Subletting & Co-Tenancy: Tenant Rights in Austria

Subletting, flat-sharing & co-tenancy 3 min read · published September 10, 2025

Many tenants in Austria wonder when subletting, flatshares (WG) or co-tenancy are possible and what rights and duties follow. This text clearly explains how consent requirements work, what responsibilities main tenants and subtenants have, and which steps you can take in disputes with the landlord. You will receive practical advice on checking the contract, documenting the condition of the dwelling, and correctly handling termination deadlines and defects. The aim is to give you, as a tenant, understandable and actionable information so that you know your rights and can act confidently in everyday situations.

What is subletting, WG & co-tenancy?

Subletting means that a main tenant rents parts of the apartment to another person. A WG exists when several people are joint main tenants or share a common rental contract. Co-tenancy often describes a contractual constellation where several people are jointly liable to the landlord. Which form applies affects consent obligations, termination rights and who is liable for damages.

The legal classification affects whether the landlord must give consent.

Rights and duties of tenants

As a tenant in Austria you have basic duties such as paying rent on time and taking care of the apartment. At the same time, you have warranty rights for defects and the right to privacy. Special rules apply when you agree on subletting or live in a WG: always clarify in writing who is the main tenant, who pays and who is liable for damages.

  • Pay rent on time and check utility bills.
  • Obtain the landlord's consent if the contract requires it.
  • Document and report damages and defects to the landlord.
  • Create a handover protocol to avoid later disputes.
Keep all written agreements and receipts stored safely.

Subletting and co-tenancy: specifics

For subletting, the main tenant's permission and sometimes the landlord's consent is required depending on the lease and the MRG. In co-tenancy, all listed tenants may be liable to the landlord for contractual obligations. Different notice periods and liability rules can apply, so it is worth checking the lease and the Rental Law.[1]

  • Observe deadlines for termination and consent.
  • Request written consents and agreements.
  • Clarify liability for damages.
Without the landlord's consent, subletting can be legally problematic in some cases.

What to do in disputes with the landlord?

If problems arise, document defects, send formal inquiries by registered mail or email and set reasonable deadlines for remedy. First try an amicable solution; if that fails, consider legal steps. In many cases, advice from tenant associations or legal counsel is helpful before involving the courts.

Early documentation increases the chances of success in disputes.

Frequently Asked Questions

Do I always need the landlord's consent for subletting?
In many cases yes: the lease or the Rental Law may require consent; therefore check your contract and obtain written permission.[1]
Who is liable for damages in a WG?
If one person is the main tenant, they bear responsibility to the landlord; co-tenants can be jointly liable if they are listed in the lease.
What notice periods apply when terminating a sublet?
Notice periods depend on the lease and applicable law; clarify deadlines in writing and set clear dates.

How-To

  1. Check the lease for clauses on subletting and possible deadlines.
  2. Inform the landlord in writing and request consent if required.
  3. Document the condition of the dwelling with photos and a handover protocol.
  4. Seek advice from tenant associations or legal counsel if unclear.
  5. If necessary, file a claim at the competent district court or use JustizOnline forms.[2]

Key Takeaways

  • Written agreements protect everyone involved.
  • Documenting defects is crucial for later claims.

Help and Support


  1. [1] RIS - Mietrechtsgesetz (MRG)
  2. [2] JustizOnline - electronic 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.