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Yes! You can use AI to fill out Certification by Landlord's Attorney - Appendix XI-U

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Certification by Landlord's Attorney - Appendix XI-U, page 1
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What this form asks for

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The Certification by Landlord's Attorney, Appendix XI-U, is a legal document used in the Superior Court of New Jersey's Special Civil Part for landlord-tenant disputes. In this form, the landlord's attorney certifies that they have reviewed the case, the lease, and applicable laws, and confirms that the tenant has failed to pay rent and that any additional fees sought are legally permissible. This certification is a crucial step in eviction proceedings based on non-payment of rent. 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 fields12
Pages1
Form Complexity IndexSimple, 24/100

The AI checks your answers before you download

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

Ensures Attorney Name is Provided

This check verifies that the 'attyName' field is not empty. The identity of the filing attorney is essential for court records and for all subsequent communication. If this field is left blank, the form submission will be rejected, and the user will be prompted to enter the full name of the attorney.

Validates NJ Attorney ID Number Format

This validation ensures the 'attyId' field contains a value that matches the expected format for New Jersey attorney identifiers, which is typically a numeric string. This prevents data entry errors and ensures the ID is a plausible, correctly formatted number that can be used for verification. Submissions with non-numeric or incorrectly formatted IDs will be flagged for correction.

Verifies Attorney Address is Complete

This check confirms that the 'attyAddrFull' field for the filing attorney is filled out. A complete and valid mailing address is mandatory for official correspondence from the court and other parties. An empty address field will result in a validation error, preventing form submission until the information is provided.

Validates Attorney Telephone Number Format

This check ensures the 'attyPh' field conforms to a standard US phone number format (e.g., XXX-XXX-XXXX or (XXX) XXX-XXXX). Proper formatting is crucial for ensuring the contact number is valid and usable for communication. The system should reject entries that do not match a recognized phone number pattern and ask the user to re-enter the number.

Ensures Plaintiff (Landlord) Name is Provided

This validation confirms that the 'plaName' field is not empty. Identifying the landlord is a fundamental requirement for any landlord-tenant action, as it legally establishes one of the primary parties in the case. The form cannot be processed without this information, and a missing plaintiff name will trigger an error.

Ensures Defendant (Tenant) Name is Provided

This check verifies that the 'defName' field has been filled in. The identity of the tenant is necessary to properly name the party against whom the action is being taken. A submission lacking the defendant's name is incomplete and legally insufficient, so the system will block it until the name is entered.

And 6 more checks
  • Ensures County is a Valid NJ County
  • Validates Docket Number Entry
  • Validates Signature Date is Present and Logical
  • Verifies Printed Signature Name Matches Attorney Name
  • Scans for Prohibited Personal Identifiers
  • Ensures NJ Attorney ID is Provided

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

What the AI walks you through.

  1. Navigate to Instafill.ai and upload or select the Appendix XI-U form.
  2. Enter the filing attorney's information, including name, NJ Attorney ID, address, and telephone number.
  3. Specify the court details, including the county and the Landlord-Tenant (LT) docket number.
  4. Clearly identify the names of the plaintiff (landlord) and the defendant (tenant).
  5. Review the certification statements to ensure they accurately reflect your legal opinion on the matter.
  6. Date the document, provide a legally binding signature, and print your name to complete the certification.
  7. Download, print, or securely share the completed form for filing with the Superior Court.

Common Mistakes in Completing Appendix XI-U

The ones the AI is built to catch.

Incorrect or Incomplete Docket Number
Filers often mistype the docket number or forget to include the required 'LT' prefix. The docket number is the primary identifier for the case, and any error can lead to the document being misfiled, rejected by the court clerk, or associated with the wrong case. To avoid this, double-check the number against official court documents. AI-powered tools like Instafill.ai can help by remembering and correctly formatting previously used case information.
Entering the Incorrect County
A common mistake is listing the county where the attorney's office is located instead of the county where the property is located and the case is filed. This legal certification must be filed in the correct jurisdiction's Special Civil Part. Filing in the wrong county will result in the document being rejected and can cause significant delays, potentially requiring the attorney to refile the entire action.
Inconsistent Landlord (Plaintiff) Name
The landlord's name must be listed exactly as it appears on the lease and other legal filings. People often mistakenly use an individual's name when the property is owned by an LLC or corporation, or vice versa. This inconsistency can be used by the defendant to challenge the validity of the filing, potentially leading to dismissal of the case.
Misidentifying or Omitting Tenants (Defendants)
Failing to list all tenants named on the lease or misspelling a tenant's name is a critical error. An incorrect or incomplete defendant name can invalidate the notice for the person who was omitted or misidentified, creating problems with service of process and the subsequent enforcement of any judgment. It is crucial to copy the names exactly as they appear on the signed lease agreement.
Including Prohibited Personal Identifiers
Despite a clear warning on the form, filers sometimes inadvertently include personal data like Social Security or bank account numbers. This form is a public document, and including such information creates a serious privacy breach and identity theft risk. This mistake happens out of habit, but it can have severe consequences for the individual whose data is exposed.
Omitting or Mistyping the NJ Attorney ID
The NJ Attorney ID number is essential for verifying the filing attorney's credentials with the state bar. Forgetting to include it, or entering an incorrect number, can cause the court clerk to question the legitimacy of the filing and delay processing. Pro se litigants (landlords representing themselves) should clearly write 'Pro Se' in this field to avoid confusion.
Missing or Invalid Signature
The attorney's signature certifies the truthfulness of the statements under penalty of punishment, making it the most critical part of the form. Forgetting to sign the document, or having a paralegal sign instead of the attorney of record, renders the certification invalid. An unsigned form will be rejected outright by the court, halting the legal proceedings.
Using Illegible Handwriting
When filling out a printed PDF by hand, illegible writing for names, addresses, or docket numbers is a frequent problem. If the court clerk cannot decipher the information, it can lead to data entry errors on their end, misdirected mail, or rejection of the form. Using a tool like Instafill.ai can convert this non-fillable PDF into a cleanly typed, legible, and fillable document, eliminating this issue entirely.
Incomplete Attorney Contact Information
Leaving out a suite number, ZIP code, or a full telephone number with an area code can disrupt communication. The court and opposing counsel rely on this information to send notices and communicate about the case. Incomplete information can lead to missed deadlines and delays because the attorney cannot be reached.
Incorrect or Missing Signature Date
The date next to the signature is legally significant, as it establishes when the attorney made the certification. Using a future date (post-dating), a past date that doesn't align with the case timeline, or leaving it blank can create legal vulnerabilities. Opposing counsel could use date discrepancies to challenge the validity and timing of the filing.

Frequently Asked Questions About Appendix XI-U

 

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This plan is for your Appendix XI-U: your own AI agent fills it as often as 5 times a month. To fill other forms and upload your own, choose a Professional plan from your account.
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How does the AI fill out Appendix XI-U?
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-U, 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-U to fill out?
Appendix XI-U has a Form Complexity Index of 24 out of 100, in the simple tier: 12 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's Attorney (Appendix XI-U) form?
This form is used by a landlord's attorney in a New Jersey eviction case to certify that any charges beyond base rent, such as late fees or legal costs, are legally permissible to be included as 'rent' in the action.
Who is required to fill out and sign this form?
The landlord's attorney must complete and sign this form. It is a professional certification made by the legal representative, not by the landlord themselves.
When is this form filed?
This certification is filed with the Superior Court of New Jersey, Special Civil Part, as part of a landlord-tenant eviction case where the landlord is seeking to recover more than just the base rent.
What kind of 'charges and fees' does this certification cover?
This refers to any costs sought in addition to the monthly base rent, such as late fees, attorney's fees, or other charges that the lease specifies are to be treated as 'additional rent'.
Why does the form have a notice about not including personal identifiers?
This form is a public document, so to protect privacy and prevent identity theft, you must not include sensitive information like Social Security numbers, driver's license numbers, or active financial account numbers.
Where do I find the Docket Number for this form?
The Docket Number is assigned by the court when the landlord-tenant complaint is first filed. It will be present on all official court documents related to the case and typically begins with 'LT'.
What does the attorney's signature on this form signify?
By signing, the attorney certifies that they have reviewed the relevant laws and the written lease and have concluded, in their professional opinion, that the extra fees being sought are legally chargeable as rent.
What happens if an attorney makes a willfully false statement on this form?
The form explicitly warns that an attorney who knowingly makes false statements on this certification is subject to punishment, highlighting the legal seriousness of the document.
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 like your name, attorney ID, and case details, which saves time and helps prevent errors.
How can I use Instafill.ai to complete this form online?
Simply upload the Appendix XI-U PDF to the Instafill.ai platform. The AI will identify all the fields, allowing you to fill them out quickly and generate a completed document ready for review and signature.
The PDF copy of this form I have isn't fillable. What can I do?
You can upload the flat, non-fillable PDF to a service like Instafill.ai. It can convert the document into an interactive, fillable form that you can complete and save digitally.
Can a landlord representing themselves (pro se) use this form?
No, this specific form is a certification to be made by an attorney. A pro se landlord cannot sign a document stating 'I am the attorney for the landlord in this matter'.
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