Yes I also live in the GVRD (Burnaby) and agree that purchases by those from China has been a big factor in our huge housing price rises.  I saw it happening  around 1970, when my house rose about 300% in 7 years. 
 The population mix change illustrates what has happened as those from China and a few other Asian countries have become the majority living here.
 Vancouver city and spreading outward is fast becoming a city of Asia !