Renter mould rights in Australia: a state-by-state guide

A plain-English guide for renters. Published by Aurala Naturals. This is general information, not legal advice. For advice about your specific situation, contact your state or territory tenant union or advice service, linked below. Last updated 2026.

Does your landlord have to deal with mould? It depends on two things: which state or territory you rent in, and what caused the mould. As a rule, where mould comes from the building itself, poor ventilation, a leak, rising damp or a structural fault, it is the landlord's responsibility. Where a tenant clearly caused it, for example by never ventilating, that part can fall to the tenant. Four states now address mould, damp or ventilation in their rental minimum standards, and three of them, Victoria, South Australia and Queensland, name mould directly.

Is mould the landlord's responsibility or the tenant's?

The dividing line across Australia is cause, not who noticed it first. Mould that grows because of the building, a roof or plumbing leak, a bathroom with no working exhaust, single-glazed windows that stream with condensation, rising damp, or a structural defect, is generally the landlord's to fix, because the landlord must provide and maintain premises that are fit to live in. Mould that a tenant caused, by drying washing indoors in a sealed room for months and never opening a window, for instance, can be the tenant's to deal with. Most real cases are about the building, which is why the standards below matter.

Which states protect renters from mould?

Whether mould is named in the rental minimum standards depends on where you rent. This table summarises the position (the same sourced data behind our Renter Mould Index). Always confirm the current wording with your state tenant service, because tenancy rules change.

State or territory Mould in the minimum standard? Who is responsible?
Victoria Yes. Every room must be free from mould and damp, with adequate ventilation. Landlord for structural or ventilation causes; tenant for tenant-caused.
New South Wales Yes. Adequate ventilation is one of seven minimum standards. Landlord for building or ventilation defects; tenant only where the tenant caused it.
Queensland Yes. Premises must be weatherproof, structurally sound, and free from damp and mould. Landlord for building or ventilation causes; tenant for tenant-caused.
South Australia Yes. Prescribed standards require rooms free from damp and mould. Landlord for structural or ventilation causes.
Tasmania Partial. Premises must be clear of mould, weatherproof and not significantly damp. Landlord for habitability; tenant for tenant-caused.
Western Australia Responsibility rules only. Tenant liable only for tenant-caused mould, and the landlord cannot charge the tenant for building-caused mould. Landlord for building causes; tenant only for tenant-caused.
ACT Minimal. The main enacted numeric minimum standard is ceiling insulation; mould sits under the general habitability duty. Landlord under the fit-for-habitation duty.
Northern Territory No prescribed mould schedule. Handled under the general habitability and repair duty. Landlord under the habitability and repair duty.

Standards on paper are not the same as homes that meet them. A La Trobe Business School study of Victorian rental audit data found just 39.91% of 1,723 homes audited in early 2024 met the minimum standards, with mould and damp among the persistent failures, published in the journal Cities. If your rental has mould, you are far from alone.

How to raise mould with your landlord or agent

The single most useful thing you can do is put it in writing, early. A verbal mention at an inspection is easy to forget and impossible to prove later. A short written request creates a record and starts the clock.

  1. Report it in writing to your property manager or landlord. Email or the agency's portal is ideal, because it is dated and saved. Describe where the mould is, when it started, and what you think is behind it, a leak, a broken exhaust fan, condensation.
  2. Ask for a specific action, such as an inspection, a repair to the cause, or professional treatment, rather than just flagging that mould exists.
  3. Keep ventilating and drying in the meantime so the situation does not worsen while you wait, and so a tenant-caused argument does not gain ground.
  4. Follow up in writing if you do not hear back in a reasonable time. Keep every message.

The evidence that helps your case

If it ends up in dispute, evidence is what decides it. Build it from day one.

  • Dated photos of the mould, and of the likely cause if you can see it, the leak, the missing or broken exhaust fan, the streaming window. Retake them over time to show it returning or spreading.
  • A written record of every report and reply, kept somewhere you will not lose it.
  • Notes on the pattern, such as the same wall going mouldy every winter, which points at the building rather than at you.
  • Any professional opinion you obtain, for example from a building inspector, if the problem is serious.

If it is not resolved

If the landlord will not act, you do not have to accept it, and you should not go it alone. Your state or territory tenant service can advise you on your specific situation and the current process, and most disputes that cannot be settled directly go to a tenancy tribunal or court. Start with the free advice service for where you rent:

  • NSW: Tenants' Union of NSW and the local Tenants Advice and Advocacy Services. Disputes go to NCAT.
  • Victoria: Tenants Victoria. Disputes go to VCAT.
  • Queensland: Tenants Queensland, with the Residential Tenancies Authority offering free dispute resolution first. Disputes go to QCAT.
  • South Australia: RentRight SA, the free tenant advice service (delivered by SYC). Disputes go to SACAT.
  • Western Australia: Circle Green Community Legal. Tenancy disputes are heard in the Magistrates Court.
  • Tasmania: the Tenants' Union of Tasmania. Most tenancy disputes, including repairs and mould, are handled by the Residential Tenancy Commissioner first, and then the Magistrates Court if needed.
  • ACT: the Tenancy Advice Service at Legal Aid ACT. Disputes go to ACAT.
  • Northern Territory: the Tenants' Advice Service at Darwin Community Legal Service, with disputes heard at NTCAT.

Please confirm the current name and process for your service before you rely on it, because these bodies and their rules are updated from time to time.

What you can do about the mould yourself

While the responsibility side plays out, the mould is still in your home, and there are things within your control that do not need anyone's permission. The levers are moisture and airflow: run the exhaust fan well past every shower, wipe condensation off windows and cold walls in the morning, keep furniture a little off external walls so air can move, and open up on dry days. For a simple summary of why mould keeps returning after you clean it, see our guide on how mould works and why it comes back.

Common questions

Can I be blamed for mould in my rental?

Only where you clearly caused it. Mould from a leak, poor ventilation or a building fault is generally the landlord's responsibility. Keeping the place ventilated and reporting problems early protects you.

Can I withhold rent until it is fixed?

This is high risk and the rules differ by state, so do not do it on your own read. Get advice from your tenant service first, as withholding rent incorrectly can put your tenancy at risk.

Can I break my lease over serious mould?

Sometimes, where a property is genuinely not fit to live in, but the threshold and process vary by state. This is exactly the situation to take to your tenant service. As of 2026, that is the safe first step.

Related resources

Free to cite with attribution to the Aurala Naturals Renter Mould Rights guide, 2026. Aurala Naturals makes First Light, a natural mould-defence blend made in Australia. This guide is general information, not legal advice.