Tenant Guide: Leaks & Mold in Austria

Maintenance & repair duties (MRG §3) 2 min read · published September 10, 2025

As a tenant in Austria, a leak or mold infestation can quickly become a burden. This guide explains in clear language which immediate steps you should take, how to document damage and what rights and obligations tenants and landlords have. I describe how and when to inform the landlord, which deadlines must be met and how to act in case of dangerous mold or acute water damage. You will also learn which evidence is important, when the district court may be involved and which official forms are available. The aim is to give you practical steps so you can secure your living quality and avoid legal disadvantages. If possible, seek legal advice or tenant counseling early.

What to do for leaks and mold

In case of acute water damage or visible mold, tenants should act quickly. First secure people and belongings, then stop the source - if possible - (e.g. the main water valve). Report the damage immediately to the landlord in writing with date, time and description as well as photos.[1]

  • (within) Inform the landlord immediately by phone and additionally by email or letter.
  • (evidence) Take photos, videos and keep a dated log.
  • (repair) Request a proper repair and ensure mold is professionally removed.
  • (form) If necessary, send a formal defect notice and set a reasonable deadline.
Keep photos and dates of every damage incident.

If the landlord does not respond, tenants can assert rights; in many cases the Mietrechtsgesetz (MRG) is relevant and governs maintenance and repair obligations.[1] In case of uncertainty, it helps to check local tenant counseling or legal information on official sites.[2]

Rights and obligations

The landlord is normally obliged to keep the apartment in a usable condition and repair damage. Tenants have the right to request timely repair and to document damage. Reduced rent payments or compensation may be possible if the landlord breaches duties.

Frequently Asked Questions

Who pays for repairs in case of a pipe leak?
Generally the landlord bears the costs if the leak was not caused by the tenant; exact rules are set out in the MRG.
Can I reduce the rent for mold?
Yes, a rent reduction is possible if living quality is affected; extent and requirements depend on the individual case.
How quickly must the landlord react?
For acute dangers such as water damage or health-threatening mold immediate action is expected; specific deadlines may vary.

How-To

  1. (move-out) Secure people and remove valuable items from affected areas.
  2. (evidence) Document damage with photos, videos and dated entries.
  3. (contact) Inform the landlord in writing and request a repair.
  4. (within) Set a reasonable deadline for remedying the defect and state possible consequences.
  5. (court) If there is no response, consider legal action at the district court or seek advice.

Help and Support / Resources


  1. [1] RIS - Legal Information System of the Federal Government
  2. [2] Justiz.gv.at - Legal Information
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.