Klickitat County Assessor's Office Mass Appraisal Report

IAAO Mass Appraisal StandardsRatio Study Performance Standards*Measure ofCentralTendencyCoefficient ofDispersionPrice RelatedDifferentialType of PropertySingle Family ResidentialNewer, More Homogenous Areas 0.90 to 1.10 10.0 or less 0.98 to 1.03Older, Heterogeneous Areas 0.90 to 1.10 15.0 or less 0.98 to 1.03Rural Residential and Seasonal 0.90 to 1.10 20.0 or less 0.98 to 1.03Income Producing PropertiesLarge, Urban Jurisdictions 0.90 to 1.10 15.0 or less 0.98 to 1.03Smaller, Rural Jurisdictions 0.90 to 1.10 20.0 or less 0.98 to 1.03Vacant Land 0.90 to 1.10 20.0 or less 0.98 to 1.03Other Real and Personal Property 0.90 to 1.10 Varies with localconditions0.98 to 1.03* International Association of Assessing Officers. Standard on Automated Valuation Models (2003).