According to Richard Florida (on
www.theatlanticcities.com about a year ago), when the recession hit and we stopped building anything, we built up such a backlog of demand for housing among millenials - who tend to want an urban lifestyle, compared, at least, to previous generations - that even if all we built was urban housing from now on, we won't catch up for something like 30 years. With the economy picking up, all those people who had roommates over the past few years will want their own places. Add in the number of people coming of age who want to move out of their parents', and I think the market can handle a lot of new housing. The question is whether it can handle housing as expensive as this is likely to be.