Peter Krasilovsky reports on Zillow:

Another challenge has been to ensure the quality of Zillow’s Real Estate data. Most of the data comes from county courthouses, and accuracy is very high. More than 62 percent of house prices are within 10 percent of their “Zestimate,� said Rascoff.

I’ve often wondered if Zillow isn’t the Alexa of real estate pricing: Interesting, but ultimately not business-decision worthy. Today, however, I’m ready to believe IT IS VERY ACCURATE. I just checked the estimate on our house, which we’re still desperately trying to sell, and Zillow says our value has increased $15,000 in the past 30 days! Eeee-Haw!