Home prices continued their post-tax-credit swoon in November and are moving close to the Case-Shiller definition of a double-dip decline, Standard & Poor's reported Tuesday.

The S&P/Case Shiller Home Price Indices showed broad decline across the U.S., with the the 10-City Composite down 0.4% and the 20-City Composite off 1.6% from their November 2009 levels. Prices fell in 19 of 20 MSAs and both composites (-0.8% and 1%, respectively) in November from October. Only four MSAs--Los Angeles, San Diego, San Francisco and Washington DC--showed year-over-year gains.

Eight markets--Atlanta, Charlotte, Detroit, Las Vegas, Miami, Portland (OR), Seattle and Tampa--hit their lowest levels since home prices peaked in 2006 and 2007, meaning that average home prices in those markets have fallen even further than the lows set in the spring of 2009. A home in Detroit is now worth 67.26% of its price of January, 2000. Atlanta (index 100.67), Las Vegas (100.59) and Cleveland (100.12) are now virtually flat with January 2000, and Phoenix, with an index of 104.85, is not far behind.

Atlanta, Chicago, Detroit and Portland led the year-over-year declines with -7.9%, -7.6%, -7.1% and -7% drops, respectively. Sequentially, those markets were down 2.5%, down 2.2%, down 2.7% and down 1.6%, respectively.

The news for home sellers was not much better elsewhere. Boston, now with an index of 152.76, lost 1% from October and is 0.8% behind November, 2009.Charlotte lost 0.4% sequentially and 4.3% year-over-year to land at an index of 113.61. Dallas dropped 1.1% and 4.2%, respectively, to 114.88. Denver was down 1.2% and 2.5% to 125.02. Los Angeles dropped 0.4% but remained 2.1% ahead of November, 2009 with an index of 173.28. Miami took a 0.2% hit sequentially and was 3.5% below November, 2009 with an index of 143.81.Minneapolis lost 2.1% month-to-month and was down 4.4% year-over-year and was at an index of 118.80.

New York dropped 1% from October to an index of 169.75, 1.7% behind November of 2009. San Diego, the only market to post a gain in October, added 0.1%, putting it 2.6% ahead of November, 2009 with an index of 160.08. San Francisco lost 1.2% sequentially but managed to stay 0.4% ahead of November,2009 with an index of 137.23. Seattle droped 1.1% and 4.7% to 141.57. Tampa dropped 0.8% and 4% to 134.05. Washington, with an index of 185.42, lost 0.1% in October but remained 3.5% ahead of November, 2009.

"With these numbers, more analysts will be calling for a double-dip in home prices," said David M. Blitzer, chairman of the index committee at S&P.He said S&P would consider a double dip to have occurred when and if the10- and 20-City Composites set new post-peak lows, pointing out that they are now only 4.8% and 3.3% above their April 2009.

"Certainly eight cities setting new lows, and with the only positive news concentrated in southern California and Washington DC, the data point to weakness in home prices," he added.

Learn more about markets featured in this article: Los Angeles, CA.