Hovering over the prop13 discussion here, I've got my own grievances about housing prices in the US, specifically housing prices vs income levels and cost of living levels... I live in a relatively unique area, rural(ish) community, relatively small town, which houses an Ivy League University. As a result, there's a ton of very expensive houses in the area ($700k+), and a ton of pretty expensive apartments ($800+/mo for slummy, $2k+/mo for nice stuff near downtown/public transportation). Many of the homes and whatnot are a bit outside of town, 15m or so, which isn't terrible, and can sometimes insulate you against the rich students who don't bother to have a car, as reliance on public transportation tends to drive them inward toward the expensive apartments. The problem I have is that, I can't afford a $700k house, period, that's just not happening. I can afford a $150-$250k house, if I stretch it (dropping about $1400/mo on a duplex rental right now). Unfortunately, every single house within a half hour commute (mind the winters) is either a) new, and very expensive for what you get, b) old, and falling apart, would require $40k of renovations to be desirable, c) new, cheaper than a, but made like absolute garbage. To add to the fun, all the land is overpriced because everyone's decided the land is worth a ton due to the ability to price houses at $700k in the area (nevermind the fact half are empty/for sale).
So to have a decent place at a not-stupid-price-point, I've gotta buy some overpriced land from some asshat developer, and get a house built to my specifications, just so I know it's not horribly built, as all the ones in my area seem to be.
I didn't have any issues like this in my first home, because the housing prices were actually reasonable for the area. Supply and demand seems all sorts of jacked up once you get a handful of buyers that can afford something expensive... it's like the developers start licking their chops and pump out $500k+ homes as soon as a single one sells, regardless of what the market can actually support.
EDIT: For perspective, the average household income of the city is $30k, right now there's just as many homes for sale over $300k as under $300k. That seems so heavily weighted on the top end I don't understand how a builder can justify building new, 4,000+sqft McMansions, but sure enough they keep cranking them out.