Chicago RLTO Guide: What the Residential Landlord and Tenant Ordinance Actually Requires
The Chicago Residential Landlord and Tenant Ordinance — Chapter 5-12 of the Municipal Code, the RLTO — applies to nearly every residential rental in the city. The one exemption that matters: buildings of six units or fewer where the owner actually lives in the building. Everything else is covered. The three-flat you inherited but don't live in: covered. The condo you rent out: covered. The single-family house in Portage Park: covered. And for every covered unit, the ordinance hands tenants money damages plus attorney's fees when landlords slip.
This is Part 5 of my Ask an Eviction Lawyer series. I handle 150-plus evictions a year across Cook, DuPage, Kane, and Lake Counties, and in Chicago the RLTO is the terrain every single case is fought on. I've watched landlords with airtight nonpayment cases write checks to tenants who owed them five figures, purely on RLTO counterclaims. So here's what the ordinance actually requires, what tenants' lawyers hunt for, and where your real dollar risk sits.
Who the RLTO Covers (and the Exemption Everyone Gets Wrong)
Beyond owner-occupied buildings of six units or fewer, the RLTO also exempts hotel and motel stays (until they stretch into month-to-month rent), dormitories, employer-provided housing, and co-op units occupied by the shareholder. That's basically it.
The mistake I see: "owner-occupied" means a human owner living in the building. If title sits in your LLC, expect a tenant's lawyer to argue the exemption is gone even though you live upstairs — I treat LLC-owned buildings as covered and draft accordingly. And the exemption follows occupancy: move out of your two-flat and rent both units, and you became RLTO-covered the day the moving truck left.
The $100 Attachment That Kills Cases: the RLTO Summary
Section 5-12-170 requires the current City-issued RLTO summary attached to every written lease and renewal, plus a separate summary stating the security deposit interest rate. Miss them and the tenant is entitled to $100 and gains the right to terminate the lease.
A hundred dollars sounds like nothing. The real cost is what it signals: the missing summary is the first box on every tenant attorney's intake checklist, because it proves the landlord never updated the lease packet — which means the deposit handling, the late fees, and the disclosures probably have problems too. It's the loose thread they pull.
Security Deposits Under 5-12-080: the Biggest Number on the Board
If you take a deposit in Chicago, Section 5-12-080 requires a signed receipt, a segregated interest-bearing account at an Illinois bank (no commingling with your money), annual interest at the City's published rate — 0.01% in recent years — itemization of damages within 30 days of move-out, and return within 45 days.
Violate any of it and you owe the deposit back plus two times the deposit in damages plus interest plus the tenant's attorney's fees. Courts apply this even to good-faith mistakes. This is why most of my Chicago landlord clients take a non-refundable move-in fee instead of a deposit, and why the ones who still hold deposits get a compliance calendar from me with three deadlines on it.
Tenant Remedies and Repair-and-Deduct
Section 5-12-110 gives tenants a toolbox when the unit has problems. The headline tools:
- Terminate for material noncompliance: 14 days' written notice; if you don't fix it, the lease ends.
- Withhold rent proportionally: after 14 days' notice, the tenant may withhold an amount that reasonably reflects the reduced value of the unit.
- Repair and deduct: for minor defects, the tenant can give you 14 days' notice, hire the repair done in a workmanlike manner, and deduct the cost from rent — capped at the greater of $500 or one-half month's rent.
The defense lesson: a tenant who properly invoked 5-12-110 isn't "short on rent" — they have a defense to your 5-day notice. Before you serve anything, pull the maintenance file and the text thread. I've seen evictions filed over withheld rent where the tenant did everything by the book and the landlord paid the fees.
Late Fees and Prohibited Lease Clauses
Under 5-12-140, late fees are capped at $10 per month on the first $500 of monthly rent plus 5% of the amount above $500 — $85 on a $2,000 rent. Flat $100 or $150 late fees are unenforceable and create refund exposure across every month you charged them.
The same section voids lease clauses that waive RLTO rights, confess judgment, or impose one-way attorney fees. Attempting to enforce a prohibited clause exposes you to two months' rent in damages plus fees.
Landlord Access: Two Days' Notice
Section 5-12-050 requires two days' notice before entry, at reasonable times — generally 8 a.m. to 8 p.m. — with genuine emergencies excepted. Abuse the access right and the tenant can seek an injunction and damages. "I own the building" is not a key to the unit. Text the notice, keep the thread.
Retaliation: the Trap Around Every Complaint
Section 5-12-150 prohibits terminating, raising rent on, or refusing to renew a tenant because they called 311, complained about conditions, joined a tenants' union, or exercised any RLTO right. The remedy runs to two months' rent or twice the tenant's damages, whichever is greater, plus fees.
Practically: if a tenant complained to the City in March, a non-renewal in April looks retaliatory regardless of your actual reason. Document your legitimate reasons in real time — rent ledgers, photos, police reports — because timing alone can put you on defense.
Lockouts: the Fastest Way to Lose Everything (5-12-160)
You cannot change the locks, cut the heat, remove doors, or shut off utilities to get a tenant out — ever. Section 5-12-160 makes lockouts unlawful, with fines that run per day, plus tenant damages and fees, and the police will put the tenant back in. The only lawful removal in Illinois is the sheriff executing an eviction order at the end of the formal eviction process. A proper case costs $1,600 in Chicago; a lockout costs multiples of that and hands the tenant the moral high ground in front of the judge you'll see later anyway.
Notices Under the RLTO: Where Evictions Are Won
Section 5-12-130 governs terminations. Nonpayment takes a 5-day notice the tenant can defeat by paying within the five days. Lease violations take a 10-day notice — and unlike state law, the RLTO gives the tenant the right to cure within those ten days. Non-renewals and month-to-month terminations follow Chicago's Fair Notice rules: 30 days' notice under six months of tenancy, 60 days from six months to three years, 120 days beyond three years. Use our free templates — get the 5-Day, 10-Day, and 30-Day notice forms here — and be careful accepting money after service; taking rent on a terminated tenancy can waive your notice. Call before you deposit anything.
What Tenants' Attorneys Look For
Section 5-12-180 awards attorney's fees to prevailing tenants. That fee-shifting is the business model: a tenant attorney can take a case for free because you'll be paying the bill. Their audit order, in my experience: (1) deposit violations — strict liability, biggest damages; (2) missing summaries — instant $100 and proof of sloppiness; (3) overcharged late fees — clean math, easy to prove; (4) interest never paid; (5) anything that smells like retaliation or self-help. None of it requires the tenant to be right about the rent.
How I Defend These Cases — and Your Priority List
My RLTO defense work starts with an honest audit of your exposure, because settlement leverage depends on knowing your own weaknesses before the other side prices them. Then we cure what's curable, structure agreed orders so counterclaims get waived in exchange for move-out terms, and try the cases where the tenant's theory overreaches. If you're a landlord staring at an RLTO counterclaim, ranked by dollar risk, fix things in this order:
| Priority | Issue | Realistic exposure |
|---|---|---|
| 1 | Security deposit handling (5-12-080) | Deposit + 2x damages + fees; five figures fast |
| 2 | Lockouts and utility shutoffs (5-12-160) | Per-day fines, damages, fees, and a furious judge |
| 3 | Late fees over the cap (5-12-140) | Refunds across every tenant, every month |
| 4 | Retaliation timing (5-12-150) | Two months' rent or 2x damages, plus fees |
| 5 | Missing summaries (5-12-170) | $100 each — but it's the thread that unravels the rest |
Frequently Asked Questions
Does the RLTO apply to a single-family home?
Yes, if you don't live in it. The exemption is for owner-occupied buildings of six units or fewer — a rental house you live elsewhere from is covered, summaries and all.
Can I still evict a tenant if I've violated the RLTO?
Usually yes — RLTO violations don't erase unpaid rent, but they fund counterclaims that can offset your judgment, delay possession, and shift fees. I'd rather know about your violations at the first phone call so we can price them into the strategy instead of discovering them in the tenant's answer.
What does it cost me if I never attached the RLTO summary?
$100 per tenant, plus the tenant's right to terminate the lease. The bigger cost is evidentiary: it tells the court and opposing counsel that your paperwork hasn't been reviewed in years.
Does the RLTO apply in the suburbs?
No — but suburban Cook County has its own ordinance, the Cook County RTLO, with similar coverage rules and its own fee and deposit limits. DuPage, Kane, and Lake operate under state law, which is part of why my DuPage flat fee is $895 versus $1,600 in Chicago.
If you own Chicago rental property and any section above surprised you, that's worth a phone call before it's worth a counterclaim. I'm Justin Abdilla, I do this every day from Lisle, and consultations are free: call (630) 839-9195 or book a free 30-minute phone consultation. Bring your lease and your deposit records — I'll tell you exactly where you stand.