The answers to my question below are in. The best answer: US equvalent to Canadian grow house is "indoor growing operation".

The best reason given why I couldn't find any articles from the United States on grow houses: the United States is warmer than Canada and it is chilly Canadian weather that necessitates indoor "pot plantations."

I started researching the phenomenon of the grow house after finding a bright yellow flyer in my mailbox that read:

PROTECT YOUR COMMUNITY AND YOUR CHILDREN
AND Reduce Your Hydro Bill
Be a Grow Buster

After surveying my co-workers, the only ones who received the same flyer just happen to live in my neighbourhood.