Odd. My house is valued at $330k on zillow, would sell for $420K+ in a few days.
FWIW, we have had a high frequency of home sales in the past year, so that might help. I just looked up my previous house (sold 5 years ago), and Zillow is saying $740K, which I am pretty sure is massively overvalued, however the street it is on, and general area, have a fairly low turnover, so less recent data.
I drive an old Honda Civic and my neighbors all have Tesla, Porsche, etc.
...I gave up on my first.