Your numbers are messed up.

In 1986 Vancouver, many houses sold for about 100,000 dollars - you could still even buy houses on the west side for under 150,000 dollars. But on the East Side, in 1986, plenty of houses were under 100,000 dollars.

From inflation, your 10,000 dollars in 1950 equals 50,000 dollars in 1986. And that is not far off from the price of a lower-end house in East Vancouver in 1986. 

So I reject your attempt at math analysis.

I direct your attention to a graph website below. It is pretty obvious that house prices in Vancouver started to really skyrocket with the arrival of massive amounts of overseas money beginning in the 1980s via Hong Kong, prices nearly doubling from around 1986 to 1990 and then roughly doubling again,  money from mainland China mainly, from around 2001 to 2007 and then roughly doubling again since then.

vreaa.wordpress.com/2010/09/11/five-charts-predicting-future-vancouver-housing-prices-with-the-aid-of-technical-analysis/