Commission pauses local zoning-text amendments while state accessory-dwelling bill advances

Planning staff told the commission they are pausing proposed local zoning-text amendments (including missing-middle and ADU-related changes) while monitoring a recently introduced Illinois House bill that would require accessory dwelling units (ADUs) in all single-family zoning districts and could preempt local zoning authority.

The staff member said the proposed legislation would mean local ordinances could no longer prohibit ADUs in single-family zones and that changes could affect setbacks, lot-coverage calculations and other dimensional standards. Commissioners asked for clarifications about what an ADU is (examples noted included garage conversions or small backyard dwellings), and staff agreed to email the commission the bill number and the proposed language so members can review the precise text.

Commissioners noted the potential scale of change — staff warned that some local setback, lot-coverage and density standards might have to be revisited if the bill becomes law. Staff also noted the pause is intended to avoid rewriting local code only to have statewide legislation require different rules within a short time frame. No formal action was taken; staff said it would distribute the bill synopsis and language by email to the commission.