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Affidavit - Supporting Documents Not Attached to Eviction Complaint, page 1
Basic · 40/100Form Complexity Index

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What this form asks for

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This form, officially titled "Affidavit - Supporting Documents Not Attached to Eviction Complaint," is a legal document used in Illinois Circuit Courts for eviction proceedings. A plaintiff (landlord) uses this affidavit to formally state under oath why they could not attach required supporting documents—such as the eviction notice, proof of service, or the lease agreement—to their Eviction Complaint. This is important for ensuring the case can proceed correctly even when certain paperwork is missing or not applicable. Today, this form can be filled out quickly and accurately using AI-powered services like Instafill.ai, which can also convert non-fillable PDF versions into interactive fillable forms.
Fillable fields36
Pages1
Sections6
Questions that depend on earlier answers3
Form Complexity IndexBasic, 40/100

The AI checks your answers before you download

15 checks built for this form, so a wrong date or a missing answer is caught before anyone else sees it.

Ensures County is a valid Illinois County

This check validates that the 'County' field entry matches an official list of Illinois counties. This is crucial for ensuring the legal document is filed in the correct jurisdiction, as filing in the wrong county can lead to immediate dismissal of the case. If the entered text does not match a valid county, the user will be prompted to correct the entry before submission.

Requires Plaintiff Name

This validation ensures that the 'Plaintiff Name' field is not left empty. The plaintiff is a primary party to the legal action, and their identity is essential for the case to proceed. Failure to provide a plaintiff name would render the affidavit legally invalid, so the form cannot be submitted without this information.

Requires at least one Defendant Name

This check verifies that the 'Defendant(s) Name(s)' field contains at least one name. The defendant is the party against whom the eviction is being filed, and their identification is fundamental to the legal process. An affidavit without a defendant is meaningless, and submission will be blocked until at least one defendant is named.

Validates Case Number Format

This check ensures that if a 'Case Number' is entered, it follows the standard format for Illinois circuit courts (e.g., YYYY-XX-######). While this field may be for court use, incorrect formatting of a user-entered number could cause filing or processing errors. The validation helps maintain data integrity and prevents association with the wrong case file.

Ensures a Reason is Selected for Not Attaching Notice/Demand

This validation confirms that at least one checkbox under section 1 ('I did not attach a Notice or Demand...') is selected. The entire purpose of this affidavit is to explain why required documents are missing. Failing to provide a reason for the missing Notice or Demand makes the affidavit incomplete and defeats its purpose, so the form will not be accepted until a reason is chosen.

Requires Explanation for 'Other Reason' in Section 1

This is a conditional check that activates if the user selects the 'Other reason' checkbox in section 1. It ensures the corresponding text field ('Reason 1 Other Reason') is not empty. An 'Other' selection without an explanation is insufficient for legal purposes and would likely lead to the document being rejected by the court.

And 9 more checks
  • Ensures a Reason is Selected for Not Attaching Proof of Service
  • Requires Explanation for 'Other Reason' in Section 2
  • Ensures a Reason is Selected for Not Attaching Written Lease
  • Requires Explanation for 'Other Reason' in Section 3
  • Requires Affiant Signature and Printed Name
  • Requires Full Affiant Address
  • Validates Affiant Telephone Number Format
  • Validates Affiant Email Address Format
  • Validates ZIP Code Format

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How to Fill Out E-SD 3515.2 Online for Free in 2026

What the AI walks you through.

  1. Navigate to Instafill.ai and upload or select the 'Affidavit - Supporting Documents Not Attached to Eviction Complaint' form.
  2. Enter the court and case details, including the county, plaintiff's name, defendant's name(s), and the case number.
  3. Follow the AI-guided prompts to check the boxes that explain why you did not attach the Notice/Demand, proof of service, or written lease.
  4. If you select 'Other reason' for any of the sections, type your specific explanation into the corresponding text field.
  5. Carefully review all the information you have provided to ensure it is accurate and complete.
  6. Electronically sign the affidavit by typing your name, then enter your full name, address, telephone number, and email address.
  7. Download, save, or print the completed affidavit, ready to be filed with your Eviction Complaint at the appropriate Illinois Circuit Court.

Common Mistakes in Completing E-SD 3515.2

The ones the AI is built to catch.

Entering the Wrong County for Filing
Plaintiffs sometimes mistakenly enter the county where they live, rather than the county where the rental property is located. An eviction case must be filed in the circuit court of the county where the property sits. This error will cause the filing to be rejected by the court clerk, delaying the entire eviction process until it is refiled in the correct jurisdiction.
Omitting or Misspelling Defendant Names
Filers may only list the primary tenant, forgetting to include all other known adult occupants by their full legal names. Using nicknames or misspelling names is also a frequent error. An eviction order is only enforceable against the individuals named in the suit, so failing to list all occupants can prevent their legal removal and require a new court case.
Misusing the 'Unknown Occupants' Checkbox
This box is critical for evicting individuals not named on the lease, but it's often used incorrectly. People either forget to check it, or they check it on this affidavit without also checking it on the main Eviction Complaint and Summons. If not checked consistently across all required documents, the sheriff will not evict anyone not explicitly named in the judgment, undermining the entire purpose of the eviction.
Selecting 'Other Reason' Without Providing an Explanation
In sections 1, 2, and 3, the form provides an 'Other reason' checkbox with a line for a mandatory explanation. A very common mistake is to check the box but leave the explanation line blank, which invalidates the selection. This omission makes the affidavit incomplete and can lead to the judge disregarding the reason or the entire document, potentially delaying the case.
Making Contradictory Selections Between Sections
A person might check 'A Notice or Demand is not required in this case' in Section 1, but then check 'I cannot find or did not save my copy' for the proof of service in Section 2. These statements are logically inconsistent. Such contradictions can damage the filer's credibility and may lead a judge to question the validity of the entire affidavit, causing case delays or dismissal.
Incorrectly Claiming a Document is 'Not Required'
A landlord might mistakenly believe a formal eviction notice was not legally required for their specific situation and check the 'not required' box. However, Illinois law has strict notice requirements for most eviction cases. This significant legal error can be grounds for the court to dismiss the entire eviction case, forcing the plaintiff to restart the process from the beginning.
Missing Signature or Printed Name
An unsigned affidavit is legally invalid. People often rush and forget to either sign the form by hand or type their name in the signature field as required for electronic filing. An invalid affidavit will be rejected by the court, halting the progress of the eviction case until a properly executed version is submitted. Always double-check the signature and printed name fields before filing.
Providing an Incomplete Contact Address
When filling out their contact information, filers often forget to include their apartment, suite, or unit number. This can prevent the court and the defendant from successfully sending important legal notices, potentially causing the filer to miss crucial deadlines or hearings. To avoid this, always verify your address is complete. AI-powered form filling tools like Instafill.ai can help prevent these errors by validating addresses for completeness.
Using a Shared or Infrequently Checked Email Address
The form explicitly warns filers to use a private email that is checked daily, as critical court documents will be sent there. Despite this, people may provide a shared family email or an old account they rarely check. Missing a court notice sent via email can lead to a missed hearing and the automatic dismissal of the case, so it is crucial to provide a secure, private email address that you monitor constantly.
Submitting a Poor Quality or Handwritten Form
While this form is a fillable PDF, some users may print it and fill it out by hand, resulting in illegible writing that can be misread by the court clerk. This can introduce critical errors into the case file regarding names, addresses, or other key details. To ensure accuracy, it is best to fill out the form on a computer. If you only have a non-fillable version, tools like Instafill.ai can convert it into an interactive, fillable form.

Frequently Asked Questions About E-SD 3515.2

 

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How does the AI fill out E-SD 3515.2?
You answer a few questions in plain words, or upload a document you already have. The AI reads what you give it and puts each answer into the right field of E-SD 3515.2, on every page, in seconds. It checks the answers against the form's own rules, and you review and change anything before you download, print or sign.
What happens to my information?
It is encrypted in transit and at rest, and it is never used to train AI.
How complex is E-SD 3515.2 to fill out?
E-SD 3515.2 has a Form Complexity Index of 40 out of 100, in the basic tier: 36 fillable fields across 1 page. Instafill.ai's AI fills it in under a minute, with every field there for you to review before you download.
What is the purpose of the 'Affidavit - Supporting Documents Not Attached to Eviction Complaint' form?
This form is used to explain to the Illinois court why you did not attach required documents, such as the eviction notice or the lease, to your main Eviction Complaint. You only need to file this form if you are missing those specific documents.
Who needs to fill out this affidavit?
The Plaintiff (the landlord or property owner filing the eviction case) must fill out this form if they are unable to provide a copy of the eviction notice, proof of service, or the written lease with their Eviction Complaint.
Do I have to fill out this form for every eviction case?
No, you only need to complete and attach this affidavit to your Eviction Complaint if you are not attaching the eviction notice, the proof of service for that notice, or the written lease agreement. If you have all those documents, you do not need this form.
What does the 'Unknown Occupants' box mean?
You should check the 'Unknown Occupants' box if you are trying to evict people living in the property whose names you do not know. This ensures the sheriff can legally evict everyone, but you should only check it if you also checked it on the main Eviction Complaint and Summons.
What if I lost my copy of the eviction notice or the lease?
This form is designed for that exact situation. In the appropriate section, you can check the box that says 'I cannot find or did not save my copy' to explain to the court why the document is missing.
We only had a verbal agreement. What do I do about attaching a lease?
If you did not have a written lease, you would use this form to explain that. In Section 3, you can check the box for 'I did not have a written lease with Defendants.'
Where do I submit this form?
This affidavit should be attached to your Eviction Complaint and filed together with the Circuit Clerk in the Illinois county where the property is located.
How do I sign the form if I'm filling it out on a computer?
The form instructions state that if you are completing it on a computer, you can sign by typing your name in the signature field. You must also print your name and provide your contact information.
What does the perjury warning at the bottom of the form mean?
The perjury warning means you are certifying under penalty of law that all the information you provided is true and correct. Intentionally making a false statement on this form is a crime with serious legal penalties.
What if I don't have a Case Number yet?
The Case Number is assigned by the Circuit Clerk when you first file the case. You can leave this field blank and the clerk will fill it in when you submit your initial paperwork.
Can an AI tool help me fill out this form?
Yes, services like Instafill.ai use AI to help you accurately auto-fill forms like this one. This can save you time and help reduce errors by pulling your information into the correct fields.
How can I use Instafill.ai to complete this form online?
Simply upload the form to the Instafill.ai platform. The AI will identify the fields, and you can provide your information once to have it automatically and accurately placed throughout the document, which you can then download or print.
What should I do if the PDF version of this form I have is not fillable?
If you have a non-fillable or 'flat' PDF, you can use a service like Instafill.ai. It can convert the non-fillable PDF into an interactive, fillable form that you can easily complete on your computer.
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