Are Remediated Grow-ops Safe to Live In?

Before Cannabis legalization, the real estate industry was always on high alert for what we used to call a “grow operation” in homes we took part in selling. At the time, we were told “once a grow op, always a grow op”. This meant that at any time, spores could grow and spread throughout the home, even if “remediated”. It was highly recommended we discuss disclosure with the owner, in case this were to happen in the future. Mainly because, on the offer to purchase, including the contracts of today, the owner is to disclose known material latent defects. Material Defect means a defect in the property that is not discoverable through a reasonable inspection and that will affect the use or value of the property. 

At the time, we were taught that due to Alberta having no regulation around remediation, so there was no certain way to say each remediation company did the same work. 

As of October 17, 2018, adults were allowed to grow cannabis at home; up to four plants per household (not per person) for personal consumption. the

A realtor today should be using a schedule for both parties to a contract asking for disclosure:


the Seller(s) hereby expresses, to the best of my/our knowledge and belief, the premises and property have not been used for the manufacture of illegal drugs or used as a marijuana grow operation.

Marijuana Grow Operations (MGO’s) are not always disclosed. Ideally, the seller will know, but not always. An MGO premises is usually subject to an order and a Notice of Health Hazard registration or maybe a police registration on title. It is best to pull the historical title. But this is not necessarily so either. Sometimes a google search can help. Or, just knocking on a door and asking a neighbour. Now, obviously most do not knock on doors, but, if something may be suspected, then yes, knocking on neighbours doors and asking if they know anything may be your best bet. 

Are remediated grow ops safe to live in? Many say they are better than a re-sold home. Alberta, to this day, does not have a remediation regulation in place for MGO’s. Alberta Health Services has a detailed list of requirements for repair/rehab/remediation. 

***The risk will still be, like a nagging worry in your mind, did they get it all out.*** 

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