Non-Appraisers Valuation Never Appropriate
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Here is a NAR deck on AVMs (automated valuation models).
Here are some recent survey results that show more than half of the respondents indicated, it is either NEVER appropriate or NOT SURE if it is appropriate for a non-appraiser to perform a valuation on a home.
So the jury is still out for a third of respondents but a third are absolutely sure it is inappropriate. One can infer that appraisers have an opportunity to convey what AVMs really are to the public.