People don’t get it… Zillow is not supposed to replace an appraiser or be “accurate”. It has some hard facts that are very useful: sale history, nearby comps, square footage, year built, pictures from many angles, etc. That alone makes it very valuable. The “zestimate” is an educated guess based on a formula they compute based on a number of factors. What surprises me is how so many people are “shocked” that zillow estimates are off. Of course they are off! Do you expect Zillow to appraise each house individually? There are millions of houses in their system, and “values” are simply as crunched by a computer. Is that so hard to understand?