Are Landlords Responsible for Pest Control in Illinois?

The Illinois Landlord and Tenant Act doesn't list pest control by name, but it supports the broader obligation that landlords maintain premises consistent with local building and health codes which is where specific pest requirements typically live.

The Statewide Right to Repair (Often Overlooked)

This is worth calling out because many guides frame repair remedies as Chicago-only they aren't. Under the Residential Tenants' Right to Repair Act (765 ILCS 742) a tenant statewide can give the landlord written notice of a health or safety issue including a serious pest infestation and if it isn't fixed within 14 days, the tenant may have it professionally repaired and deduct the cost from rent. This is distinct from rent withholding, which Illinois generally doesn't permit outside a formal court process.

A New Protection: The Illinois Landlord Retaliation Act

Effective January 1, 2025, the Illinois Landlord Retaliation Act (765 ILCS 721), applies statewide and presumes retaliation if a landlord takes adverse action raising rent, reducing services, or attempting eviction within one year of a tenant reporting a code violation or requesting repairs, including for pests. This is a meaningful, relatively new protection that didn't exist in earlier versions of Illinois landlord-tenant guidance.

Chicago Residential Landlord and Tenant Ordinance (RLTO)

For Chicago properties, habitability and pest control obligations are set out in the Municipal Code of Chicago § 5-12-110.Landlords must:

• Maintain the property in compliance with building codes
• Exterminate pests, including in common areas and shared building systems
• Keep basements, cellars, and shared spaces clean and sanitary

If an infestation affects multiple units or common areas, the landlord, not individual tenants, must coordinate treatment.

Responsibility Matrix: Who's on the Hook?

Lease clauses can shift routine pest control costs to tenants, but they cannot waive the landlord's underlying habitability obligation; a clause attempting to exempt a landlord from remediating a structural rodent infestation is generally unenforceable.

Tenant Responsibilities

Tenants aren't exempt from playing their part. Under general Illinois landlord-tenant principles, tenants must:

• Maintain reasonable cleanliness
• Dispose of garbage properly
• Avoid creating conditions that attract pests

If an infestation results directly from tenant negligence, responsibility can shift courts to weigh fault and lease terms before deciding.

Notice and Repair Timelines

Before pursuing remedies, tenants generally must:

1. Notify the landlord in writing, describing the issue and, ideally, including photos or dates of sightings.
2. Allow a reasonable time to fix it : 14 days under the statewide Right to Repair Act for health/safety issues; RLTO timelines in Chicago can vary by violation type.
3. Provide access for inspection and extermination.

Documenting everything written notices, photos, dates, and any landlord responses is what actually determines the outcome if a dispute escalates.

Remedies If the Problem Isn't Fixed

In Chicago, under the RLTO, tenants may withhold rent, repair and deduct, or terminate the lease after proper notice and a reasonable window to fix the issue.

Outside Chicago, the primary statewide remedy is repair-and-deduct under 765 ILCS 742 after 14 days' notice; straightforward rent withholding is generally not available without a court process. In either case, unresolved disputes can be brought to small claims court, which handles claims up to $10,000 without requiring an attorney.

Structural Issues and Pest Entry Points

Landlords remain responsible for structural elements that allow pests in, regardless of lease terms assigning routine pest control to tenants:

• Roofing and foundations
• Plumbing
• Walls, gaps, and entry points

If pests are entering through a structural defect, that's a landlord's responsibility even in a single-family lease that otherwise shifts routine pest prevention to the tenant.

Preventive Practices That Reduce Disputes

• Schedule routine inspections, especially in multi-unit buildings
• Seal structural gaps before they become entry points
• Maintain sanitation in common areas
• Document every pest control service, invoice, and tenant communication

Organized records are what protect landlords if a dispute over responsibility ever escalates; a documented service history is far stronger evidence than a verbal assurance that "it was handled."

Consequences of Non-Compliance

Failing to address a legitimate infestation can lead to:

• Code enforcement fines
• Rent abatement
• Repair-and-deduct or lease termination by the tenant
• Court damages, including in small claims court

Chicago tenants under the RLTO generally have the strongest and most explicit remedies in the state.

Conclusion

Pest control responsibility in Illinois isn't governed by one single law; it's the implied warranty of habitability, targeted statutes like the Right to Repair Act and the new Landlord Retaliation Act, and local ordinances like Chicago's RLTO, working together.

For landlords, the safest position is documented compliance: routine inspections, prompt response to written notice, and clear lease language that doesn't attempt to waive the habitability warranty.

For tenants, understanding the 14-day statewide notice window and Chicago's broader remedies if applicable is the fastest path to getting a real infestation addressed.