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Author: Mark Ainely | Partner GC Realty & Development & Co-Host Straight Up Chicago Investor Podcast
Every week we get calls from landlords with a tenant who has stopped paying. Some have owned property for years, some just closed on their first purchase. The details change, but the tone is always the same, worry mixed with a little bit of panic, because they cannot see how this ends well. Rent is not coming in, the balance keeps growing, and they have heard so many horror stories in Illinois that they do not know what they are legally allowed to do about it.
We wrote about this exact problem recently in What Am I Allowed To Do When A Tenant Stops Paying Rent In Chicago. The short version is that Illinois only gives you two real lanes, the court process or a negotiated exit. Everything else, cutting utilities, pulling a door off, changing locks, costs you money and can cost you the case.
Although we share how we handle this and what we have seen work, if you are going this route you should have an attorney run all of it by you before you do anything. Every situation has its own wrinkles, and this article is not a substitute for a conversation with an attorney or legal advice.
If you are heading down the court lane, it starts with one document, the 5 Day Notice. This is the notice that opens the door to eviction for nonpayment, and it is also the single most common reason a case gets thrown out and the landlord has to start over. Wrong dollar amount, wrong method of service, miscounted days, any of it can undo months of waiting.
This article walks through what the notice needs to say, how it has to be served under Illinois law, and the mistakes we see cost landlords the most time. At the end, we will give you a copy of the actual notice our team uses.
Key Takeaways
A 5 Day Notice is only for nonpayment of rent. Lease violations use a different notice with a different timeline.
The clock starts the day you serve the notice, not the day the tenant stopped paying.
The dollar amount on the notice has to be exact. Adding late fees or other charges that are not rent can void the notice.
Illinois law only allows specific ways to serve the notice. Sliding it under a door or taping it up while someone is living there does not count.
One small mistake on the form or in how it was served is often the reason a judge throws out the case and sends the landlord back to day one.
Chicago and other municipalities layer their own rules on top of state law, so a generic template found online can create problems instead of solving them.
What the 5 Day Notice Is and When You Use It
The 5 Day Notice is the notice Illinois law requires before you can file an eviction for nonpayment of rent. It only applies to nonpayment. If a tenant is violating the lease in some other way, unauthorized pets, unauthorized occupants, damage to the unit, that falls under a different notice with a different timeline, usually 10 days.
The requirement comes from 735 ILCS 5/9-209. It gives the tenant a chance to pay the exact amount owed within 5 days. If they pay in full inside that window, the lease continues and the notice is done. If they do not pay, you can move forward and file for eviction.
This notice is the first real step in the court lane we talked about earlier. Everything about the eviction timeline that follows, the filing, the court date, the order, the lockout, depends on this notice being done correctly first. Get this step wrong and every step after it gets pushed back.
What the Notice Must Include
The correct tenant name. The notice needs to name every adult tenant on the lease, spelled exactly as it appears there, along with "all unknown occupants." That phrase covers anyone over the age of 18 living in the unit who is not on the lease and who you may not be aware of. Under 735 ILCS 5/9-107.5, naming unknown occupants protects you later, since it allows the eventual court order to apply to anyone found in possession of the unit, not just the person named on the lease. Do not name any minors. Illinois House Bill 3566, effective January 1, 2026, bars naming minors as defendants in eviction filings, so a notice or filing that includes a child's name can create a problem you did not need to have.
The correct dollar amount. This is where we see the most notices go bad. The amount has to be rent only, for the period actually owed. Late fees, utility charges, or other add on costs do not belong on a 5 Day Notice. Include them and a judge can throw the whole notice out, because now you are asking the tenant to pay for something that is not rent to avoid an eviction for nonpayment of rent. This is also where it matters to have an attorney review your actual lease. How your lease defines rent versus other charges can change how this section should be written, and that is not something to guess at.
The property address. The unit number and address need to match the lease exactly.
A clear statement of the 5 day window. The notice has to tell the tenant they have 5 days to pay the amount owed in full or vacate the premises.
The full payment language. Under 735 ILCS 5/9-209, the notice needs to clearly state that only full payment of the amount owed waives your right to terminate the lease, unless you have agreed in writing to accept a partial payment. Leave this language out and the notice becomes an easy target to challenge.
Landlord or agent information. Whoever is demanding the payment and who the tenant should pay needs to be clearly identified.
It is a short document, but every line on it can be argued in court. Chicago's RLTO and the Cook County RTLO both layer additional requirements on top of state law depending on where the property sits, which is one more reason to have an attorney confirm the content before it goes out. We treat this notice the same way we treat a lease, nothing goes on there that we cannot back up.
How to Serve It Correctly
The notice itself can be perfect and still get thrown out if it was not served the right way. Illinois gives you a specific list of acceptable methods, and there is no room to get creative with it.
Acceptable methods of service. You can hand the notice directly to the tenant. You can leave it with someone age 13 or older who lives at or is in possession of the unit. You can send it by certified or registered mail with a return receipt from the addressee. Or, if nobody is currently in possession of the unit, you can post it on the premises.
Certified mail is technically on the list, but it is the option we like least. A tenant who knows this letter is coming, or suspects it might be, often will not answer the door for the mail carrier and will not sign for it. On top of that, the signature on the return receipt has to be legible enough to actually prove who signed it. Between those two problems, relying on certified mail to serve a 5 Day Notice has become close to impossible in practice.
Hand delivery is the most reliable method, but it is not always easy for a landlord to pull off. Showing up at a tenant's door to hand them a notice can be time consuming, and for some owners it is genuinely uncomfortable or even a little scary, especially if the relationship has already gone sideways. This is where hiring a process server, usually around $100, makes sense. A process server will go to real lengths to get the notice served, including trying at different times of day or night, and it takes the personal confrontation out of it entirely.
Posting only works when nobody is in possession of the unit. If you believe a unit has been abandoned and are considering posting the notice instead of personal service, that is a good moment to check with an attorney before you act. Depending on what your attorney sees in the situation, there may be a faster path available than a traditional eviction, and it is worth knowing that before you commit to one approach.
Counting the 5 days correctly. The day you serve the notice does not count as day one. The count starts the following day, and it runs through weekends and holidays unless the last day happens to fall on one, which pushes the deadline to the next business day. Miscounting this window is a common and avoidable mistake.
Documentation to keep. Whoever serves the notice should complete an affidavit of service noting the date, the time, and who it was handed to. If you posted the notice because the unit was unoccupied, keep photos showing it was posted and a record of confirming nobody was in possession at the time.
Common Mistakes That Get Cases Dismissed
Most of the notices that fall apart in court do not fall apart because of one dramatic error. They fall apart because of something small that nobody double checked.
The wrong dollar amount. Whether it is a math error, a late fee that snuck in, or a charge that does not actually qualify as rent under the lease, an incorrect amount gives the tenant's attorney an easy argument and gives the judge an easy reason to dismiss.
Improper service. Posting a notice on the door of an occupied unit, sliding it under the door, or having the wrong person accept it on the tenant's behalf are all common ways service gets challenged. If service is defective, the notice never legally started the clock, no matter how many days have passed since you left it.
Miscounted days. Filing on day 5 instead of waiting until day 6, or forgetting that a weekend pushed the deadline, are small errors that can get a filing thrown out before it ever gets a real hearing.
Missing required language. Leaving out the full payment language required under 735 ILCS 5/9-209, or naming a minor on a notice or filing in violation of Illinois House Bill 3566, are both the kind of oversight that can undo an otherwise correct notice.
Using a generic template pulled from the internet. A lot of these templates are built for state law only and do not account for Chicago's RLTO or the Cook County RTLO. A notice that would hold up in a downstate county can get dismissed in Cook County for missing language those ordinances require.
Municipal Differences to Watch
State law sets the floor, but it is not the whole picture. Depending on where the property sits, additional rules can apply on top of the 5 Day Notice itself.
Chicago's RLTO. Properties inside the city limits fall under the Chicago Residential Landlord and Tenant Ordinance, which layers protections and requirements beyond state law. Some of these touch other parts of the tenancy, like deposit handling and disclosure requirements, but they are part of the same framework a judge is looking at when your case comes up, and an owner who only knows state law can miss something that matters.
Suburban and unincorporated Cook County. The Cook County RTLO applies here and mirrors much of the RLTO's intent with its own specific requirements. A notice built only around the statewide statute can leave out something the RTLO expects.
Other municipalities. Places like Evanston and Oak Park have their own local ordinances that sit outside both the RLTO and the RTLO. If you own property across several municipalities, what worked in one town does not automatically hold up in another.
Why a one size fits all notice can backfire. A generic 5 Day Notice pulled from a template site is usually built for the statewide requirement only. It may satisfy 735 ILCS 5/9-209 and still fall short of whatever the local ordinance layered on top expects. The fix is not complicated, it is knowing which rules apply to a specific address before the notice goes out, and having an attorney confirm it.
FAQ
Can I hand the notice to a roommate instead of the tenant? You can leave it with anyone age 13 or older who lives at or is in possession of the unit, so a roommate or other household member can accept it. Just make sure whoever accepted it is documented in your affidavit of service.
What if the tenant refuses to accept it? Refusing to physically take the notice does not stop service from being valid, as long as it was properly presented to them. This is another reason a process server is useful, they know how to document a refusal correctly.
Does a weekend or holiday change the deadline? Yes. If the last day of the 5 day window falls on a weekend or holiday, the deadline moves to the next business day.
Can I combine a 5 Day Notice with another type of notice? No. A 5 Day Notice is specific to nonpayment of rent. A separate lease violation needs its own notice with its own timeline, and combining them on one document creates confusion that can work against you.
Does this process change if the tenant has a Section 8 voucher? The nonpayment process itself does not change, but voucher cases can carry extra notice requirements to the housing authority. This is worth confirming with your attorney before you serve anything if a portion of the rent is subsidized.
Is any of this different outside of Chicago? Yes. Chicago has its own ordinance, Cook County has its own ordinance for the suburbs, and other municipalities can layer their own rules on top of state law. The 5 Day Notice requirement itself is consistent statewide, but what surrounds it is not.
Don't Go At This Alone
At GC Realty & Development we manage roughly 1,500 units across more than 100 municipalities in Chicagoland for over 500 private investors. Notices like this one get served more often than we would like, and our team has been through the process enough times to know where the small mistakes hide.
My mission is simple. I want to help investors buy their time back and lower their risk so owning rental property feels like an investment instead of a second job. You should not have to learn notice service or Cook County court rules by trial and error, especially when one small mistake can cost you months. That is what we are here for.
Related reading
What Am I Allowed To Do When A Tenant Stops Paying Rent In Chicago
The Eviction Process in Illinois: A Step by Step Guide for Landlords (2026)
Get a Copy of the Notice Our Team Actually Uses
Everything in this article explains what the law requires. What we have not given you yet is the notice itself, the same one our team fills out and serves on behalf of the owners we manage properties for.
We are making that available, but only to owners who schedule a call with our team first. On that call we will walk through the notice with you, answer any questions specific to your situation, and make sure you understand how to use it correctly before you serve anything.
A quick note before you request it. This notice is provided as a starting point based on what we have seen work across roughly 1,500 units in Chicagoland. It is not legal advice, and it is not a substitute for having an attorney review your specific lease and situation before you serve anything. Illinois eviction law, along with Chicago and Cook County rules layered on top of it, changes often enough that what worked last year is not guaranteed to work today.
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