The Zestimate's accuracy depends on location and availability of data in an area. Some counties have deeply detailed information on homes such as number of bedrooms, bathrooms and square footage and others do not. The more data available, the more accurate the Zestimate.
Data Coverage and Zestimate Accuracy
Nationally, the Zestimate has a median error rate of 4.5%, which means half of the Zestimates in an area are closer than the error percentage and half are farther off. For example, in Seattle, Zestimates for half of the homes are within 4.4% of the selling price, and half are off by more than 4.4%.
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.
You can also view the Zestimate Accuracy Chart for more information.