What is the most common measure of appraisal uniformity?

The Coefficient of Dispersion (COD) is the most common measure of appraisal uniformity because it specifically quantifies the level of uniformity or consistency in assessed values relative to market values within a jurisdiction. The COD assesses how closely the individual property assessments align with the overall market trends, effectively highlighting the level of variation among assessments.

This measure is particularly valuable in property taxation and assessment administration, as it provides a clear statistical representation of how well property values are being assessed in relation to actual market conditions. A lower COD indicates a higher uniformity, suggesting that assessments are consistent across properties, while a higher COD suggests discrepancies and potential inequities in the assessments.

In practice, maintaining a proper COD is essential for ensuring fairness and accuracy in property taxation, serving as a critical tool for assessors to identify potential issues or disparities that need to be addressed.