Under what condition can a Supervisory Appraiser affix a Trainee Appraiser's signature to an appraisal report?

A Supervisory Appraiser can affix a Trainee Appraiser's signature to an appraisal report specifically when authorized to do so in a particular assignment. This practice ensures that the Supervisory Appraiser has evaluated the work and is taking responsibility for the accuracy and compliance of the appraisal with relevant standards. Such authorization typically comes from established protocols within the supervision relationship and reflects the legal and ethical obligations that appraisers have in the industry.

Other options do not provide a basis for affixing a signature. For instance, simply because a Trainee may request it does not imply authority or responsibility. The validity of the report is not sufficient alone for affixing a signature—there must be formal authorization tied to a specific assignment. Presence of the Supervisory Appraiser during the appraisal or report preparation does not grant the automatic right to use the Trainee's signature, as the signature must reflect an official capacity of agreement or oversight established in advance.