The sales of new single-family houses fell slightly in July to a seasonally adjusted annual rate of 298,000. The U.S. Census Bureau and the Department of Housing and Urban Development issued the estimated figure on Tuesday and at the same time revised the June new-home sale rate down to 300,000 from the earlier estimate of 312,000. The July figure is a decrease of 0.7 percent from the new June number but is 6.8 percent above the July 2010 estimate of 279,000 new homes sold. There were an estimated...