Zillow zestimates should not be lookef at when buying or selling. I've seen the zaestimate for a home decline by more than $130k in a 30 day period! When contacting them they claim this was due to a change in the methodology they use to come up with zestimates! Not only is it irresponsible to allow such unreasonable volatility but they don't even take care to come even close to the true estimated value of a home. It is mind boggling to me why anyone would take this company seriously! There should be a zero rating allowed.