Underestimating the Landing

From the Wall Street Journal:

As Data Point to Slowdown, Housing Market May Land Harder Than Economists Predict

Home prices in some parts of the country are falling. Builders are scaling back. Bubble or not, the biggest housing boom in recent U.S. history is coming to an end.

Now here is the big question: How bad will the aftermath be? At this point, most economists expect a "soft landing," a gradual decline that won't derail the nation's economic expansion, now in its fifth year.

But there is a good chance they are being too optimistic. The boom has depended heavily on the upbeat psychology of consumers, builders and lenders. As moods swing, the landing could be very hard indeed.

"We could be underestimating the dark side," says Mark Zandi, chief U.S. economist at Moody's Economy.com and among the first to seek to quantify the housing boom's broader effects. "Euphoria could turn into abject pessimism very quickly."
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Economists, however, have few clues on which to base their predictions. Today's housing boom differs radically from its predecessors. For one, it has been bigger and longer-lived. House prices are still more than twice the level of 1991, when the boom began. Even after the recent decline, June's rate of home sales is 40% above the 20-year average.

Much of the recent increase has been driven by an unprecedented flood of cash into U.S. capital markets. Global demand for U.S. mortgage bonds, competition among big national lenders and the advent of exotic loans have made it easier than ever to borrow money to buy a house -- and to turn rising home values into cash.
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But that isn't all. Economists can't quantify some risks, including the biggest: the chance that a sharp drop in house prices -- what economists call a "disorderly downturn" -- would leave many homeowners owing more on their mortgages than their homes are worth. If that led to a wave of foreclosures and losses on riskier mortgage-backed securities, banks and investors could get spooked and cut back on all kinds of lending -- a move that could snuff out economic growth.

"For me, the risk of a disorderly downturn is the greater one," Mr. Hatzius says. "That's a scenario that people would worry about a lot, because typically recessions are the result of a general unwillingness to lend."