Blame Urban Planning

The key to making a housing bubble is to give cities control over development of rural areas — a step that is often called “growth-management planning.” If they have such control, they will restrict such development in the name of stopping “urban sprawl” — an imaginary problem — while their real goal is to keep development and its associated tax revenues within their borders. Once they have limited rural development, they will impose all sorts of conditions and fees on developers, often prolonging the permitting process by several years. This makes it impossible for developers to respond to increased housing demand by stepping up production.

In contrast, when cities do not have control of rural areas, developers can step outside the cities and buy land, subdivide it, and develop it as slowly or rapidly as necessary to respond to demand. The cities themselves respond by competing for development — in other words, by keeping regulation and impact fees low. The Houston metro area, for example, has been growing at 130,000 people per year, yet it was readily able to absorb another 100,000 Katrina evacuees with virtually no increase in housing prices.

Before 1960, virtually all housing in the United States was “affordable,” meaning that the median home prices in communities across the country were all about two times median-family incomes. But in the early 1960s, Hawaii and California passed laws allowing cities to regulate rural development. Oregon and Vermont followed in the 1970s. These states all experienced housing bubbles in the 1970s, with median prices reaching four times median-family incomes. Because they represented a small share of total U.S. housing, these bubbles did not cause a worldwide financial meltdown.

In the 1980s and 1990s, however, several more states passed laws mandating growth-management planning: Arizona, Connecticut, Florida, Maryland, Rhode Island, and Washington. Massachusetts cities took advantage of that state’s weak form of county government to take control of the countryside. The Denver and Minneapolis-St. Paul metro areas adopted growth-management plans even without a state mandate. As a result, by 2000, prices of nearly half the housing in the nation were bubbling to four, six, and in some places ten times median-family incomes.

In the meantime, Congress gave the Department of Housing and Urban Development (HUD) oversight authority over Fannie Mae and Freddie Mac. While this was supposedly aimed at protecting taxpayers, Congress knew that HUD’s main mission is to increase homeownership rates, and Congress specifically pressured HUD to increase homeownership among low income families. So HUD responded to the housing bubble by directing Fannie and Freddie to buy increasingly high percentages of mortgages made to low income families, eventually setting a floor of 56 percent. This led Fannie and Freddie to significantly increase their purchases of subprime mortgages, which legitimized the secondary market for such mortgages.

Though everyone knows that the deflation of the housing bubble is what caused the financial meltdown, few have associated the bubble itself with land-use regulation. Back in 2005, Paul Krugman observed that the bubble was caused by excessive land-use regulation. Yet nowhere in his current writings does he suggest that we deregulate land to prevent such bubbles from happening again. Such suggestions have come only from the Cato Institute, Heritage Foundation, and a few other think tanks.

We know that if the regulation is left in place, housing will bubble again — California and Hawaii housing has bubbled and crashed three times since the 1970s. We also know, from research by Harvard economist Edward Glaeser, that each successive bubble makes housing more unaffordable than ever before — and thus leaves the economy more vulnerable to the inevitable deflation. This is because when prices decline, they only fall about a third of their increase, relative to “normal” housing, before bottoming out.