Resources & Data
Learn more about our efforts to re-legalize four-flats and how this change can benefit Chicago.
Information Packet
Our comprehensive information packet provides data on how legalizing four-flats can benefit Chicago neighborhoods.
Download PDFResearch & Evidence
Here's what the research shows about allowing more housing types in residential neighborhoods:
Urban Institute Research

The Urban Institute found that allowing multi-unit housing in more areas improves affordability without disrupting neighborhoods.
Minneapolis 2040 Results

After Minneapolis reformed its zoning to allow more housing types, new construction increased while maintaining neighborhood character.
Maps & Data Visualizations
CTA Rail Access

This map shows areas within walking distance of CTA train stations, highlighting the potential for transit-oriented four-flat development.
Bus Route Accessibility

Four-flats near bus routes would ensure all Chicagoans have access to affordable housing with good transportation options.
City Wide Frequency

Some community areas in Chicago already have many of their homes in existing two to four flats.
Tax Impact Analysis

This analysis shows how four-flats can increase municipal revenue while keeping per-unit housing costs affordable.
Who Benefits from Four-Flats?

Four-flats provide housing options for a diverse range of Chicagoans, from young professionals to families to seniors.