In erhla/cmfproperty: Property Tax Analysis

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  fig.path = "man/figures/README-",
  warning = FALSE
)

Transparency & Equity in Property Assessments

This package analyzes the accuracy of property assessments and produces graphs, tables, and reports designed for general use. This package is produced by the Center for Municipal Finance, a research institute at the Harris School of Public Policy, University of Chicago.

For a detailed guide on how to use this package check out our Get started page.

Installation

You can install the development version from GitHub with:

# install.packages("devtools")
devtools::install_github("cmf-uchicago/cmfproperty")

Basic Usage

First import cmfproperty.

library(cmfproperty)

To conduct our study, we need data where every roll is a unique property's sale price and assessed value for a given year.

head(cmfproperty::example_data)

Then, preprocess your data with reformat_data and call make_report. The report from the example below can be found here.

df <- cmfproperty::example_data

ratios <-
  cmfproperty::reformat_data(
    df,
    sale_col = "SALE_PRICE",
    assessment_col = "ASSESSED_VALUE",
    sale_year_col = "SALE_YEAR",
  )

cmfproperty::make_report(ratios, 
                         jurisdiction_name = "Cook County, Illinois",
                         output_dir = "~/../Documents/GitHub/cmf-uchicago.github.io/") 

#output_dir is the directory in which report is saved; default is working directory