A few quotes from the article above:
...There’s a simple measure of sanity in housing prices: the ratio of median home price to income. Historically, it runs around 3 to 1; by late 2004, it had risen nationally to 4 to 1. “All these people were saying it was nearly as high in some other countries,” Zelman says. “But the problem wasn’t just that it was 4 to 1. In Los Angeles, it was 10 to 1, and in Miami, 8.5 to 1. And then you coupled that with the buyers. They weren’t real buyers. They were speculators.” Zelman alienated clients with her pessimism, but she couldn’t pretend everything was good. “It wasn’t that hard in hindsight to see it,” she says. “It was very hard to know when it would stop.” Zelman spoke occasionally with Eisman and always left these conversations feeling better about her views and worse about the world. “You needed the occasional assurance that you weren’t nuts,” she says. She wasn’t nuts. The world was.”…
…He’d call over to a big firm and ask for a list of mortgage bonds from all over the country. The juiciest shorts—the bonds ultimately backed by the mortgages most likely to default—had several characteristics. They’d be in what Wall Street people were now calling the sand states: Arizona, California, Florida, Nevada. The loans would have been made by one of the more dubious mortgage lenders; Long Beach Financial, wholly owned by Washington Mutual, was a great example. Long Beach Financial was moving money out the door as fast as it could, few questions asked, in loans built to self-destruct. It specialized in asking home*owners with bad credit and no proof of income to put no money down and defer interest payments for as long as possible. In Bakersfield, California, a Mexican strawberry picker with an income of $14,000 and no English was lent every penny he needed to buy a house for $720,000...