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SB 4071·IL·senate

MUNI CD-ACCESSORY DWELLINGS

In CommitteeFiled Feb 24, 2026
Sponsor: Rob Martwick (D)
Latest Action

Added as Co-Sponsor Sen. Steve Stadelman

Mar 13, 2026

Summary

The bill forces all Illinois municipalities to adopt ordinances that allow accessory dwelling units (ADUs) wherever single‑family homes are permitted. It limits local governments from adding extra lot, design, parking, size or family‑relationship rules for ADUs. The goal is to expand affordable housing options without increasing local regulatory barriers.

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