Mould in Your Apartment: Strata, Body Corporate, and Your Rights
Mould is spreading across your apartment bedroom wall, but when you contact the body corporate, they tell you it is your problem. Or maybe you have reported it three times and nothing has happened. If you live in a Melbourne apartment and you are dealing with mould, figuring out who is responsible — and getting them to act — can feel more frustrating than the mould itself. The answer depends on where the mould is, what is causing it, and whether the source is a common property issue or something within your lot.
Who Is Responsible: Owner, Tenant, or Body Corporate?
In Victorian strata and body corporate arrangements, responsibility for mould depends on the cause and location:
- Body corporate / owners corporation responsibility: mould caused by defects in common property — leaking roofs, failed waterproofing in common areas, inadequate building ventilation systems, faulty plumbing in common pipes, or water penetration through external walls
- Lot owner responsibility: mould caused by issues within the lot boundaries — internal plumbing leaks, poor maintenance of fixtures, failure to use exhaust fans, or modifications that created moisture problems
- Tenant responsibility: mould caused by lifestyle factors — not ventilating after showers, drying clothes indoors without extraction, or keeping the property sealed shut with no airflow
The difficulty is that many mould problems have multiple contributing causes. A bathroom mould issue, for example, might be caused partly by a failed waterproofing membrane (body corporate issue) and partly by inadequate use of the exhaust fan (tenant issue).
If you are a renter, understanding your tenant rights regarding mould in Victoria is essential before you start paying for remediation out of your own pocket.
Common Apartment Mould Causes in Melbourne
Melbourne apartments face specific mould challenges:
- Single-aspect units — apartments with windows on only one side have poor cross-ventilation
- Internal bathrooms and laundries — reliant on mechanical ventilation that may be undersized or poorly maintained
- Concrete construction — cold thermal mass in winter creates condensation on internal surfaces
- Failed waterproofing — particularly in buildings from the 2000s-2010s apartment boom, where waterproofing defects are widespread
- Shared plumbing — leaks from upstairs apartments can cause mould in the unit below
For practical strategies to reduce moisture, explore ventilation solutions for Melbourne homes that are adaptable to apartment living.
Steps to Take When You Find Mould
Whether you are an owner-occupier, investor, or tenant, the process starts the same way:
- Document the mould thoroughly. Photograph it with a date stamp and note the location, size, and any associated damage.
- Report it in writing. If you suspect a common property cause, notify the body corporate manager in writing. If you are a tenant, notify your landlord or property manager.
- Request an inspection. Ask for a professional assessment to determine the cause. This is important because responsibility depends entirely on the source of the moisture.
- Do not wait for a response to protect yourself. While waiting for the body corporate or landlord to act, improve ventilation in your unit, run a dehumidifier, and keep affected areas clean.
When the Body Corporate Refuses to Act
If the owners corporation is unresponsive or disputes responsibility, you have options under Victorian law. You can apply to the Victorian Civil and Administrative Tribunal (VCAT) for an order requiring the body corporate to carry out repairs to common property. Document your communications and gather evidence — an independent mould inspection report carries significant weight in these proceedings.
For renters, the rental property mould guide for Victoria outlines the specific processes available through the Residential Tenancies Dispute Resolution Service and VCAT.
Getting Professional Help
Whether you are the owner or the body corporate is footing the bill, professional mould remediation in apartments requires careful containment to prevent spores spreading to neighbouring units. We connect you with qualified specialists experienced in apartment remediation who understand strata requirements and can work within the constraints of multi-dwelling buildings.
Take Action Today
Do not let strata disputes stop you from addressing mould that is affecting your health and your property. We connect you with qualified mould removal specialists who can assess your apartment, identify the cause, and provide the documentation you need for body corporate or landlord negotiations. Start with our free mould risk assessment tool to understand your situation and take control.