About a week and a half ago, I came across this video at YouTube, that shows YTV's operations being moved during a night in late-1990, from it's original home to where they settled for nearly 20 years, at Jefferson Ave. The video is below.
There's a small clue in here about where YTV began it's existence when someone said they were moving from 'the Lakeshore', but I don't know if that actually means somewhere on LakeShore Blvd.
My question is just where YTV's 1st broadcast home was?
I'm pretty sure it was at Bathurst and Lakeshore - south-east corner. Loblaws had the north-east corner and Molson's was on the north west. Omni was in the building afterwards (still is, I think). It's a Rogers property
That makes sense. At the 8 minute mark, someone holds up a book and refers to Lakeshore as if it was a street. It was Maks Maksimovic, who posted the video and isn't a native English speaker, that posted "This was 1988. YTV finishes programing on the Lakeshore and starts moving to Jefferson."
If you're interested in the history of YTV, here is the original CRTC approval in 1987, which lists Rogers as a 25% shareholder, so it would make sense for YTV to use their facilities to launch the network. https://crtc.gc.ca/eng/archive/1987/DB87-903.HTM
I agree with your YouTube comment that the move probably happened around November 14, 1990.