I think it will depend on the interest rates. In the past 5 or 6 years, people are paying around 3% interest rates. Having a mortgage for 1+ million dollars home, people are stretching out for the monthly mortgage payments perhaps between 4,000 and 6,000 after-taxed dollars when making the 5% down payment.
So when the interest rates will jump a little to double what they are getting in the past 5-6 years to perhaps around 6%, then their monthly mortgage payments will be around 8,000 to 12,000 dollars per month. At that time, a lot of people can no longer afford to pay the increased mortgages. Then there will be flooded of homes sale in the market and lots of people will lose their homes from unable to make the monthly mortgage payments.
It will be a blood bath of the recent home owners who purchased their home in the last 5 years and having 1+ million dollars mortgage on their backs.