20 years ago, bubble-watchers were looking at metrics like price-to-rent and price-to-income to see how overvalued prices were and how overextended buyers were. Flipping was pretty rampant in those days, i suppose the flippers are doing airbnb now instead. I don’t think the crash will be as dramatic as it was in 2008-9, but you know, that which can’t go on forever, won’t.