Margin of error in Zillow and Redfin value estimates

For all my Zillow and Redfin loving friends. Please read! The margin of error in San Juan County is one of the largest in the state for these AVM’s to be accurate. Recently, Zillow told me my own home dropped in value by 37.5% in one month, using comparable sales from other counties (Whatcom, Lummi Island) and properties that were not even remotely similar in location, view, site or size.

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