i feel that zillow is overvaluing houses. houses on sale priced well below zillow value are still sitting on the market.
This one for example :10151 PRAIRIE FAWN DRIVE in rancho bernardo.
Zillow value $804,741 – $1,010,397, zestmate $894,157
now is being offered 740,000 down from 775,000. i do not know when they dropped the price but still is not selling.