Mould issues in rental properties have become increasingly common in Western Australia, with Consumer Protection reporting a 21.2% rise in complaints and a 9.1% increase in enquiries about mould in the last financial year alone. This growing concern requires both tenants and landlords to understand their responsibilities when it comes to preventing and addressing mould problems.
Health Risks of Mould
Mould is more than just an unsightly problem. This fungal growth thrives in moist environments and can pose serious health risks, particularly for those with respiratory conditions like asthma. It can cause respiratory infections, skin rashes, and create unpleasant odours throughout the property. Residents need to know what signs of mould to look out for.

Landlord Responsibilities
Under Western Australian tenancy laws, landlords must provide and maintain rental properties to minimum standards, ensuring they are safe and habitable. When it comes to mould specifically:
- Landlords are responsible for fixing structural issues that lead to mould growth, such as leaky roofs, faulty plumbing, or inadequate ventilation
- They must address mould caused by faults in water ingress or malfunctioning fixtures, like exhaust fans
- Landlords should respond to repair requests in a reasonable timeframe, where practical.
Tenant Responsibilities
Tenants, on the other hand, play an important role in preventing mould growth:
- Regular cleaning and proper ventilation of the property, especially in moisture-prone areas like bathrooms and kitchens
- Using exhaust fans when showering or cooking
- Opening windows regularly to allow air circulation
- Promptly reporting any water leaks or signs of mould to the property manager
What to Do When Mould Appears
If you discover mould in your Perth property, whether you are a tenant or a property owner (or landlord), document it with photos and report it immediately. The mould remediation will depend on the cause and severity of the mould.
When To Call a Professional Mould Removal Service
Kleen Slate Services has helped hundreds of landlords and tenants to remediate and maintain healthy living environments. Call us today on 08 9500 7999.
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