Mould in rental homes is more than a surface issue—it’s a health risk, a legal concern, and a common source of tenant-landlord disputes. At
Gardian Real Estate - Property Management, we prioritise safe, compliant homes and support both property owners and tenants in understanding their responsibilities under Queensland’s Residential Tenancies and Rooming Accommodation Act (
RTRA Act).
🔍 What Causes Mould in Rental Properties?
Mould is a fungus that thrives in damp, humid, and poorly ventilated environments—making Queensland’s tropical climate a prime environment. Common causes include:
🔧 Structural Issues: Leaking roofs, broken plumbing, or rising damp.
🌬️ Poor Ventilation: Inadequate airflow in bathrooms, laundries, and kitchens.
👕 Everyday Habits: Drying clothes indoors, not using exhaust fans, or sealing up airflow.
➡️ Tip from Gardian Real Estate: Early reporting makes all the difference. If you see signs of moisture, don’t wait—reach out to your property manager.
🧫 What Is Mould and How Many Types Are Common?
Mould reproduces via airborne spores and settles quickly in moist environments. The most common types in Australian homes include:
Aspergillus: Found on food and HVAC systems.
Cladosporium: Grows on timber, carpets, and upholstery.
Penicillium: Appears on water-damaged wallpaper and soft materials.
Alternaria: Thrives in showers and under sinks.
All mould types can trigger health concerns, especially for individuals with asthma, allergies, or compromised immune systems.
⚫ Is Black Mould Dangerous?
"Black mould" typically refers to Stachybotrys chartarum, a rare but toxic variety that grows with persistent moisture, often after major leaks or flood damage.
🛑 Not all black mould is toxic. Colour is not a reliable indicator. If you suspect mould of any kind, contact Gardian Real Estate for an inspection.
🧍♂️ Tenant Responsibilities
As a tenant, you play a key role in mould prevention. Under the RTRA Act, tenants must:
🧼 Keep the Property Clean: Regularly clean damp-prone areas.
🌬️ Ventilate When Possible: Open windows and use exhaust fans.
📣 Report Issues Promptly: Notify us if you spot mould or excess moisture.
If mould occurs due to negligence, tenants may be responsible for cleaning or covering repair costs.
🏘️ Property Manager & Owner Responsibilities
At Gardian Real Estate, we work closely with property owners to ensure their investments meet Queensland's safety and health standards. Landlord responsibilities include:
🔧 Fixing Structural Issues: Roofs, plumbing, and drainage.
💨 Ensuring Proper Ventilation: Maintaining fans and air circulation.
✅ Meeting Legal Standards: Properties must be mould-free unless caused by tenant behaviour.
We proactively maintain homes to prevent recurring issues and keep tenants safe.
📜 Minimum Housing Standards in QLD (2023–2024 Update)
From 1 September 2023 for new tenancies and 1 September 2024 for all tenancies, new standards apply. All Queensland rentals must be:
✔️ Weatherproof and Structurally Sound
✔️ Free from Mould, Damp, and Vermin
✔️ Properly Ventilated
These reforms help ensure all rental properties in Queensland are safe, healthy, and habitable.
🛠️ What to Do If You Discover Mould
📞 Report It Immediately to your Gardian Real Estate property manager.
🔍 Identify the Cause – we'll assess whether it’s structural or environmental.
🧽 Remediate Quickly – responsibility depends on the source.
✅ Final Word from Gardian Real Estate
Mould issues are preventable—and when they happen, we’re here to help. At Gardian Real Estate, we’re committed to providing safe, well-maintained rental homes across Queensland. We act quickly, communicate clearly, and ensure both owners and tenants are looked after.
➡️ Need advice or help with mould in your rental property?
Contact Gardian Real Estate today—we’re here to protect your property and your peace of mind.
🔗 Visit the
RTA website for more about your rights and responsibilities.
