Many of you have probably been to Zillow and used their “Zestimate” feature to get an instant home value of your property or a property that you want to buy. While Zestimates might be a good starting point for home value, they should certainly not be trusted for accuracy. In fact, Zillow essentially states that on their own website. From our experience, a Zestimate can be anywhere from 5% to 20% off a home’s true value.