Is My Home a Former Grow Op?

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| 2013 Jan 21 |
Is My Home a Former Grow Op?

There’s every possibility that the house that you live in or are about to purchase is a former grow op (i.e. marijuana grow operation). What’s more, most grow ops are so well organized that it’s next to impossible for an average person to detect the signs.

Fortunately, there are some things you can watch out for that might suggest the house was once used as a grow op:

  • Mold in corners, where walls and ceilings meet
  • Discoloration of the roof
  • Condensation
  • Signs of modified roof vents and drainage systems (marijuana grow ops need increased ventilation to remove excess moisture produced by the growing process)
  • Painted concrete floors in the basement with circular marks (from pots)
  • Tampered electric metres with damaged or broken seals (grow ops require heavy electricity to operate)
  • Bypassed hydrometers
  • Modified or unusual wiring both inside and outside the house (to draw high amounts of power—more than a transformer can legally)
  • Brownish stains around the soffit that drains along the siding
  • Patterns of screw holes on the walls
  • Altered fireplaces
  • Scratches, hollows, and depressions on the front door (result of police intrusion)
  • Concrete masonry patches or alterations on the inside of the garage

A recent police raid in Winnipeg, Canada accidentally led to the discovery of a
marijuana grow op. Fire crews discovered the operation following a string of house
fires, which ironically enough, were not caused by the grow op. However, the incident
definitely revealed the illegal activity, and about 82 marijuana plants were discovered in
the houses.

Is Worrying About a Grow Op a Waste of My Time?

If you’re certain that your home is not a former grow op, it’s still worthwhile to get
a professional grow op inspection. Why? Former marijuana grow operations often
have dangerous structural defects due to the changes made in an attempt to create
ideal conditions for growing marijuana. The structural defects leave homes unsafe for

In addition, grow ops lead to serious mold contamination of the home, and the toxic
gases badly pollute indoor air quality. These air quality issues continue to be a major
problem even after the grow op has been abandoned. The best way to deal with former
grow ops is to get them inspected by a reputable grow op inspection company and, if
necessary, book a professional mold remediation.

Mold Busters, Canada’s best mold removal company, has been providing fast and
affordable grow op inspection and grow op removal services for over five years.