Castleman is in a unique position to know. As the founder and CEO of a company called Metrostudy, he’s spent more than three decades tracking real-time data on the country’s inventory of new homes. Each quarter he dispatches 500 inspectors to literally drive through 45,000 subdivisions from Baltimore to Sacramento. The inspectors examine 5 million finished lots, one at a time, and record whether they contain a house that’s under construction, one that’s finished and for sale, or a home that’s sold. Metrostudy covers 19 states, or around 65% of the U.S. housing market, including all the ones hardest hit by the crash: Florida, California, Arizona, and Nevada. The company’s client list includes virtually every major homebuilder and bank — from Pulte (PHM) and KB Home (KBH) to Bank of America (BAC) and Wells Fargo (WFC).
The key figures that Metrostudy collects, and that those clients prize, are the number of homes that are vacant and for sale in each city, and the number of months it takes to sell all of them. Together those figures measure inventory — the key metric in determining whether a market has a surplus or a shortage of new housing.