What is the purpose of a mass appraisal manual?

A mass appraisal manual serves as a comprehensive guide that outlines the methodologies, procedures, and policies essential for conducting mass appraisals. These manuals ensure consistency and accuracy in the appraisal process, providing a framework within which appraisers operate. They include various aspects of mass appraisal such as data collection, analysis techniques, and valuation methodologies, allowing assessors to apply standardized practices and maintain uniformity across appraisals. This comprehensive guidance is critical in achieving fair and equitable property assessments at a larger scale, making it an essential tool for appraisers and assessors involved in mass appraisal efforts.