sdr, I agree that same home resale prices are the best data. I feel comfortable with OFHEO (the original same home resale/refinancing data set), though I know that it has weaknesses (inflated values from refinancings).
[img_assist|nid=1685|title=
Median Prices vs. OFHEO Index|desc=|link=node|align=left|width=466|height=311]
Some months ago, when I plotted the median price for a San Diego resale home (from DataQuick) vs. the median price for a San Diego same-sale/refinance home (from OFHEO), I saw no important difference.
This is why, for me, median resale home price from DataQuick works fine.
