…squashes its young:

Young people overwhelmingly prefer single-family houses, which represent 80 percent of home purchases nationwide for people under 35. If millennials continue their current rate of savings, notes one study, they would need 28 years to qualify for a median-priced house in San Francisco—but only five years in Charlotte and just three in Atlanta. This may be one reason, notes a recent ULI report, why 74 percent of Bay Area millennials are considering moving out in the next five years.

Regional planners and commercial chambers should indeed look to California as a model—of exactly what not to do. The state’s large metro areas are no longer hot growth spots for millennials, who are flocking to suburbs and exurbs elsewhere. Since 2010, the biggest gains in millennial residents have been in low-density, comparatively affordable cities such as Orlando, Austin, and Nashville. Ultimately, the battle for California’s future—and much of Blue America’s—will turn on how these regions meet the challenge of providing housing and opportunities to a new generation of workers and young families. A California that works only for the wealthy and well-established is not sustainable.

Something that can’t go on forever, won’t.