Lost Keys & Deposit: Tenant Rights in Austria

Deposit & blocked account 2 min read · published September 10, 2025
If you, as a tenant in Austria, lose a key or there are disagreements when returning your deposit, the situation can quickly become stressful. This article explains in clear steps which rights and obligations tenants have, how to secure evidence, which deadlines apply and when filing an objection or complaint makes sense. We show how factual communication with the landlord can look, which documents are helpful and which authorities or courts you can contact. The goal is to give you practical steps so you can limit damage, avoid unnecessary deductions and improve your chances in a dispute.

What to do after losing a key?

First: stay calm and act in a structured way. Document the location and time of the loss and check whether a spare key exists or a locksmith is needed. Inform the landlord in writing and request confirmation of receipt.

  • Report the lost key to the landlord immediately and document the time.
  • Secure photos, receipts and witness notes in case costs or damages are claimed.
  • Log contact attempts (emails, calls) and record deadlines in writing.
  • Note deadlines for objections or claims and respond in time.
Keep all receipts and every communication organized and safe.

Regarding the deposit: deductions must be traceable and reasonable; blanket or unproven demands should be contested in writing. Review the settlement carefully and request a detailed breakdown of costs.[1]

Respond within any deadlines the landlord sets, otherwise enforcing claims can become more difficult.

Frequently Asked Questions

Who pays for changing the lock if a key is lost?
Typically the tenant bears the costs if the loss is attributable to them; the claim must, however, be reasonable and documented.
How do I object to deposit deductions?
Send a formal, reasoned objection to the landlord, collect evidence and be prepared to have the matter decided in court if necessary.[2]
Do I need a lawyer for small deposit disputes?
Not always; many cases can be resolved with good documentation and a clear written objection. For larger amounts or complex issues, legal advice may be useful.

How-To

  1. Notify the landlord immediately in writing and obtain confirmation of receipt.
  2. Collect all evidence: photos, witnesses, receipts and timestamps.
  3. Draft a formal objection: state the facts, reject the claim, set a deadline for response.
  4. If no agreement, consider filing a claim at the competent district court or seek mediation.[2]
  5. Prepare for the hearing: bring original documents and copies.
Early, factual communication often reduces time and costs.

Key Takeaways

  • Deposits may only be kept for proven and reasonable damages.
  • For lost keys: report immediately, document and keep cost receipts.
  • Meet deadlines; missed responses weaken your position.

Help and Support / Resources


  1. [1] RIS – Mietrechtsgesetz (MRG)
  2. [2] Justice – information about courts
Bob Jones
Bob Jones

Editor & Researcher, Tenant Rights Austria

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