Documents for Rent Reduction for Tenants in Austria

Rent & increases (reference rent, categories, form) 2 min read · published September 10, 2025
Tenants in Austria often face the question which documents are needed to claim a rent reduction during renovation work. This practical guide explains in plain language which evidence, forms and deadlines you should observe, such as photos, logs and medical or contractor reports. It also shows how to notify defects in writing, record deadlines and store evidence securely. The information is aimed at tenants without legal training and lists next steps, including contact points and court procedures. With clear action steps you will learn to justify your claims to the landlord factually and meet deadlines so your rights are protected during renovation in Austria.

Which documents do you need?

For a solid file to support a rent reduction, collect the following documents as early and completely as possible:

  • Photos and videos of the damage or impairment.
  • A dated defect log describing the problem.
  • Written communication with the landlord, including requests for remediation.
  • Reports from contractors or expert opinions, if available.
  • A copy of the rental agreement and relevant attachments.
  • Receipts and bills (e.g. heating costs, repair expenses).
Detailed documentation increases your chances.

How to document defects and deadlines?

Proper documentation makes your claim traceable: date, time, location and precise description help a court or mediation board to assess the extent of the impairment.

  • Notify the landlord in writing and with proof, ideally by registered mail or delivery confirmation.
  • Set out demands and deadlines clearly and give a reasonable period for remediation.
  • Secure photos/videos with dates and collect them in a file.
  • Keep receipts for any additional costs (e.g. replacement heating).
  • Include contractor or expert reports where possible.
Keep copies of all correspondence and receipts safe.

What to do if the landlord refuses?

If the landlord refuses the reduction, review your documents and check the legal basis in the Mietrechtsgesetz (MRG) and related provisions. If necessary, you can have the matter decided by the competent district court[1]. Use the official justice portals for court procedures and e-forms when taking legal steps[2].

Respond promptly to legal letters to avoid disadvantages.

FAQ

What deadlines apply for reporting defects?
Defects should be reported in writing as soon as possible; setting a concrete remediation deadline can be useful so that your claims are clearly substantiated later.
Which pieces of evidence are most important?
Photos, a dated defect log, written communication with the landlord and invoices or expert reports are particularly persuasive.
Can I withhold rent?
Withholding the entire rent is risky. A proportional rent reduction is more common and should be asserted with thorough documentation.

How-To

  1. Document the damage: take photos, note dates, create a log.
  2. Inform the landlord in writing and set a remediation deadline.
  3. Record deadlines and avoid unnecessary extensions.
  4. Calculate the rent reduction and notify the landlord.
  5. If disagreement persists, consider court action or mediation.

Key Takeaways

  • Good evidence documentation is central to success.
  • Strictly observe deadlines and keep written records.
  • Contact official advisory and judicial resources early.

Help and Support


  1. [1] RIS – Legal Information System
  2. [2] JustizOnline – Official E-Forms
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.