Mould in rental properties

Whether you rent or own your property, it’s not uncommon to encounter a mould issue at some stage during the year if conditions become damp

Here are some tips to help you avoid inviting mould into your home.

What is mould?

Mould is a fungal growth that thrives on moisture. It can grow in your home during the wetter months when conditions are damp, dark and poorly ventilated. Mould can grow in your bathroom, kitchen, cluttered storage areas, wall and roof spaces and behind furniture.

What health issues can mould cause?

When mould dries out or is disturbed, it releases spores which can cause illness in some people. It can also exacerbate existing health issues. This can include conditions like asthma, respiratory infections, sinus problems, rashes and watery, itchy red eyes.

Mould can also cause unpleasant odours and damage to building materials, contents and structures which may lead to expensive maintenance or management costs.

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Where does mould come from?

Preventing mould at home requires a joint effort by you and your landlord. It’s important to stop moisture from entering your home and growing once it’s inside.

A few common culprits of mould include:

  • surface water leaking into your property
  • rising damp
  • rain leaking into your house through the roof or walls
  • poor ventilation
  • showering, cooking and boiling without proper ventilation (exhaust fans/open windows)
  • using clothes dryers and unflued gas heaters without proper ventilation
  • indoor plumbing leaks
  • indoor liquid spills
  • storing large amounts of water-absorbent materials, such as books or cardboard boxes in a damp space

Both the tenant and landlord can be held responsible for damage caused by mould, depending on the circumstances.

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The tenant’s responsibility for mould

If you’re renting property in Australia, you must:

As a tenant, you may be in breach of your rental agreement if mould develops because you:

  • got the carpet wet and failed to treat it or let it dry out properly;
  • didn’t aerate the bathroom by using exhaust fans or opening windows;
  • left pools of water on the tiles outside the shower and let scum building up; or
  • dried clothes indoors and didn’t air the room afterwards.

Has mould caused damage to your premises or belongings? You can ask your state’s Magistrates Court for compensation. Keep in mind that while your landlord could be at fault for causing the damage, you should make every reasonable effort to ensure you don’t suffer any losses.

You’ll need evidence if your matter is going to the Tribunal. Photographs are a great form of evidence. If you have a serious mould issue, take photographs of the problem area and include these in your evidence.

Another way to produce evidence is by using a report from a company that assesses mould contamination. These reports can be pricey, but you need to isolate the cause of the mould and find out how safe your house is to live in, they can be a good idea.

If you want to make a claim for items that you’ve lost or had to have cleaned because of the mould, make an itemised list and be sure to include any invoices and receipts.

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The landlord’s responsibility for mould

Under tenancy law, property owners acting as the landlord must:

  • keep the rental premises in a reasonable state of repair;
  • meet building, health and safety requirements; and
  • ensure repairs are undertaken in a reasonable period of time.

As a landlord, you could be facing a breach of the rental agreement if mould develops as a result of not attending to maintenance matters reported by the tenant, such as:

  • damp walls caused by plumbing issues;
  • a broken exhaust fan or wall-mounted heating unit; or
  • a leaky roof, broken pipe or flood damage.

The key to keeping your rental property free of mould is common sense. If you’re a tenant, keep your home reasonably clean and stay in touch with your landlord. Tell them in writing as soon as you notice mould in your home that can’t be easily fixed.

If your valuables are being affected by mould, clean them quickly and put them somewhere that they won’t be damaged. For example, you should remove your clothing from a wardrobe where mould is growing.

How to remove mould from your home

A simple, more gentle way to remove mould from your home is by using white distilled vinegar. To make your solution, pour it into a spray bottle without watering it down. Spray your vinegar onto the mouldy surface in your home and leave it for an hour before wiping it clean with water.

If you’d prefer to go down the chemical route, bleach will kill mould spores on the surface of your affected surfaces – but vinegar is strong enough that it will kill the mould at the roots.

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Lauren Vardy
Content Manager at | Website

Lauren Vardy is author behind the Rent.com.au Blog, a site built to help renters find a home and navigate their renting journey. She is the Content Manager at Rent.com.au. Outside of work, she dabbles in all things health, fitness and houseplants.