Which board is NOT part of USPAP and is considered reference material only?

The Advisory Opinions are not part of USPAP (Uniform Standards of Professional Appraisal Practice) itself but serve as reference material for appraisers. These opinions provide guidance on how to apply standards and approach certain situations in the appraisal process, but they do not constitute a formal part of the standards themselves. Advisory Opinions aim to clarify and assist appraisers in understanding and implementing USPAP effectively, but they do not have the same authoritative status as the standards outlined in USPAP.

In contrast, the Appraisal Standards Board sets the actual standards, the Appraisal Practices Board develops guidance on recognized appraisal practices, and the Appraisal Qualifications Board establishes the qualifications needed to become an appraiser. Each of these boards plays a crucial role in the appraisal industry, but the Advisory Opinions are solely intended as advisory and support documents, making them distinct from the core components of USPAP.