Housing is not a bubble, at least not in the U.S.A. The prices are supported by a fundamental shortage of the product. It is not driven by speculation but demographic pressure.
So, for instance, I think it's actually possible (not guaranteed) a substantial amount of housing will be built in the Bay Area in the next 10 years, which will decrease the willingness of people to pay $2M for a generic small house in a suburb.
‘Have never recovered’ can be misunderstood as if they were still ‘almost zero’ (which is also a bit of an exageration).