Up to about 15 years ago, Vancouver had a normal housing market based on jobs and the area economy. 
Many things on this planet changed with the 9/11 attacks and our housing market was one of them. The Feds took resources away from the RCMP border security units such as the one dealing with money laundering and the result is that Vancouver is currently one of the top 3 money laundering cities on this planet.
The only solution is to go back to the way things were done prior to September 11, 2001 and keep the dirty foreign wealth out of the country but, with Sonny Daze in charge...good luck with that.