USPAP is the Uniform Standards of Professional Appraisal Practice. USPAP is published and maintained by the Appraisal Standards Board (ASB) of the Appraisal Foundation, a non-governmental entity charged by Congress with promulgating appraisal standards.

Every appraiser is expected to follow USPAP guidelines in the completion of every appraisal. As USPAP changes every appraiser must complete Continuing Education periodically to relearn the basics and become familiar with new Advisory Opinions and annual changes to USPAP. USPAP may be considered the Bible of appraisal practice.