eppraisal is even further off than Zillow. Just for the fun of it I put in a house 2 doors down and eppraisal says it is worth less than half of what it sold for in December of 2013. I do believe Zillow can be wrong but I have no idea how to manipulate it. Zillow says my home has been falling as of late even though the last 2 houses sold on my block went for what I thought were ridiculously high values. Go figure!