Joe Flacco
Elite Member
- Joined
- Jul 31, 2013
- Professional Status
- Certified Residential Appraiser
- State
- Maryland
I can't think of a scenario where 20% would be reasonable, but maybe. It's been my experience that anchor bias has a tremendous impact on these variances. One appraiser gets fixated on a sale they think is really comparable and then try to make the data 'fit'. In this particular instance, the 'real' value is somewhere between $3.3M and $3.5M.
I mean, I don't know what a $3-4 million property in that market is. In the market I work, that price range is pretty typical, and a 20% range would be unreasonable.
When the subject is better than anything that has sold in the neighborhood, then 20% range shouldn't be viewed as unreasonable. One common issue at the high-end is that if your property is better than anything in the neighborhood, you go to competing neighborhoods to find similar improvements. Then you can deal with the difference in the value of the land between the locations, but then you are still left with the unknown of if the property is over-improved for the location or specific lot. Just the fact that nothing has sold like it in the neighborhood isn't evidence of an over-improvement.
You can even look at real estate agents at the high-end. Maybe 50% of the time, they nail the price within 10%. The other 50% of the time, they might be off by 20%-50% from where they started. You have to be a magician to be right within 10% all the time.