@Thomas,
I'm following both of you, who know way more about the systemic concerns than I do. I tend to nod with what each of you is saying in turn.
Anyway, when I sold my house in California in very late 2005 in order to use what equity I had to make it in a smaller place somewhere - not very much given I had a 2nd mortgage - I did it in a big hurry because of my antennae that the real estate gains would blow up. So even I, a financial dolt, smelled trouble. I suppose I could have tested the limit for some more time. I'd seen them blow before - I had a neighbor in the early nineties see his new used house devalue from $325,000 to $190,000. Well, that perked back up in time, re those conditions.
On property taxes - I was one of the ones who benefitted from California's proposition 13, as a never well-moneyed home owner. I wished corporations would pay their share, and not have so many loopholes, but as usual I don't understand the complexities of all that.
Presently I own my small home, but scramble badly to pay the property taxes here. I may lose it over that in the coming year or two. Raising property taxes now can send more people into deeper trouble. Luckily I read that there is a way here in this county to put a hold on further raising of the p. taxes for people who qualify, and I did. Wish I'd known about that earlier. Probably should have read some fine print.