DATA COVERAGE AND ZESTIMATE ACCURACY
Zillow's accuracy has a median error rate of 4.3%. This means half of the home values in the area are closer than the error percentage. For example, in Seattle, Zestimate values for half of the homes are within 5.4% of the selling price, and half are off by more than 5.4%.
To improve Zestimate accuracy, we allow homeowners to edit their home facts and then we incorporate this information into our Zestimate calculations.
Be aware that in some areas, we might not be able to produce a Zestimate at all, but we do have some basic information on the homes. The tables below show you where we have Zestimates and other home information.