Illinois 2025-2026 Regular Session

Illinois Senate Bill SB4071

Introduced
2/24/26  

Caption

MUNI CD-ACCESSORY DWELLINGS

Impact

The bill's implementation would significantly impact existing state laws governing zoning and property development. By establishing a framework for the creation and regulation of accessory dwelling units, SB4071 aims to mitigate the constraints that local municipalities face regarding zoning restrictions. Specifically, the bill prevents municipalities from outright prohibiting ADUs and requires them to adopt measures conducive to their development. This shift is expected to encourage a more diverse range of housing options across communities, aligning with statewide goals of increasing housing affordability.

Summary

SB4071 addresses the topic of accessory dwelling units (ADUs) within the context of municipal codes in the state of Illinois. The bill seeks to set forth a standardized approach for local governments to permit and regulate the construction of ADUs, commonly known as 'in-law suites' or 'granny flats'. Proponents of the bill argue that by encouraging the development of these units, communities can effectively expand affordable housing options, particularly for families looking to accommodate aging relatives or for residents wishing to create additional rental opportunities in their neighborhoods.

Contention

However, the bill is not without its critics. Opponents express concerns that mandatory regulations could infringe upon local control, consequently limiting the ability of municipalities to address particular community needs. Some argue that a statewide standard might not account for the unique characteristics and requirements of different neighborhoods, potentially leading to overcrowding and other urban planning challenges. This tension between state mandates and local autonomy serves as a significant point of contention within the discussions surrounding SB4071.

Companion Bills

No companion bills found.

Previously Filed As

IL SB3726

MUNI CD-ACCESSORY DWELLINGS

IL HB5626

MUNI CD-ACCESSORY DWELLINGS

IL HB1813

MUNI CD-ACCESSORY DWELLINGS

IL HB4589

CTY CD/MUNI CD-BUILDING PERMIT

IL HB5223

MUNI CD-ZONING

IL HB5450

MUNI CD-ELECTIONS

IL SB4175

MUNI CD-OPED TRUSTS

IL SB2907

MUNI CD-UTILITY INFO

IL HB4692

MUNI CD-UTILITY INFO

IL HB4407

MUNI CD-TIF START DATE

Similar Bills

No similar bills found.