If you rented in Illinois and your landlord is holding your security deposit hostage — or sent a list of "damages" with no receipts behind it — the Security Deposit Return Act (765 ILCS 710) puts the paperwork burden squarely on them. Keeping any part of your deposit requires an itemized statement with documented costs on a strict timeline, and a landlord who refuses or acts in bad faith owes you double. A demand letter that walks through the Act's requirements — statement, receipts, deadlines — usually exposes just how little of that paperwork your landlord actually did.
⚖️ The 30/45-day structure: Under 765 ILCS 710/1, a landlord who wants to withhold for property damage must furnish an itemized statement of the damage with estimated or actual repair costs — attaching paid receipts — within 30 days of you vacating. If costs were estimated, paid receipts must follow within 30 more days. No compliant statement and receipts? The full deposit must be returned within 45 days of move-out.
💰 The bad-faith penalty: If a court finds the landlord refused to supply the itemized statement, or supplied it in bad faith, and failed to return the deposit due on time, the landlord is liable for twice the amount of the security deposit due, plus court costs and reasonable attorney's fees.
🏙️ Which rules cover you? The state Act's withholding rules apply to buildings with 5 or more units. But if you rent in Chicago, the Residential Landlord and Tenant Ordinance (RLTO) applies to most rentals regardless of building size — with its own deadlines, mandatory deposit interest, and a two-times-the-deposit penalty of its own. Suburban Cook County has a similar ordinance (RTLO). Renters in smaller downstate buildings still have common-law and small-claims remedies. Tell our generator your city and building size, and the letter cites the framework that actually covers you.
Your Rights Under 765 ILCS 710
The Act is built around documentation, and documentation is where landlords slip. The points worth knowing before you write:
- Itemized statement in 30 days. Damage withholding requires a statement itemizing each alleged damage with the estimated or actual repair/replacement cost, delivered in person, by mail to your last known address, or by email to a verified address you provided.
- Receipts, not vibes. Paid receipts (or copies) must back the costs — and if the landlord gave estimates, the paid receipts must follow within 30 days of the estimate statement. Landlord did the work personally? They may charge reasonable labor, but the itemization requirement still applies.
- The 45-day backstop. No compliant statement and receipts means the full deposit is due back within 45 days of vacating. The deductions are off the table.
- The 2× penalty. A court finding of refusal or bad faith in the statement process, plus failure to return what's due on time, makes the landlord liable for twice the deposit due, plus costs and attorney's fees.
- Normal wear and tear isn't damage. Withholding under the Act is for damage — ordinary wear from simply living in the unit doesn't qualify.
What Your Landlord Can — and Can't — Keep
Legitimate deductions (with a timely, receipt-backed statement)
- Unpaid rent you actually owe
- Documented damage beyond normal wear and tear — holes in walls, broken fixtures, pet damage
- Lease-specified repair/replacement costs, where the statement references the lease provision as the Act requires
NOT legitimate deductions
- Anything withheld with no itemized statement and receipts inside the statutory deadlines
- Normal wear and tear — faded paint, minor scuffs, small nail holes, carpet worn from ordinary use
- Pre-existing damage that was there when you moved in
- Lump-sum "cleaning and repairs" claims with no cost breakdown or documentation
How the Illinois Penalty Actually Adds Up
Suppose your deposit was $1,500 and your landlord kept it all with no itemized statement, then ignored you:
| Component | Amount |
|---|---|
| Deposit due back (45-day rule, no compliant statement) | $1,500 |
| Bad-faith penalty (2× the deposit due) | $3,000 |
| Court costs + reasonable attorney's fees | As awarded |
| Landlord's potential exposure | $3,000+ and fees |
That math — spelled out in a letter that cites 765 ILCS 710/1 and documents the missed deadlines — is what moves an Illinois landlord from "ignoring you" to "cutting a check." In Chicago, the RLTO's own two-times penalty plus interest makes the exposure even less comfortable.
How to Write an Illinois Security Deposit Demand Letter
An effective letter does four things: establishes your vacate date, shows the statement-and-receipts deadlines passed (or that the statement was deficient), makes a specific dollar demand with a firm deadline, and spells out the 2× exposure if you have to sue. Here's how the opening of a strong one reads:
This preview stops here on purpose. Your complete, court-ready letter — customized to your dates, your numbers, and whether the state Act or Chicago's RLTO covers your unit, with the 2× penalty language Illinois landlords take seriously — generates in 60 seconds.
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Tell us your situation — including your city and building size — and we'll generate a demand letter built on 765 ILCS 710 or the Chicago RLTO, with the exact deadline and penalty language for your case.
Generate My Refund Letter — $9If the Letter Doesn't Work: Illinois Small Claims Court
Small claims court
Illinois small claims handles disputes up to $10,000 — more than enough for a deposit plus the 2× penalty. Filing fees are modest, you generally don't need a lawyer, and the Act's fee-shifting means a landlord who fights a documented violation risks paying your attorney's fees too. Your demand letter becomes evidence that you gave them a fair chance to comply — and supports the bad-faith finding if they ignored it.
Chicago and Cook County renters
If the RLTO or Cook County RTLO covers your unit, those ordinances carry their own penalties and attorney-fee provisions, and Chicago's are among the most tenant-friendly in the country. Local tenant organizations and legal aid groups in the Chicago metro offer free guidance — a search for "Chicago tenant rights RLTO" will point you to them.
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Get My Refund Letter — $9Already hearing from a collection agency?
Landlords hand move-out balances to a small set of specialist collectors. If the letter is from National Credit Systems, Hunter Warfield, IQ Data International, or Source RM, we have a company-specific response guide for each — and the demand letter on this page still applies, because a landlord who missed the statutory deadline may owe you money regardless of who is calling. Any other collector: see the collection agency index and your state’s rules in the debt statute of limitations guide.