TWO THINGS TO UNDERSTAND ABOUT ZILLOW’S ACCURACY RATE
1) Median makes all the difference: Zillow says their median error rate is 5% for the United States. That sounds impressive, but we have to realize this is a MEDIAN error rate, which means the Zestimate is within 5% of the purchase price only half the time. So Zillow’s slogan could be, “We’re within 5% half the time.” But that doesn’t sound as polished as “Our median error rate is 5%”.
2) Zillow uses the most recent Zestimate: This is such an important point – even if it feels a little technical. I have an example to help show what I mean too. Zillow states “Zestimate accuracy is computed by comparing the final sale price to the Zestimate on or before the sale date.” Let me show you why this matters.