How to Write a Legal Security Deposit Demand Letter in Illinois
In Illinois, security deposits are governed by Illinois Security Deposit Return Act — 765 ILCS 710/1. Landlords must return your deposit within 30 days of move-out, and wrongful withholding can expose them to damages of 2× the wrongfully withheld amount plus attorney's fees.
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Generate free preview →Illinois security deposit law at a glance
- Governing statute
- Illinois Security Deposit Return Act — 765 ILCS 710/1
- Cite in your letter as
- 765 ILCS 710/1
- Return deadline
- 30 days after move-out
- Penalty for bad faith
- 2× the wrongfully withheld amount
- Small claims limit
- $10,000
5 steps to a demand letter that gets a response
- 1
State the facts up front
Open with your deposit amount, the property address, and your move-out date. Make clear you are formally disputing the deductions — not asking a favor.
- 2
Cite 765 ILCS 710/1
Reference Illinois Security Deposit Return Act — 765 ILCS 710/1 by name. Illinois landlords must return the deposit within 30 days and may only withhold for damage beyond normal wear and tear. Naming the statute signals you know your rights.
- 3
Itemize every disputed charge
List each deduction and explain why it is not lawful — routine cleaning, repainting, and ordinary carpet wear are the landlord's cost of doing business, not yours.
- 4
State the penalty exposure
Spell out that wrongful withholding under 765 ILCS 710/1 can expose the landlord to damages of 2× the wrongfully withheld amount plus attorney's fees. This is what moves landlords to settle.
- 5
Set a deadline and send certified
Demand return within 30 days and send the letter via USPS Certified Mail with Return Receipt. The receipt is your proof of delivery if you end up in Illinois small claims court (limit $10,000).
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Frequently Asked Questions
What law governs security deposit demand letters in Illinois?
Illinois Security Deposit Return Act — 765 ILCS 710/1 (cited in letters as 765 ILCS 710/1) governs security deposits in Illinois. It requires return within 30 days of move-out and limits deductions to damage beyond normal wear and tear.
How much can I demand in Illinois?
You can demand the full amount that was wrongfully withheld. If the landlord acted in bad faith, 765 ILCS 710/1 allows for damages of 2× the wrongfully withheld amount plus attorney's fees, which you can pursue in small claims court (Illinois limit: $10,000).
Do I have to send the demand letter by certified mail in Illinois?
It is not always legally required, but it is strongly recommended. Certified mail with a return receipt proves the landlord received your demand and started the clock — essential evidence if you file in Illinois small claims court.
Can I see a Illinois demand letter before I pay?
Yes. You can generate a free instant preview of a Illinois security deposit demand letter — citing 765 ILCS 710/1 — with no account or payment required.
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