Illinois's New Squatter Law (SB 1563): What Chicago Landlords Can and Can't Do

For years, an Illinois owner who found a squatter in their property faced an infuriating problem: because squatters were effectively treated like tenants, removing one meant filing a full eviction and waiting months — for someone who broke in and never had any right to be there. Senate Bill 1563 changes that. Signed in July 2025 and effective January 1, 2026, it reclassifies true squatters as criminal trespassers whom police can remove, without an eviction case. But the line between a squatter and a tenant is everything here, and crossing it by mistake can expose you to serious liability. Here's what the law actually does — and what it doesn't.

The Old Problem: Squatters Treated Like Tenants

Under prior practice, an unauthorized occupant could drag an owner into the civil eviction process even with no lease, no rent, and no legitimate claim to the unit. That meant months in court while a trespasser stayed put. That's the "squatter loophole" SB 1563 is meant to close — by drawing a clear line between a lawful tenant and someone who simply broke in.

What SB 1563 Changes

Starting January 1, 2026, the law clarifies that law enforcement can remove unauthorized occupants when a criminal trespass has clearly occurred — without the owner filing an eviction case. In practice:

• You contact law enforcement and present proof of ownership (deed, mortgage) plus documentation of the situation.
• Police assess whether it's a clear trespass (forced entry, forged or fake documents, no claim of tenancy) or a civil landlord-tenant dispute.
• If it's a straightforward trespass, officers can remove the occupants under their clarified authority — no eviction order required.

The Line That Matters: Squatter vs. Tenant

This is where landlords can get themselves in trouble. SB 1563 does not apply to tenants with valid rental agreements, and it explicitly preserves due process for lawful tenants — it cannot be used to shortcut an eviction.

Grey areas still go to eviction court. An oral agreement, any history of rent payments, or a colorable claim of tenancy can all push a situation out of "trespasser" territory and back into a civil case. If the person ever paid you rent or you had any kind of agreement with them, they likely have tenant rights, and the police-removal route is off the table. And a holdover tenant — someone whose lease ended but who is still there — is a tenant, not a squatter: they require the normal eviction and Fair Notice process.

How to Use It the Right Way

• Call law enforcement and bring your deed or mortgage plus evidence there's no tenancy — no lease, no rent records, and any signs of forced entry or forged documents.
• Never attempt self-help. Changing locks, removing belongings, or shutting off utilities is an illegal lockout that carries civil and potential criminal liability — and SB 1563 does not change that. Removal runs through police, not through you.
• Expect police to require clear evidence. They won't remove someone on your say-so alone, and if there's any indication of tenancy they'll (correctly) treat it as a civil matter.

The Risk: Getting the Classification Wrong

If you push to have someone removed as a trespasser when they actually had a tenancy claim, you can face liability for a wrongful, illegal eviction — and the occupant can contest the removal and return. The safe rule: when you're unsure whether someone is a squatter or a tenant, treat them as a tenant and use the eviction process. It's slower, but it protects you. The Cook County eviction process and the rules against self-help eviction still govern anything that isn't a clear-cut trespass.

What It Means in Chicago

SB 1563 applies statewide, so it covers Cook County and Chicago. But Chicago's RLTO protections for actual tenants are untouched — this law is strictly about true trespassers. Don't let "squatter" headlines tempt you into shortcutting a genuine tenant situation, which in Chicago carries steep penalties. The tool is powerful for the narrow case it's built for, and dangerous if you stretch it past that.

For the full picture, see our rundown of all the 2026 Chicago & Illinois landlord law updates.

Key Takeaways

• SB 1563 is law — signed in 2025, effective January 1, 2026, statewide including Cook County
• It lets police remove true squatters as criminal trespassers, with no eviction case needed
• It does not apply to tenants — a valid lease, an oral agreement, or any rent history keeps you in eviction court
• A holdover tenant (lease ended, still there) is a tenant, not a squatter
• No self-help, ever — removal goes through law enforcement; illegal lockouts carry civil and criminal liability
• When unsure squatter vs. tenant, treat them as a tenant and use the eviction process