Is Your Landlord Violating Co-Tenancies Laws in South Australia?

Living in a rental property with others can be both a rewarding and complex experience. Whether you're in a co-tenancy, subletting, or shared housing in South Australia, it's important to understand your rights and obligations under the Residential Tenancies Act 1995. This can help you identify if your landlord is violating any laws, ensuring a fair and lawful living arrangement.

Understanding Co-Tenancies and Subletting in South Australia

Co-tenancy occurs when two or more people sign a lease agreement, sharing equal responsibility and rights. In contrast, subletting involves a tenant renting out part or all of their rented premises to another person, with the landlord’s written consent.

Key Rights in a Co-Tenancy

  • Each co-tenant is jointly responsible for rent and property maintenance.
  • Changes to the lease, like adding a new co-tenant, require the landlord’s consent.

Subletting Requirements

  • Landlord’s written consent is required to sublease or assign the property.
  • A sublease doesn’t change the original tenant’s obligations to the landlord.

To ensure compliance, a landlord cannot unreasonably withhold consent to sublet, as outlined in the Residential Tenancies Act 1995. If disputes arise, the South Australian Civil and Administrative Tribunal (SACAT) can help resolve issues.

Signs Your Landlord Might Be Violating the Law

Watch out for these red flags, which could indicate that your landlord is breaching co-tenancy or subletting laws:

  • Refusal to provide written consent for subletting without valid reasons
  • Unlawful increase in rent after a co-tenant moves out
  • Entering the property without proper notice or agreement

How to Take Action

If you suspect a violation, consider the following steps:

  • Discuss your concerns with your landlord first. Misunderstandings are common, and communication may resolve the issue.
  • If the problem persists, document everything. Keep records of all communications and notices related to your tenancy.
  • Apply to the SACAT for mediation or a hearing if an agreement cannot be reached.
Keep a close record of any communications you have with your landlord regarding rental agreements or changes. This can be crucial if a legal issue arises.

Need Help? Resources for Renters

If you need additional help, contact these resources in South Australia:


  1. Can my landlord refuse to let me sublet? Your landlord can only refuse subletting if they have reasonable grounds. They cannot unreasonably withhold consent.
  2. What happens if a co-tenant leaves? Remaining tenants are still responsible for the rent unless a new agreement is reached with the landlord.
  3. Do I need the landlord's permission to add a co-tenant? Yes, any addition to a lease requires the landlord’s written consent.
  1. How to resolve a co-tenancy dispute in South Australia
    1. Try resolving the issue directly with the people involved.
    2. If this fails, apply to the South Australian Civil and Administrative Tribunal (SACAT) for mediation or a hearing.

Key Takeaways:


  1. Residential Tenancies Act 1995
  2. Consumer and Business Services SA
  3. South Australian Civil and Administrative Tribunal (SACAT)
Bob Jones
Bob Jones

Editor & Researcher, Tenant Rights Australia

Bob writes and reviews tenant law content for various regions. They’re passionate about housing justice and simplifying legal protections for tenants everywhere.