In all fairness, Canada and Australia are more or less commodity extraction economies with catastrophically inflated real estate markets. Lower commodity prices could prick that situation and cause some jumbled jonathans.
History may not repeat itself but it definitely rhymes.
Have you seen the pictures?
Vancouver is actually one of the poorest large cities in Canada. Average income in Vancouver proper in 2009 was $43,911. https://www.biv.com/article/2014/9/trick-or-treating-planner...
All this means that Vancouver is the 2nd most unaffordable housing market in the world (after Hong Kong) http://www.theglobeandmail.com/news/british-columbia/only-ho....
Accordingly a housing is already so inflated that a 10% drop means nothing. Even a 20% drop wouldn't make things affordable.