Days on Market, Relisting, and Stale Fish

Some readers have asked lately about a recent jump in our Days on Market statistic. I thought it makes sense to explain it here. We recently did a methodology change where we increased the look-back window for watching properties.

By making this change, we more accurately reflect the actual total time on market, even for properties that have come on and off the market, especially including those that have been off the market for 30 days before being relisted.

In January 2007 we increased our look-back window. We'll now identify more properties as they've come on and off the market. Thus the big jump in our Days on Market statistic.

What we found was that in some markets, we can find a significant chunk of properties that have really been on the market for long periods and these properties were previously under-reported in our stats. We've seen a notable decline in the number of properties relisted (with the sole intention of "refreshing" a listing) in Silicon Valley since last fall when the local MLS changed its rules. In San Jose California we've observed a drop from nearly 25% of homes on the market having been relisted down to 9%. That's real progress.

Those rules however do not impact a property that for example was on the market all last summer, was pulled off over the holidays and put back on the market in January. A soon-to-be-announced Altos partner calls these properties "stale fish." We've adjusted our nets to catch more stale fish. We're still dolphin-safe though.

This change effected our the trend charts in most communities a little bit. In some areas, though, you might notice a big jump in the DoM stat that week in January 2007. This change is the reason for the jump. Inset is a snapshot of the current Days on Market trend for San Jose Homes.