If the builders knew why didn't Barry and Barney?

"Approximately $216 billion in subprime and Alt-A mortgages will reset for the first time this year, which could ultimately push 3 percent of all outstanding mortgage debt into default. As a result, a large number of households will return to the renter pool throughout 2008. To compensate, builders are expected to expand existing apartment inventory by 1.1 percent, or more than 100,000 new market-rate units." Buildings, Annual Industry Forecast, 2008