Your landlord generally has 30 days in Illinois to return your security deposit or itemize deductions in writing (for buildings with 5 or more units). DepositsBack.app helps you take the next step: a state-specific security deposit notice sent by USPS Certified Mail, with tracking that stays attached to your case. This page summarizes general information from 765 ILCS 710/1 and official state sources.
The general deadline is 30 days. Landlords must return security deposits within 30 days after the tenant vacates.
You may still be able to send a notice. We show general state information and official sources so you can review your situation and decide your next step.
The Complete Case Bundle includes your notices, USPS Certified Mail history, case summary, evidence checklist, attorney handoff sheet, and official state resources — all in one downloadable ZIP.
If the 30-day deadline passes without a return of your deposit or an itemized written statement of deductions (for buildings with 5 or more units), your records — DepositsBack.app notice, USPS Certified Mail delivery confirmation, and any response uploaded to your case — document the timeline. You can review your situation alongside 765 ILCS 710/1 and official state resources, and decide whether to consult an Illinois attorney or proceed with self-help next steps.