1) Extremely low interest rates combined with government backed mortgages (CMHC) means lots of people now have mortgages they will be unable to carry if interes

1) Extremely low interest rates combined with government backed mortgages (CMHC) means lots of people now have mortgages they will be unable to carry if interests rates rise by 1% (as that would be a 50% increase in their interest payments...) 2) Foreign investment (Vancouver+Toronto).