Here's my experience. Listed our property April 1,2016 at $479k. Sold August 4,2016 at $475k. Zillow helped by creating exposure for our home. Zillow hurt through it's "Zestimates." Zillow's Zestimates kept downgrading the price for our home, constantly telling prospective buyers that it wasn't worth the asking price. Ouch! By the time we sold, the "Zestimate" had our property valued at $283k. That hurt. Zillow does-not-have-a-clue about the worth of your property.