2.7 Percent of American Homes are Vacant

"The typical data point used to describe vacant homes is the Home Ownership Vacancy Rate. In the US, that number is 2.7% for owner occupied houses and 9% for rental properties, apartments, etc....There were 18.4 million vacant homes in the U.S. in Q4 '10 (11 percent of all housing units vacant all year round), which is actually an improvement of 427,000 from a year ago." [The Big Picture via Boing Boing]