1) taxing vacant properties: Vancouver started this, although with the intent of keeping out foreign riff raff. Eg, there may be loopholes for the longtime BC residents who just happen to own a second condo. It will be interesting to see how that plays out over time.

2) then you won’t get any new builds being built. Especially combined with all the regulations on minimum parking sizes, %age of below market units, if you add on permanent rent control, you may well tip over into the point where no developer will risk building because any project is guaranteed to be a loss.