California, the land of golden dreams, has become America’s worst housing nightmare.

Recent wildfires have only heightened the stakes for a state that can’t seem to build enough new homes.

The median price for a house now tops $600,000, more than twice the national level. The state has four of the country’s five most expensive residential markets—Silicon Valley, San Francisco, Orange County and San Diego. (Los Angeles is seventh.) The poverty rate, when adjusted for the cost of living, is the worst in the nation. California accounts for 12% of the U.S. population, but a quarter of its homeless population...

California, the land of golden dreams, has become America’s worst housing nightmare.

Recent wildfires have only heightened the stakes for a state that can’t seem to build enough new homes.

The median price for a house now tops $600,000, more than twice the national level. The state has four of the country’s five most expensive residential markets—Silicon Valley, San Francisco, Orange County and San Diego. (Los Angeles is seventh.) The poverty rate, when adjusted for the cost of living, is the worst in the nation. California accounts for 12% of the U.S. population, but a quarter of its homeless population...