If every house is overvalued by some metric, then maybe the metric is wrong.
We're seeing people moving, and supply limits are influencing both rental prices and purchase prices. It's a weird housing market.
The question of the rationality of the valuation is:
1. Do you expect these migration patterns to continue? 2. If so, when do you expect new construction to pick up the slack for demand? 3. How bad of a recession is the Fed going to cause to break inflation?
housing that should depreciate over time.
It does, amusingly. Housing stock ages and units you build now will generally be worth less in 10-20 years. Land is the thing that can appreciate in value.