Property Tax Fairness
From the Center for Municipal Finance

To generate the report, first Download Data. This dataset is a cleaned public dataset we can use.

After downloading the dataset, please run the below R code, for example in RStudio. Remember to replace your output directory” with the path where you want to save the generated report.


df <- fread(“merged_properties.csv”))

df <- df %>% mutate(SALE_PRICE = SalePrice, SALE_YEAR = Year, TAX_YEAR = Year, ASSESSED_VALUE = AssessedValue) %>% mutate(TOTAL_AV = ASSESSED_VALUE / assessment_percentage)

ratios <- cmfproperty::reformat_data(dfsale_col = “SALE_PRICE”assessment_col = “ASSESSED_VALUE”sale_year_col = “SALE_YEAR”)

cmfproperty::make_report(ratiosjurisdiction_name = “King County”output_dir = your output directory”) 

Below is a pre-generated example report: