There is statistic this report that household sizes are growing. Meaning that more people are moving in together and that's decreasing the demand for housing. Is it temporary? It's hard to tell, but the economy is bad, so it might be awhile before household size shrinks.
Read it allHouseholds had been getting smaller over the past decades, despite population growth. That was great for housing, because it meant more demand. "A one tenth of a percent increase in people per household would wipe out three years worth of population- and immigration-driven household growth," according to Green Street Advisors. That appears where we're headed.