deletion of unnecessary data[1]. In disputes about access or logging the local court is responsible; court procedures follow the ZPO[2].

FAQ

Can the landlord install a smartlock without my consent?
In principle, the landlord usually needs your consent for structural changes if the change affects your use of the rented property. Check contract clauses and first speak to the landlord in writing.[1]
How much notice must the landlord give?
There is no general statutory minute-by-minute deadline, but a reasonable lead time (typically 24–48 hours) is customary; there are exceptions in urgent cases.
Can I challenge access logs?
Yes, you can request information and object to unlawful storage or processing by the landlord; if necessary, you can consider legal action and contact the local court.[2]

How-To

  1. Note date and time immediately for each access attempt and store this information properly.
  2. Secure evidence: photos, log extracts or messages from the landlord and create a chronological file.
  3. Write to the landlord briefly and factually with a deadline and request information or cessation (notice).
  4. If discussions do not help, consider a complaint at the local court or legal action (court) with the collected evidence.

Key Takeaways

  • Documentation helps: keep logs, messages and photos safe (note).
  • Respect data protection: ask what data are stored and retention periods (note).
  • Observe deadlines: respond promptly to letters and appointments (note).

Help and Support


  1. [1] Gesetze im Internet – BGB §535 ff.
  2. [2] Gesetze im Internet – ZPO
  3. [3] Bundesgerichtshof – information and decisions
Bob Jones
Bob Jones

Editor & Researcher, Tenant Rights Germany

Bob writes and reviews tenant law content for various regions. They’re passionate about housing justice and simplifying legal protections for tenants everywhere.