ADU Impact Fees: Chicago vs Des Plaines
How do adu impact fees rules compare between Chicago, IL and Des Plaines, IL?
Chicago, IL
Cook County
Chicago does not charge impact fees on ADUs. Standard Department of Buildings permit fees apply based on construction value under Chicago Municipal Code Section 14A-12-109. ADUs in three pilot zones qualify for the Chicago Recovery Plan ADU Grant of up to $50,000.
View full Chicago rules →Des Plaines, IL
Cook County
No data available yet for Des Plaines.
Key Facts Comparison
| Fact | Chicago | Des Plaines |
|---|---|---|
| Impact Fees | None | - |
| Permit Fee Basis | Construction value tiered | - |
| DOH ADU Grant | Up to $50,000 | - |
| Eligible Zones | West, Southeast, South | - |
| Code Section | MCC 14A-12-109 | - |
Highlighted rows indicate differences between cities.
Chicago FAQ
Does Chicago charge impact fees on ADUs?
No. Chicago has no development impact fees. Only standard DOB permit fees tiered by construction value under MCC 14A-12-109 and trade permit fees apply, plus water connection fees if a new tap is required.
Is there financial assistance for Chicago ADUs?
Yes. The DOH Chicago Recovery Plan ADU Grant offers up to $50,000 for new construction or conversion in the West, Southeast, and South pilot zones, prioritizing owner-occupants at or below 120% AMI.
Do I need separate water meters for a Chicago ADU?
No. The Department of Water Management does not require separate metering for ADUs. Existing service is shared, and new tap fees apply only if a separate connection is requested.
Des Plaines FAQ
No FAQs available.
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