Tenant documents for lost keys & deposit Austria

Deposit & blocked account 2 min read · published September 10, 2025

What to do for lost keys and deposit?

As a tenant in Austria, stay calm and collect evidence systematically. Inform the landlord in writing, document the condition of the flat and keep invoices for replacement keys or lock changes. Note the date and time of the loss and record any conversations with the landlord or tradespeople.

  • Tenancy agreement and move-in protocol
  • Notes about the lost key and the lock location
  • Photos of the lock and any damage
  • Invoices for replacement keys or lock changes
  • Correspondence with the landlord by email or letter
  • Proof of the deposit account
Keep digital copies of all receipts with dates and clear filenames.

Evidence and deadlines

For claims against the landlord, timely photos, original invoices and written notifications count. Report the loss as soon as possible and keep delivery receipts or sent emails as proof.

  • Notify the landlord in writing within a few days
  • Secure photos and date information
  • Collect estimates and keep invoices
  • File correspondence in an orderly manner
Respond promptly to official or court communications.

FAQ

Which documents do I need after losing a key?
You need the tenancy agreement, move-in protocol, photos, invoices for replacement keys or lock changes, and correspondence with the landlord.[1]
Can the landlord withhold the deposit because of lost keys?
The landlord may only deduct legitimate costs for replacement or lock changes from the deposit if they can prove the damage; wrongful withholding can be contested.[1]
What can I do if the landlord does not return the deposit?
You can file a claim at the competent district court or send a payment demand; check all documents and deadlines first.[2]

How-To

  1. Collect photos and receipts and organize them chronologically
  2. Inform the landlord in writing and document receipt
  3. Obtain cost estimates and secure invoices
  4. If disputed, review documents and consider legal steps at the district court

Key Takeaways

  • Gather all receipts and photos immediately.
  • Notify the landlord in writing about the loss.
  • Keep deposit and account statements safe.

Help and Support / Resources


  1. [1] RIS - Mietrechtsgesetz (MRG)
  2. [2] Justice - District 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.