Housing: 21 Percent of U.S. Housing Markets Now More Expensive Than They’ve Ever Been

RealtyTrac found that several markets in the U.S. show early warning signs of a bubble – where prices overinflate and eventually decline.

In 475 counties with a combined population of more than 221 million, or 70 percent of the total US population, 98 counties (or 21 percent of all counties analyzed) were less affordable than its historical average of affordability. These counties include Los Angeles County, Calif., Middlesex County, Mass., and the Houston metro area in Texas.

Read more on RealtyTrac.