If an appraiser is truly engaging in intentional fraud or criminal acts, then, sure, that appraiser is probably better off without a work file. That appraiser might want to discard their files on day 1 -- because a record keeping violation is trivial in comparison. But this is not the kind of situation that affects 99%+ of appraisers who become defendants in lawsuits about their work. The more typical scenarios involve accusations that the appraiser's value wasn't supported because some review appraiser 7 years down the road opines that the appraiser should have use this sale or that sale instead or opines that the appraiser negligently misstated information about the property. A decent work file helps the defendant appraiser defend that kind of legal claim far more often than the appraiser is hurt by something in the file.
Leaving aside the simple hope that there is support for an appraisal in the work file, here is a recent case illustrating another reason why good appraisers with decent work files are better off retaining them:
The FDIC sued an appraiser. As is the case in most FDIC professional negligence cases, the appraisal was more than 5 years old. The appraiser had thrown away his work file, including the report, after the USPAP period. In his defense, the appraiser insisted that the report he was being sued over had been changed by someone after it left his hands -- that the value had been changed. If that could be proven, the case would easily be defended -- and indeed the FDIC has dismissed other cases when forgery of the appraisal was shown. However, this appraiser could not prove it because he had no records. After 18 months of litigation and with no apparent hope of producing evidence of the forgery, the appraiser (not insured by our company) settled for more than $500,000.
In more typical cases, a decent work file contains things that are highly relevant to defense of an appraiser against professional liability, such as: communications with the client showing the client's knowledge of an issue or condition, photos (that may not be in the report) showing the property's condition at the time of appraisal, blue prints or plans relied on by the appraiser, and information given to the appraiser by the client or third parties. And, of course, we can also hope that a decent work file contains support for the actual appraisal -- which is the case for most appraisers.
-- Peter Christensen, LIA's general counsel