“I dance like people wish they weren't watching.” Someone sure is watching, and counting, empty houses. Lack of available housing inventory has helped keep housing costs high throughout many of the nation’s big cities, but nearly 5.5 million homes sit vacant across the nation’s 50 largest metropolitan areas. The average vacancy rate across these 50 metros is 7.22 percent, with New Orleans (13.9 percent), Miami (12.7 percent), and Tampa (12.2 percent) having the highest vacancy rates. Vacancy rates are lowest in Minneapolis, Austin, and Washington, D.C., the ...