This article is from 2016, but provides a possibility of what could be....large part will depend how many people stay afloat and how many go under. Then it will depend on what % of people just walk away and let's face it when they lose everything, do you think they will be thinking how they can help those that still have their home?What impact would 30% unemployment have on mortgage defaults? I can guarantee the banks on both sides of the border have run those numbers.
One of the big bads from the 1980s is starting to emerge again in Alberta.
Jingle mail — the act of walking away from an underwater mortgage by mailing your keys back to the bank — is a peculiarity of the Alberta residential market and an act of desperation. However, a combination of high debt and lost jobs make it an option in a province going through a significant economic reckoning.
"It's when you see high-end home prices drop 20 per cent below the peak," said Alger. "I think there are people considering walking away and I've talked to one or two myself."
Why Alberta is different
Alberta is the only Canadian province to broadly offer non-recourse residential mortgages. Those are loans with at least a 20 per cent down payment and thus are not insured by the Canada Mortgage and Housing Corporation (CMHC).
If you walk away, you lose your home, but otherwise have no personal liability. Elsewhere in Canada, your lender can take you to court and seize other assets, such as RRSPs, vehicles, and even garnishee your wages.
https://www.google.com/amp/s/www.cbc.ca/amp/1.3430867