To continue with the morbid analysis and answer your question for the US: most of the ~million people who died in the US either passed their homes on to people, or lost it all to medical bills in the process of dying.

A lot of the former is older people on public health care passing it on to people who already had homes, so likely joined the landlord class with the inheritance or sold it to people looking to rent it out. The latter's homes (if they had them) were sold to investment firms to pay the medical bills.

Most of the dead weren't buyers, and the supply that went on the market wasn't enough to change things.