They are actually getting better in some areas. It's the areas with unique/high end custom/rural, or areas with little sales data, where they are not that reliable.I don't have your expertise but I share your skepticism especially on their "forecasts" of what prices will do over the next year. I'm guessing they just extrapolate out what prices did over the previous year, which is next to useless in and of itself, even before you take into account which properties they're using to extrapolate and if they match your property type at all. "Single family home" can cover a pretty broad spectrum of housing types even in a small area.
They are super helpful for finding your own comparable sales however, especially when you're looking for something specific like waterfront or view properties. I've found the graphic interface on Zillow allows me to do a better job than many (but certainly not all) in your profession finding comps that are actually comps not just something within a certain distance and number of square feet. Having a monopoly on that data in an easily accessible form for so many years unfortunately made many appraisers just plain lazy. I am curious if you have any tips for how to find a good appraiser versus one who just plugs and chugs with their online comp tool?
I will use them on re-fi order's. I look up the Zillow estimate and then look at the comps. If the comps don't support the Zillow #, I will usually turn the order down. Once an owner sees the Zillow figure, and they all look at it, they think that's the value. I had one young couple that were looking at the Zilllow # every week. Well, Zillow had their GLA 30% higher than what it was. Nothing I could say would convince that it was a case of GIGO.
