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Certification by Landlord - Appendix XI-T, page 1
Basic · 30/100Form Complexity Index

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The Certification by Landlord - Appendix XI-T is a mandatory form for landlords filing for eviction in the New Jersey Superior Court's Landlord-Tenant Division. It provides the court with sworn statements regarding the basis for the eviction, such as the amount of unpaid rent or other lease violations, and confirms the landlord has followed all legal procedures. 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.
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Form Complexity IndexBasic, 30/100

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How to Fill Out Appendix XI-T Online for Free in 2026

What the AI walks you through.

  1. Navigate to Instafill.ai and upload or select the Certification by Landlord - Appendix XI-T form.
  2. Provide your information as the filing attorney or landlord, including name, address, and NJ Attorney ID if applicable.
  3. Enter the court and case details, such as the county, docket number, and the names of the plaintiff (landlord) and defendant (tenant).
  4. Complete Part A if the eviction is for unpaid rent, detailing the amounts owed, or Part B for other eviction grounds, describing the reason.
  5. Fill out Part C, confirming that required notices were served, you have complied with registration laws, and the tenant is not in military service.
  6. Carefully review all the information you've entered for accuracy, then use the AI tool to securely e-sign and date the certification.
  7. Download the completed, signed form for your records and for filing with the Superior Court of New Jersey.

Common Mistakes in Completing Appendix XI-T

The ones the AI is built to catch.

Mathematical Errors in Rent Calculation
Landlords often make simple addition errors in Part A, causing the itemized amounts for base rent, late fees, and costs to not match the total rent owed. This discrepancy can undermine the landlord's credibility and may lead a judge to question the entire amount, delaying the eviction. To avoid this, double-check all calculations before submission; using an AI-powered tool like Instafill.ai can automate these calculations to ensure accuracy.
Improperly Including Non-Rent Charges
A frequent error is including charges like utility payments or repair costs in the 'rent due' section when the lease does not explicitly define them as 'additional rent'. Courts strictly interpret what constitutes rent in an eviction action, and including improper charges can lead to the dismissal of the case. Landlords must carefully review their lease agreement to ensure every charge listed is legally considered rent for eviction purposes.
Forgetting to Attach Required Notices
Paragraph C.1 requires attaching copies of all notices served on the tenant, such as a Notice to Quit. Forgetting to include these documents is a critical and common error that often results in the immediate dismissal of the eviction case, forcing the landlord to start the entire process over. Always create a checklist to ensure all required attachments are included with the filing.
Missing Landlord or Attorney Information
Landlords filing without an attorney (pro se) sometimes get confused by the 'Filing Attorney Information' heading and leave the top section blank. This section must be completed by either the attorney or the landlord. Missing contact information can halt the case, as the court has no way to communicate with the filing party.
Incorrectly Identifying Plaintiff and Defendant
It's a common clerical error to mix up the Plaintiff (the landlord filing the suit) and the Defendant (the tenant being evicted). This creates significant confusion in the court record and can lead to processing delays or require filing amended paperwork. Always double-check that the landlord's name is in the 'Plaintiff' field and the tenant's name is in the 'Defendant' field.
Errors in Certifying Notice Service
In Part C.2, landlords may check the wrong box for how a notice was served or forget to enter the date for personal service. Proper service of notices is a strict legal prerequisite for eviction, and any error or inconsistency in this certification can be grounds for dismissal. It is crucial to keep accurate records of how and when each notice was delivered and reflect that accurately on the form.
Missing Signature or Date
An unsigned or undated certification is legally invalid and will be rejected by the court clerk or dismissed by a judge. This simple oversight happens frequently due to haste and requires the landlord to refile the document, causing unnecessary delays. Always perform a final review of the form to ensure the signature and date fields are properly completed before filing.
Failure to Cross Out Inapplicable Sections
The form instructs the filer to 'Cross out any paragraphs... that do not apply.' For instance, if the eviction is for unpaid rent (Part A), Part B should be crossed out. Failing to do this creates ambiguity about the legal basis for the eviction, which can confuse the court and be used by the tenant's defense to challenge the filing.
Entering an Incorrect or Incomplete Docket Number
The docket number is the unique identifier for the court case, and entering it incorrectly can cause the certification to be misfiled or not associated with the correct case. This can lead to significant delays or the document being lost in the court system. The docket number should be copied carefully from previous court correspondence; AI-powered form fillers like Instafill.ai can help maintain consistency by auto-populating this number across all related case documents.
Including Prohibited Personal Identifiers
The form explicitly warns filers not to include personal identifiers like Social Security or bank account numbers because it is a public document. Landlords might accidentally include this information in an attachment or description, creating a public record of sensitive data and exposing individuals to identity theft. Since this form is a non-fillable PDF, a tool like Instafill.ai can convert it to a fillable version and help flag such sensitive information before submission.

Frequently Asked Questions About Appendix XI-T

 

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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 Appendix XI-T, 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 Appendix XI-T to fill out?
Appendix XI-T has a Form Complexity Index of 30 out of 100, in the basic tier: 24 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 'Certification by Landlord - Appendix XI-T' form?
This form is used by a landlord in New Jersey to certify key facts to the court in a landlord-tenant eviction case. It details the reasons for the eviction, such as unpaid rent or other grounds, and confirms that proper legal procedures have been followed.
Who needs to complete this form?
The landlord or their attorney must complete and sign this form. It is a required document when filing for an eviction in the New Jersey Superior Court's Landlord-Tenant Division.
When should I fill out Part A versus Part B?
Fill out Part A if the eviction is for non-payment of rent, detailing the specific amounts owed. Fill out Part B if the eviction is for other reasons, and if both situations apply, you should complete both sections.
What documents do I need to attach to this form?
You must attach a copy of all notices that you have served on the tenant regarding this eviction action. This is a mandatory requirement stated in Part C of the form.
The form says it's a 'public document.' What does that mean for my privacy?
This means the completed form will be available to the public upon request. To protect your privacy, you must not include personal identifiers like Social Security numbers, bank account numbers, or driver's license numbers on the form.
In Part A, can I include late fees and legal costs in the total rent owed?
Yes, but only if your lease agreement explicitly defines these charges as 'additional rent.' You must also ensure these charges are permitted by all applicable state and local laws, including any rent control ordinances.
I don't have an attorney. Can I still file this form?
Yes, you can file without an attorney, but you must certify in Part C that you own the property in your own name or in a general partnership. If the property is owned by a corporation or LLC, you will likely need an attorney.
How do I indicate how the notices were served on the tenant?
In Part C, you must check all the boxes that apply for how you served the required notices. The options are by ordinary mail, certified mail, or served personally, and you should specify the date of personal service if applicable.
Why does the form ask if the tenant is in the military?
This is to ensure compliance with the Servicemembers Civil Relief Act (SCRA), which provides legal protections to active-duty military members. You must certify that the tenant is not in the military service to proceed with a standard eviction.
Where do I submit this completed form?
This form is submitted to the Special Civil Part of the New Jersey Superior Court in the county where the property is located. It is filed as part of your landlord-tenant eviction case, identified by the docket number.
What does it mean to 'Cross out any paragraphs in those parts that do not apply'?
This instruction means you should draw a line through any specific statements within Part A or B that are not relevant to your particular case. This clarifies for the court which specific claims you are making.
Can I use an AI tool to help me fill out this form?
Yes, services like Instafill.ai use AI to help you accurately auto-fill form fields, which can save time and reduce errors. The AI can extract information from your case files to populate fields like names, addresses, and docket numbers.
How can I fill out the Certification by Landlord form online?
You can use a service like Instafill.ai to fill out the form online. Simply upload the PDF, and the tool will make it an interactive, fillable form that you can complete, sign, and download from your browser.
What if the PDF version of this form I have is not fillable?
If you have a flat, non-fillable PDF, you can upload it to Instafill.ai. The service can convert it into an interactive, fillable form, allowing you to easily type in your information.
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