To create an equitable system, SAMA determines assessments that reflect long-term values, and avoid short-term market fluctuations. The selling price for any individual property is always subject to short-term, local market conditions, and to the negotiations of each buyer and seller.
As for fee appraisers, they also focus on immediate, actual, local market conditions, not on long-term fair value. Even their assessments, however, may not be the same as what an individual buyer and seller may agree upon when selling a property.