As one of the founding members of the National Valuation Standards Institute I have trained over 1200 agents on how to complete a Broker Price Opinion on single family homes. Personally I'm proud to say that I have never been more than 2% different from the official appraisal for every home I've sold. If you have a question about the value of a property feel free to contact me at any time.
San Diego Real Estate Veterans
It's quite possible, just depends on the amount of data available to the appraiser, and what it is that is being appraised. A track home or a condo, where there might be many very similar, nearly identical, units, with recent sales comps, will have less variation than say a $4million custom home on Mt. Soledad.
Also, appraisals are time-dependent, and are an opinion of value on the day they are performed, so an appraisal done months later might reflect differences in the market, which can be substantial in a hot market, or if better data (i.e. comps) becomes more available.
Thanks for the great question, always available if you have others.
Actually sometimes it could happen for many reasons. One significant reason for instance is when the appraiser takes into consideration the distressed properties. One has to find out the reasons.
Hope this would help you.
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