How was Zillow Home Value Index calculated?

Profile picture for Aces284
I want us the Zillow Home Value Index but want to have some confidence in the data set that support the Index. For example, how many homes are in the index, when the index goes back 5 years, where did Zillow get the data to input into the model. Is Zillow in any way associated with the local Association of Reators, or at least buying data from them?
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October 25 2010 - Downtown North
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Answers (1)

Profile picture for SoCal Appraiser
READ this entire article on what a ZIllow Home Index is.

The HOME INDEX depends on how much data you have. Its exactly the same data appraiers, banks, lenders, etc use - Zillow just shows it for free.

MORE data, BETTER accuracy, and vice versa. URBAN areas better, rural areas - not so much. SAME accuracy as appraisal data as its the same data.

Now thats for SOLD data. Active data is obtained from local and national MLS sources. MLS data must be opted in by the owner/listing agent of the home for sale, at some point, for Zillow to use it.



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October 26 2010
 

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Profile picture for Vince Curtis
QuestionHow was Zillow Home Value Index calculated?
  • Latest answer by Vince Curtis
  • October 26 2010
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