In a mass appraisal report, the primary purpose of the signed certification is to:

In a mass appraisal report, the signed certification serves an essential role in establishing the credibility and integrity of the appraisal process. The primary purpose of this certification is to acknowledge the appraiser's ethical obligations. It demonstrates that the appraiser has adhered to the standards and ethical guidelines set forth in the professional appraisal practice, confirming their commitment to impartiality, integrity, and adherence to the Uniform Standards of Professional Appraisal Practice (USPAP).

By signing the certification, the appraiser affirms that they have conducted the appraisal in accordance with applicable laws, regulations, and professional standards. This assertion is critical as it reassures users of the appraisal report, such as government agencies or stakeholders, that the findings are grounded in ethical practices and that the appraiser has avoided any conflicts of interest that might compromise the objectivity of the appraisal.

While summarizing applicable laws, confirming data integrity, and summarizing appraisal findings are undoubtedly important aspects of the appraisal report, they do not capture the primary function of the signed certification. The certification specifically relates to the ethical duty of the appraiser, ensuring that all actions and decisions made during the appraisal process reflect a commitment to professional standards.