WASHINGTON — Sales of new homes surged 9.6 percent in July, another sign the housing market is climbing back from the historic bottom it reached early this year. The monthly increase was greater than expected and the fourth in a row. It was spurred by a decrease in the price of homes.

The Commerce Department said this morning sales rose to a seasonally adjusted annual rate of 433,000 from an upwardly revised June rate of 395,000. Sales are now up more than 30 percent from the bottom in January, but are still off from the frenzied peak four years ago.

The median sales price of $210,100, however, was down slightly from $210,400 in June and was off 11.5 percent from year-ago levels. Prices are still up from March's low of $205,100.

Last month's sales pace was the strongest since September and exceeded the forecasts of economists surveyed by Thomson Reuters, who expected a pace of 390,000 units.

In an effect similar to the government's "Cash for Clunkers" program to stimulate auto sales, homebuyers are rushing to take advantage of a federal tax credit that covers 10 percent of the home price, or up to $8,000, for first-time owners.

Home sales must be completed by the end of November for buyers to qualify.