Mould has been linked to respiratory illnesses and can lead to major health concerns. It typically thrives in damp or humid areas that lack proper ventilation, including:

Walls and wallpaper

Ceilings

Bathroom tiles

Carpets, particularly those with jute backing

Insulation materials

Wooden surfaces

Ensuring adequate ventilation is one of the seven minimum standards that properties must meet to be considered suitable for living.

The property condition report includes a dedicated section for noting mould. Both landlords and tenants should document any mould issues during this report.

ResponsibilitiesLandlords’ Responsibilities

If mould has arisen due to moisture buildup because a landlord has not fixed a faulty window within a reasonable timeframe, or if the property lacks sufficient ventilation, the landlord is responsible for addressing the issue.

If mould occurs shortly after the tenancy begins, it may be regarded as pre-existing damage. Regardless, landlords must ensure that the property remains in a reasonable state of repair. If any faults or damages pose safety risks, including mould growth, this may classify as an urgent repair.

Tenants’ Responsibilities

If mould develops during the tenancy due to the tenant’s actions—such as failing to open windows or not using ventilation fans in the bathroom—the tenant may be deemed responsible for the mould issue.

Tenants are required to inform the landlord or agent as soon as they notice any signs of mould or dampness during their rental period.

For more guidance on the health risks associated with mould, contact your local Public Health Unit at 1300 066 055.