The REAL cost for housing is more accurately reflected ny the cost for housing plus transportation. This combined cost is what you need to get to work, get essential goods, etc. The irony, closely entwined with the above three points, is that those areas which have least expensive housing usually have the highest associated transportation costs. For single family, it's the drive till you can afford principle where someone finds the type of home they want... but the closer in and therefore more desirable (generally speaking) bedroom communities have too high a cost. Also, there is still lent up demand for urban living and therefore there are price premiums from 20% to over 100% price premiums (you read that right, more than double) for land in urban, walkable and mixed use neighborhoods, even more so if combined with good transit connections. So the people that have the least and could most use an apartment (or small home) that is within close proximity to work either by walking or transit so as not to need another car, are those who are least able to afford to live within most of those neighborhoods. Fact: If a family could go from a two-car family to a one-car, the cost savings represents $150,000 MORE in mortgage capability. You read that right, too. According to one of the most prominent experts in development, who owned and ran the world's largest firm that did/does economic and feasibility analysis and market studies for developers (Chris Leinberger of Brookings and head of GWUs real estate program, and noted author of The Option of Urbanism).