Landlord Won't Return Your Security Deposit? Here's What To Do

Updated for 2026 · Part of the Chicago Renters' Rights series

A tenant reviews a security deposit return demand letter at a kitchen table with documentation and a calculator
Documenting your deposit claim before going to small claims court can significantly strengthen your case.
This is not legal advice. This article explains general escalation options for informational purposes only. Small claims procedures and deadlines are strict — consult a licensed Illinois attorney or a tenant rights organization about your specific case before filing.

1. If the 45-day deadline has already passed

Under RLTO Section 5-12-080, your landlord had 45 days after your move-out date to return your deposit and interest, or 30 days to send an itemized statement if deductions were being made. If both deadlines have passed with nothing from your landlord, you likely have a claim for the deposit itself plus statutory damages — see our security deposit law breakdown for how those deadlines and the interest rate work.

2. The escalation path

  1. Send a written demand letter citing Section 5-12-080 and giving a firm deadline (a generator for this is in our security deposit law article).
  2. Give it a reasonable window — many landlords settle once they see a letter that cites the ordinance and the 2x penalty specifically.
  3. If there's no response, file in small claims court. No attorney is required, and the fee-shifting provision means you can recover your costs if you win.
  4. Keep every piece of documentation — your original receipt, lease, move-out photos, the demand letter, and proof it was sent.

3. Free tool: Deposit Dispute Damages Calculator & Filing Prep Sheet

No signup. Runs in your browser. Enter your deposit details to see your potential claim total, and download a filing prep sheet that organizes the facts the way a small claims complaint needs them.

4. Filing in Cook County small claims court

DetailWhat to know
WhereCircuit Court of Cook County, Pro Se Small Claims Division — commonly the Richard J. Daley Center in Chicago, or a suburban branch depending on where the property is located
Claim limit$10,000
Filing feeRoughly $75–$268 depending on claim amount and location — ask the clerk about a fee waiver if cost is a barrier
Attorney required?No — the Pro Se division exists specifically for self-represented filers
What to fileA Small Claims Complaint form naming the landlord, describing what happened, citing RLTO 5-12-080, and stating the amount claimed

5. What to bring

7. FAQ

What can I sue for?

Generally the deposit, interest owed, statutory damages of two times the deposit, plus attorney's fees and costs, once a violation is established.

Where do I file in Cook County?

The Pro Se Small Claims Division of the Circuit Court of Cook County, commonly at the Daley Center or a suburban branch.

Do I need a lawyer?

No — small claims court is built for self-represented filers, though attorneys often take strong RLTO cases on contingency.

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