Zestimate?

A Zestimate is a generalization of price based on data gather in the area.  It's a little like guessing the value of a home from a satellite.  It doesn't take into account many factors such as Condition, Upgrades, Age, etc.  As a Real Estate professional I have found Zestimates to be very close to real value at times but many times I find it completely inaccurate.  To explain my point further Zestimate may base it's opinion on neighboring home sale that are in stellar condition while the subject is gutted out. On the other side of the spectrum it may base it's opinion on Defunct properties when subject is in stellar condition.  With all that said it is a good indicator of general price in the area base on a systematic guess but in no way takes the place of a Appraisal.