If my math is correct the average home cost in Dec, 2005 was $609,396. (Value of closed sales/number of closed sales)
Whereas, the average in Dec, 2006 was $605,539. So, Dec 05 was $3.8K higher than 06.
Comparison between 05 and 06:
January 05 is $6,818 per unit less than 06
February 05 is $45,155 per unit less than 06
March 05 is $37,242 per unit less than 06
April 05 is $30,479 per unit less than 06
May 05 is $31,109 per unit less than 06
June 05 is $3,881 per unit less than 06
July 05 is $7,122 per unit more than 06
August 05 is $29,428 per unit more than 06
September 05 is $824 per unit more than 06
October 05 is $31,952 per unit more than 06
November 05 is $485,235 per unit more than 06
December 05 is $3859 per unit more than 06
I think some of the monthly data may be skewed. Look at
November 05/06 numbers (unless I made a mistake with the spreadsheet). Overall, 05 costs per unit per month, were higher than 06, until July 06 forward.