Residential Property Characteristics for Tax Assessment

Over 30 features describe residential properties for tax assessment in Cook County's northern triennial townships. The Cook County Assessor's Office compiled this data for their Computer Assisted Mass Appraisal system. It includes property characteristics, sales history, and location data up to its archive date in November 2022.

Use Cases

• Predict Sale Price using features like Square root of improvement size, Full Baths, Total Building Square Feet, and Location Factor.
• Analyze spatial patterns of Prior Tax Year Market Value Estimates (Building and Land) by Census Tract, Latitude, and Longitude.
• Model property condition or desirability based on Age, Age Decade, Condition, and Neigborhood Code.
• Identify Multi-Family Indicator properties and analyze their characteristics like Number of Units and Total Units.
• Examine the relationship between Lot Size Squared, Large Lot flag, and market value estimates.

Strengths

• Dataset contains over 30 detailed columns per property record.
• Includes geographic coordinates (Latitude, Longitude) and Census Tract for spatial analysis.
• Provides multiple derived features for modeling, such as square root and squared transformations of key variables.

Limitations

• Sample size and total row count are unknown, limiting statistical reliability assessments.
• Data is archived and not updated, with the most recent sale date likely preceding the November 2022 archive.
• Potential for class imbalance or geographic bias as it covers only specific 'northern triennial townships'.

Provenance

Source

Cook County Assessor's Office via datacatalog.cookcountyil.gov.

Collection Method

Collected for the Computer Assisted Mass Appraisal system for property tax assessment.

Time Range

Covers periods up to its archive date in November 2022; specific start date unknown.

Freshness

Archived as of November 2022; not updated.

Geography

Residential properties in the northern triennial townships of Cook County, Illinois, USA.