Isn't this one of those "If everyone is crazy, you're crazy" situations? If every house is overvalued by some metric, then maybe the metric is wrong. People's perceptions of value are a large part of the actual value(meaning what someone would really pay) for things like housing that should depreciate over time.
I think there's a more concrete measure of value: house prices related to income. Historically (Robert Shiller has a chart for the US going back to 1890) house prices (and mortgages and rents) have maintained a stable relationship with income. Occasionally that relationship is strained but it has usually fallen back in line. One exception to this was the extraordinary, ongoing, support to the financial system post-20…
House prices will remain up because any gain from sale will be plowed into the next home. It's a ratchet upward. Higher mortgage rates are somewhat irrelevant in this dynamic, because the home itself is not an asset to get capital gain from, but a claim to shelter a family for an _indefinite_ period of time in a chosen location.
USA was inoculated for a very long time, because horizontal expansion over cheap land allowed for expansion of supply. That era is over. Car and highway technology is no longer adequate to expand cheaply and still remain within viable commuting distance.
There really is no limit on how high home prices relative to income can be. When meemaw dies, her inheritance will fund the downpayment of little Sally. That's the perpetuum mobile in Europe, which the US is now cranking up as well.
Rents may still remain affordable, but home prices will detach.