[quote=moneymaker]eppraisal is even further off than Zillow. [/quote]

Eppraisal estimates the value of my house about 10% higher than Zillow. Both estimates are high but Zillow appears to be a little more realistic over time.

I think all of these automated valuation services can be manipulated to some degree. For example, a neighbor listed their house for quite a bit ‘above market’ late last year. Zillow seemed to pick up their listing as a data input and our whole neighborhood got a bump in valuation.