On the foreign purchases element, these types of measures have been tried in other countries before. Hong Kong is a classic example where they've tried this. What typically tends to happen is that house prices tend to stabilize after these measures are put in, and then they just start picking up and growing again. Usually the reason behind that is there are many factors that are driving up house prices, and maybe foreign purchases are one of them, but it's much more complex. Many other factors are doing it. These measures are definitely not a solution for that.
On January 30th, 2017. See this statement in context.