EDIT: I am specifically referring to the "Price to Income" chart in my comment below, not the one that shows up by default. Sorry for the confusion.
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Uncheck everything but the 'US' graph. Different data sources give different ratios, but they all show that it's still well above historical norms & headed up. Some data sources say that it's already approximately back to where it was in the peak (see a link further down, that chart is up-to-date), others like this one only show it ~1/2 way there (note tat this chart is two years out of date), but either way we're above what has been stable in the past.
People are just stubborn and think that if they can't afford the type of house they want in the type of neighborhood they want in the city they want, then housing must be in a bubble and out of reach.
Just look to how much online universities typically charge for tuition. Answer: the max given in federal financial aid.
I don't see it. Maybe bubbly areas like SJ will correct a bit, but at the end of the day real estate is a supply/demand calculation. YoY% increases don't look like they did in the last bubble.
The more people who want to live somewhere -- whether renters or buyers -- the higher the prices go, until sales start dropping off. Real estate is like anything else: it's worth whatever you can convince someone to pay.