Five years ago, about eighty American cities had an average starter-home price of $1 million. Today, it’s 242 cities. A starter home runs seven figures in three times as many places today as it did before the pandemic. Zillow published the count recently. Half the states now have at least one million-dollar starter home city. California alone, unsurprisingly, has more than one hundred. In the studies, a “starter home” is just the bottom third of houses in an area. What that means is the first rung, the small house on a small lot or shared small lot, where you have your first kid, build...