Fueled by the first-time buyer tax credit, existing-home sales skyrocketed 10.1 percent in October, according to the National Association of Realtors.

Existing-home sales –- including single-family, townhomes, condominiums and co-ops –- jumped to a seasonally adjusted annual rate1 of 6.10 million units in October from a downwardly revised pace of 5.54 million in September, and are 23.5 percent above the 4.94 million-unit level in October 2008. Sales activity is at the highest pace since February 2007 when it hit 6.55 million.

“Many buyers have been rushing to beat the deadline for the first-time buyer tax credit that was scheduled to expire at the end of this month, and similarly robust sales may be occurring in November,” explained Lawrence Yun, NAR chief economist. “With such a sale spike, a measurable decline should be anticipated in December and early next year before another surge in spring and early summer.”

Now that the tax credit has been extended and expanded, potential buyers have until April 30 to have a contract in place. “There is still a large pent-up demand that can be tapped before the tax credit expires,” Yun added. “Our recent consumer survey further shows that 13 percent of successful first-time buyers had a previous contract that was cancelled or fell through -– there likely are many more buyers who were attempting to purchase but simply ran out of time.”

Historically low interest rates also are boosting the market. “Mortgage interest rates last month were the third lowest on record dating back to 1971,” Yun noted. According to Freddie Mac, the national average commitment rate for a 30-year, conventional, fixed-rate mortgage fell to 4.95 percent in October from 5.06 percent in September; the rate was 6.20 percent in October 2008. Last week, Freddie Mac reporter the 30-year rate dropped to 4.83 percent.

NAR President Vicki Cox Golder, owner of Vicki L. Cox & Associates in Tucson, Ariz., said strong demand by first-time buyers is creating some unusual conditions. “In parts of the country, especially in Southwestern states but also in Florida and suburban Washington, D.C., we’ve been getting many reports of multiple bids in the lower price ranges with foreclosed properties getting absorbed quickly,” she said.

Total housing inventory at the end of October fell 3.7 percent to 3.57 million existing homes available for sale, which represents a seven month supply at the current sales pace, down from an eight month supply in September. Unsold inventory totals are 14.9 percent below a year ago.

“The supply of homes on the market is now at the lowest level in over two-and-a half years – we’re getting closer to a general balance between buyers and sellers,” Yun said. The relative housing inventory was last this low in February 2007 when it was at a seven-month supply.

The national median existing-home price3 for all housing types was $173,100 in October, down 7.1 percent from October 2008. Distressed properties, which accounted for 30 percent of sales in October, downwardly distorted the median price, according to NAR.

“In the second half of 2010, if home values show consistent stabilization or even a modest increase, then home sales could remain at normal healthy levels because consumers would no longer be worried about a price overcorrection,” Yun said.

He added low home prices also are contributing to extremely favorable affordability conditions. “With the abnormal drop in home prices over the past few years, the price-to-income ratio has fallen below the historic trend line,” Yun said. “This is adding to the buying power of the typical family, with affordability conditions this year at the highest on record dating back to 1970, but prices are beginning to flatten and are poised to rise next year.”

Single-family home sales rose 9.7 percent to a seasonally adjusted annual rate of 5.33 million in October from a pace of 4.86 million in September, and are 21.4 percent above the 4.39 million-unit pace in October 2008. The median existing single-family home price was $173,100 in October, down 6.8 percent from a year ago.

Existing condominium and co-op sales surged 13.2 percent to a seasonally adjusted annual rate of 770,000 units in October from 680,000 in September, and are 40.8 percent above the 547,000-unit level a year ago. The median existing condo price was $172,900 in October, which is 10.4 percent below October 2008.

Regionally, existing-home sales in the Northeast rose 11.6 percent to an annual level of 1.06 million in October, and are 27.7 percent higher than October 2008. The median price in the Northeast was $235,400, down 2.6 percent from a year ago.

Existing-home sales in the Midwest surged 14.4 percent in October to a pace of 1.43 million and are 28.8 percent above a year ago. The median price in the Midwest was $146,600, a gain of 1.1 percent from October 2008.

In the South, existing-home sales rose 12.7 percent to an annual level of 2.30 million in October and are 25.7 percent higher than October 2008. The median price in the South was $151,100, down 6.3 percent from a year ago.

Existing-home sales in the West increased 1.6 percent to an annual rate of 1.31 million in October and are 12.0 percent above a year ago. The median price in the West was $220,200, which is 14.7 percent below October 2008.