It goes without saying that when you are hired to market a property, you will find out as much as you can about it to ensure you can find a buyer or a tenant — whether that is information about the house’s design and construction, an understanding of its location and potential price or insider knowledge about the neighbourhood.

One thing that might not be considered is whether the house has been used for illegal activities and whether these activities have had a lasting impact on the property. Attention to these factors has become important recently with the rise in the creation and consumption of a drug called methamphetamine, which has almost tripled since 2011.

Methamphetamine (also called ice or meth) is a highly addictive drug that is made or ‘cooked’ inside properties, which leads to contamination. This contamination has considerable consequences for any current and prospective inhabitants, as well as the condition of the property itself. For example, in 2016 the Courier Mail reported that a family who had purchased a house in rural Victoria had discovered their six year old son had the same levels of methamphetamine in his body as an adult drug abuser, just by living in the house. The family sued the local council for not disclosing the activities.

The chemical fumes that are a by-product of the drug seep into plaster, paint, carpet, the walls, furnishings and the floor, and it is very difficult to remediate — properly decontaminating the house can require completely gutting a property to a shell and in some cases it can be cheaper to demolish. In New Zealand, meth contamination has become such a problem that home insurers like IAG have recently increased premiums and excess levels.


All agents need to be aware of what kind of property they are marketing and whether they need to disclose that some kind of illegal activity — such as meth cooking — has taken place in the property.

A failure to disclose methamphetamine contamination may result in an agent being liable for misleading or deceptive conduct. Indeed, in 2016 in New Zealand a family sued an agent who sold them a meth contaminated house. It is likely that methamphetamine contaminated houses will be seen as ‘stigmatized properties’ — if an agent sells such a property without disclosure they may be open to large fines.

Finding out that a house is being used for illegal activities is likely to be difficult. Some signs of meth contamination can include burns, rust in unusual places like doors and windows, strange smells and stains, and yellowed walls. It may also be prudent to include a section regarding awareness of illegal activities on a client questionnaire when you are first engaged. It may then be necessary to make further enquiries to ensure no misrepresentations are made.

It is clear that smoking meth ruins lives, but the cooking of meth ruins houses.