WASHINGTON — Consumers and businesses went on a big-ticket spending spree in July, sending home, car and equipment sales soaring by the largest amount in years.

WASHINGTON — Consumers and businesses went on a big-ticket spending spree in July, sending home, car and equipment sales soaring by the largest amount in years.

The sales, detailed in two government reports Wednesday, confirmed a subtle but marked shift in confidence about the economy. New home sales jumped almost 10 percent from June, while orders for long-lasting goods like appliances, planes and computers rose nearly 5 percent in July, the third increase in the past four months.

"It looks like we've hit bottom and we're now slowly trying to dig our way out," said Nigel Gault, chief U.S. economist at IHS Global Insight.

Still, it remains unclear whether the growth can be sustained. Though the increases in housing sales and manufacturing last month were dramatic, they came from extraordinarily low levels and were fueled by temporary government programs like Cash for Clunkers and tax credits for home sales. Most economists now agree the recession that began in December 2007 has ended or is ending.

Sales of new homes surged to a seasonally adjusted pace of 433,000 in July from 395,000 in June, the Commerce Department said, providing another sign the housing market is bouncing back from the historic bottom reached early this year. Driven by falling prices, the fourth-straight monthly increase was greater than expected. Sales haven't risen so dramatically since February 2005.

Meanwhile, orders for transportation equipment, including cars, car parts and airplanes rose more than 18 percent, helping to drive the durable goods data.

A huge jump in aircraft orders accounted for most of that gain. Also, auto production improved last month as General Motors and Chrysler reopened many plants that were shut in May and June while the companies restructured and emerged from bankruptcy protection.

The improved outlook could help further boost the economy. As home sales rise, builders will gradually need to hire more workers to pour foundations and pave roads, reversing the trend that saw 1.4 million industry jobs shed since the recession began.

"These are crucial elements of a sustainable recovery," David Resler, chief economist at Nomura Securities, wrote in a research note.

Construction job losses have slowed recently, with 76,000 lost in July, about half January's level.

Builders and real estate agents fear that the end of the tax credit could reverse the upward trend. Sen. Johnny Isakson, R-Ga., has introduced legislation to extend it for another year, raise it to $15,000 and make it available to all buyers.

If that doesn't happen, Isakson said in an interview, "the little improvement we have from awful to terrible will go away and it will go back to awful again."

Some builders are already seeing sales dip.

At A.F. Sterling Homes in Tucson, Ariz., sales fell in July because the builder said it couldn't guarantee the homes could be finished in time to qualify, said Randy Agron, the company's vice president.

"The real estate market is really a fragile thing," he said. "It's not the right time to take (the tax credit) away."

There were 271,000 new homes for sale at the end of July, down more than 3 percent from May. At the current sales pace, that represents 7.5 months of supply, which means builders have scaled back construction to the point where supply and demand are coming into balance.