Yesterday, commenter Squeezed supplied us with a link to this chart on housingwatch:
Housingwatch
It shows a median price drop from $369,000 to $332,900 or a 10% drop this year. Heading out to the homepage of the site, I found the following disclaimer/methodology:

These are asking prices and not final sale prices of homes in various cities and their surrounding regions. Final sales prices can be higher or lower than asking prices depending on factors such as market conditions, or the needs of the buyers and sellers involved in the real estate transaction. Data is taken from MLS data sources. We are not responsible for any errors and/or erroneous data.

They are looking at listing prices, not sales prices. RMLS looks at sold prices. Two sources of “prices” with different results. RMLS data reports:

Average Sales Price for February, 2007 – $326,700
Average Sales Price for February, 2008 – $342,600
Median Sales Price for February, 2007 – $279,000
Median Sales Price for February, 2008 – $280,000
Average Sales Price Year to date for 2007 – $323,800
Average Sales Price Year to date for 2008 – $342,800

Adding another data source for the same market:Case Shiller index data for Portland (current reporting period is only through December):

March 2007 181.72
April 2007 183.55
May 2007 185.21
June 2007 185.76
July 2007 186.51
August 2007 186.00
September 2007 185.67
October 2007 185.10
November 2007 183.65
December 2007 182.47

How do we put it all together? It doesnt all make sense. Housingwatches’ median listing price was below RMLS’s median sales price in Feb 2007??? A year later the median listing price dropped 10% and there was a slight increase in median sales price? Any thoughts?