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5 signs your property is a drug lab

27 July 2016 Carolyn Parrella
Carolyn Parrella

No landlord wants to see their investment property involved in an illegal drug bust on the evening news, so here’s how property managers can tackle the problem early.  

Illegal drug manufacturing can cause tens of thousands of dollars worth of damage to rental properties and leave unsuspecting landlords without rental income for a considerable amount of time.

Tenants involved in cultivating illegal drugs, such as cannabis, methamphetamine, ecstasy and ice, go to great lengths to hide their activities.

Early detection is important to help avoid or minimise financial exposure.


Included below are five signs an investment property is being used as a drug lab.

1. Unauthorised modifications to the property

  • Check for potential tampering of the property. Hydroponic set-ups may require pipes or hoses to be filtered through the roof or the property’s manhole. Unexplained holes in the ceiling could be a sign of hidden systems.
  • Meter boards are commonly tampered with or rewired, particularly those situated near walls, walk-in wardrobes or built-in cupboards in order to connect electricity wires to the power source.
  • Extensive and excessive security systems, such as barbed wire fences, CCTV cameras and guard dogs, can also be cause for suspicion.

2. Irregular activity

  • When conducting property inspections, look for signs that the property is lived in. Drug manufacturers generally do not live in the properties they are using to cultivate drugs.
  • Drawn curtains or lowered roller shutters in daylight hours could be signs of attempts to hide illegal activity.
  • Infrequent visitors during strange hours or for short periods of time can also trigger suspicion.

3. Visible damage

  • From an insurance perspective, damage caused by illegal activity is considered a malicious act and likely to be viewed as an insured event.
  • Intense lighting, which is used in hydroponics, can cause visible fading to paintwork, so check beneath rugs and behind photo frames and open doors for discrepancies in colour.
  • Similarly, look for signs of water damage – such as warped walls and floorboards, or stained carpets – because there’s a chance it could be more than just a leaky roof.

4. Unusual items on site

  • Certain items are commonly used to manufacture illegal drugs, including glass flasks, beakers, rubber tubing, gas cylinders, chemical containers, drums, drain cleaner, garden fertiliser and cough, cold or allergy medicine.
  • The non-visible damage cost, such as the forensic cleaning required on a property that has been used to manufacture chemical substances, is often one of the most expensive.
  • Portable air conditioners are also often used when cultivating hydroponic crops.
  • If such items are present at the property and are inconsistent with practical use, it could indicate the presence of a drug laboratory.

5. Suspicious dealings

  • New potential drug-manufacturing tenants may be willing to pay rent months in advance and be happy to pay cash. This may be their way of keeping their landlord off their backs and leaving no paper trail for the authorities.
  • Other suspicious signs include applicants who try to avoid background checks and tenants who regularly postpone or cancel property inspections.
  • Landlords and property managers suspicious of illegal activity should contact authorities immediately and not confront the tenant directly.
5 signs your property is a drug lab
carolyn parrella rpm
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Carolyn Parrella

Carolyn Parrella

Carolyn Parrella is Executive Manager of Australia’s leading landlord insurance specialists, Terri Scheer Insurance. Terri Scheer provides insurance cover for landlords, helping to protect them against the risks associated with owning a rental property. These include malicious damage by tenants, accidental damage, landlord’s legal liability and loss of rental income. 

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