Tenant Mistakes: New Builds & Rent in Austria

Rent & increases (reference rent, categories, form) 2 min read · published September 10, 2025
As a tenant in Austria, you often face questions about new-build apartments and the appropriate rent. Errors in categorizing the rent category, missing formal requirements, or incorrect statements about the reference rent often lead to unnecessary disputes. This article explains in practical terms which pitfalls occur in rental agreements and rent increases, how to check your rights and which deadlines to observe. I show concrete steps such as documentation, communication with the landlord and, if necessary, the filing of legal remedies. We refer to central rules such as the Mietrechtsgesetz (MRG) and typical procedures before the district court; official forms are available. At the end you will find practical tips for securing evidence and contacts for advice in Austria.

What are common mistakes?

  • Incorrect rent category or unclear contract clauses are accepted without question.
  • Missing formal requirements for index or step rents are not observed.
  • Insufficient evidence preservation during handover and for defects.
  • Opaque calculation of operating costs or rent increases.
Detailed documentation increases your chances of success in a dispute.

How to check the rent?

First check the lease contract and compare the stated rent category with applicable rules such as the Mietrechtsgesetz (MRG)[1]. Pay attention to specified rent, index or step rent clauses and the method of cost allocation. Use comparable rents from the area and request a transparent calculation of the increase from the landlord.

  • Collect documents: contract, payment receipts and handover protocol.
  • Ask the landlord in writing to explain the calculation and set a deadline.
  • Respond within the set deadlines to avoid loss of rights.
Respond to increase letters within the deadline, otherwise you may lose rights.

FAQ

Can the landlord freely set the rent in a new build?
No. For many tenancies, rules of the MRG apply; rent category and reference value affect whether the rent is reasonable.
What should I do in case of an unjustified rent increase?
Document everything, request a written explanation and consider mediation or filing a claim at the district court.
Must a termination or increase be made in writing?
Yes, certain formal requirements apply to increases and terminations; check the contract and request a written justification.

How-To

  1. Check the contract and determine the rent category.
  2. Collect receipts and photos, secure the handover protocol.
  3. Contact the landlord in writing, set a deadline and request evidence.
  4. If no agreement: seek mediation or consider filing in district court.
  5. Submit forms via JustizOnline and attend scheduled appointments.[2]

Help and Support / Resources


  1. [1] RIS: Mietrechtsgesetz (MRG)
  2. [2] JustizOnline: Forms and e‑services
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.