Seasonal factors play an important part in the monitoring housing prices, pushing up prices during the high traffic months of the spring and summer and pulling them down in the cold of the fall and winter.

The Case-Shiller data on home prices was released on Tuesday. When seasonally adjusted, the data points to an extended price recovery, at plus 0.3 percent in December vs. 0.2 percent gains in the prior three months going back to September. These results point to a building on top of last years mid-year gains.

City-by-city, the data shows consistent improvement continuing to build in the West and the Midwest. The narrower 10 City Composite Index also accelerated to a gained 0.3% following three months of only a 0.2% increase.

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