Code Violation Reporting in Illinois (2026)
14 rules on the books across Illinois, 9 cities and counties. Select a rule to read the full details.
Severity: Few Restrictions · Light Restrictions · Some Restrictions · Significant Restrictions · Heavy Restrictions
How to Report
Step-by-step guide to reporting code violations in your city, including 311 numbers, online portals, mobile apps, and what information to include.
Cook County
Some RestrictionsResidents in unincorporated Cook County can report building, zoning, and property violations to the Cook County…
Read full rule →DuPage County
Some RestrictionsUnincorporated DuPage County residents report a public nuisance by complaining directly to the chairman of the County…
Read full rule →Kane County
Some RestrictionsTo flag a suspected property nuisance in unincorporated Kane County, contact one of the code's named authorized…
Read full rule →Lake County
Some RestrictionsLake County splits nuisance-complaint response by subject: the Health Department handles property-maintenance and pest…
Read full rule →St. Clair County
Some RestrictionsSt. Clair County requires zoning code complaints to be filed in writing with the Zoning Administrator. Under Zoning…
Read full rule →Waukegan
Some RestrictionsWaukegan lets any property owner, occupant, or city official report graffiti under City Code § 6-520. Requests for…
Read full rule →Will County
Some RestrictionsWill County's Code Enforcement Officers act on violations they personally observe; only animal control complaints can…
Read full rule →Aurora
Light RestrictionsAurora residents who spot graffiti or a related property nuisance can file a formal complaint with the city's Division…
Read full rule →Kankakee County
Light RestrictionsAnyone can trigger a Kankakee County health nuisance investigation just by filing a complaint with the county health…
Read full rule →Response Times
How quickly your city responds to code complaints, including priority levels for different violation types and typical timelines from report to resolution.
Common Violations
The most frequently reported code violations in your city, including tall grass, junk vehicles, illegal construction, unpermitted signs, and noise complaints.
Cook County
Some RestrictionsThe most common code violations in unincorporated Cook County include construction without permits, illegal occupancy…
Read full rule →Kane County
Some RestrictionsKane County's most common property complaints, weeds, junk, overgrown yards, illegal parking and inoperable vehicles…
Read full rule →Kankakee County
Some RestrictionsKankakee County Code Section 22-24 lists 16 conditions the county treats as a "health nuisance," from unfit dwellings…
Read full rule →Lake County
Some RestrictionsLake County's public nuisance code lists the violations code enforcement cites most: storing junk or debris, letting…
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