We consider the use and impact of distressed properties as comparables in residential appraisals. First, we describe the incidence of their use and their relative comparability; second, we estimate their impact on the appraisal value itself; and third, we consider their impact on the probability that the appraisal is below the proposed transaction price. We find, generally, that distressed comps are largely good matches to their subject properties, which suggests that they are not necessarily used as a last resort. We find that they are not a drag on appraised value because appraisers learn to make the right adjustments over time. The use of distressed comps is associated with a higher probability of a belowprice appraisal due to the increased spread of appraisals around the contract price, particularly for higher priced homes. Overall, the use of distressed comps increased the uncertainty in the valuation process, but appraisers learned the appropriate adjustments over time.
INTRODUCTIONAccurate appraisals are important to the transfer of property. Real property, such as single-family homes, are traded infrequently, and given the heterogeneity of each unit (as embodied in the property's unique set of characteristics), no immediate evaluation is available, as there would be for more homogeneous products. Appraisals are particularly important to the suppliers of mortgage credit. Without credit, most homebuyers would not be able to finance or refinance a home purchase, but the lender's underwriting standards generally require that an independent appraisal be performed, and this appraisal is crucial to the extension of credit to the purchaser. To obtain