Now that the gilded forecasts have proved spectacularly wrong, homeowners don't know what to think about real estate's future. The dizzying rise sure didn't make sense. And the sudden slump doesn't seem any more logical. How can you make reasonable financial plans for the future if you have no idea what your house is worth?
In most markets people won't lay out much more in monthly costs to own a house or condo than they would to rent a similar property unless they expect a huge profit when they sell. Indeed, speculators chasing quick profits did a lot to inflate the recent bubble.
But once the fervor fades, prices must fall to restore their normal, long-term relationship with rents. Rents exercise a kind of inevitable gravitational pull on prices. The ratio of prices to rents "behaves much like price/earnings ratios for stocks," says Yale economist Robert Shiller. "Like P/Es, price-to-rent ratios are mean-reverting." In other words, while prices soar from time to time, sending the ratio to exceptional heights, sooner or later the relationship is bound to return to its historical average.