How to Fill Out and File the LTB Certificate of Service (Ontario)

The LTB Certificate of Service is a one-page form that proves the other party in your rental dispute received your legal documents; you complete it, attach it to your application, and file both together through the Tribunals Ontario Portal or by mail. The adjudicator reviews it at the start of the hearing, and if the certificate is missing, unsigned, or inconsistent with the notice period required, the Board can dismiss the application before it hears the merits.

Where to Get the Form

Download a fresh copy of the Certificate of Service from the Tribunals Ontario website.¹ The same form sits in Ontario’s Central Forms Repository under form number 004-3041.² Don’t reuse an old PDF. Layouts change, and the Board expects the current version. You can complete it on-screen with Adobe Reader or print it and fill it in by hand.

Filling Out Each Field

The form is short, but every field feeds the adjudicator’s decision on whether service was valid.¹

File number. Enter the LTB file number for your application. Leave it blank if you’re filing the application and certificate together; the Board will assign one.
Address of rental unit. Full municipal address including unit number and postal code. It must match the address on your application exactly.
Date of service. The date you actually delivered the documents, in dd/mm/yyyy format. This is the date the documents left your hands, not the date the Board deems them received.
Documents served. Check the box that matches what you served: Notice of Termination (with form number, such as N4, N12, or N13), Application (such as L1 or L2), Motion to Set Aside an Ex Parte Order, Request to Review an Order, Notice of Hearing, or Other. If you check Other, write in the document name.
Recipient. Indicate whether you served the tenant, the landlord, or another person. If you served multiple tenants on the same application on the same day by the same method, check that option and attach a list of names and addresses.
Method of service. Select exactly how you delivered the documents from the listed choices.
Signature and role. The person who physically performed the service signs and dates, then checks their role: landlord, tenant, representative, or other. Also fill in first name, last name, and phone number.

The signature has to come from whoever actually delivered the documents. If your property manager handed the notice to the tenant, the property manager signs, not you. A property manager who isn’t the landlord checks “other” for their role.

Methods of Service the Board Accepts

Rule 3 of the LTB Rules of Procedure lists every permitted way to deliver documents.³ If your method isn’t on this list, the Board won’t accept the certificate.

Hand delivery directly to the person.
Hand delivery to any apparently adult person in the rental unit if the tenant isn’t home.
Hand delivery to the landlord’s authorized employee, for documents going to a landlord.
Leaving the documents at the person’s mail delivery point.
Sliding under the door or through the mail slot, but only while the person still occupies the unit.
Regular or registered mail to the person’s last known address.
Courier to the person’s address.
Fax, only if the document is under 20 pages or the recipient consents to a longer fax.
Email, only if the recipient has consented in writing. The consent can appear in the standard lease, in a separate signed form, or in any written agreement. The Board publishes a Consent to Service by Email form for this purpose, but you’re not required to use it.⁴
Upload to the Tribunals Ontario Portal, only if the recipient has consented in writing to service through the portal.³

Anything outside these methods doesn’t count. Taping a notice to a fence, leaving it on a windshield, or texting a photo isn’t service. Rule 3.4 lets you ask the Board for permission to use an alternative method using an LTB-approved form or at the hearing itself.³ If the tenant has already left the unit, that request has to be made at least 40 days before the hearing.

When the Board Treats Documents as Received

The date you dropped documents in the mail isn’t the date the Board treats them as served. Rule 3.9 sets deemed-receipt dates that vary by method, and these directly affect whether your notice period is long enough.³

Hand delivery: the day you handed the documents over.
Regular or registered mail: the fifth day after mailing.
Courier: the day after you gave the documents to the courier, or the next non-holiday day if that falls on a holiday.
Fax: the date on the fax confirmation receipt.
Email: the day it was sent.
Tribunals Ontario Portal: the day it was uploaded.

This is where most people miscalculate. An N4 Notice to End a Tenancy for Non-payment of Rent has to give a monthly or yearly tenant a termination date at least 14 days after they receive the notice.⁵ Mail it by regular post and the Board adds five days for deemed receipt, so you effectively have to mail it at least 19 days before the termination date.⁶ Hand it directly to the tenant and 14 days is enough. Miscount by a single day and the Board will find the notice period insufficient and dismiss the application.

Filing the Certificate With Your Application

The Certificate of Service isn’t a standalone filing. It goes in with your application, and there’s no separate fee for the certificate itself. You pay the application fee: $186 through the Tribunals Ontario Portal for most landlord applications (L1, L2, L3, L9, or L10), or $201 if you file by mail or in person.⁷ Tenant applications are $48 online or $53 by mail.

Through the Tribunals Ontario Portal

The portal is the Board’s preferred filing method.⁸ Once you’ve started or opened your application, go to the upload screen and attach the completed certificate as a document. The portal asks you to confirm the method of service, who served the documents, and the date. After upload, the certificate appears in the Document Manager tied to your file number.

By Mail or Courier

If the portal isn’t available or you prefer paper, send the certificate with your application by courier or Canada Post. Courier submissions go to the Landlord and Tenant Board at 15 Grosvenor Street, Ground Floor, Toronto, ON M7A 2G6. Regular mail goes to the regional office closest to the rental unit; the Board lists office addresses on its contact page.⁹ Write your file number clearly on every page so the Board can match the certificate to the right file.

Mistakes That Get Applications Dismissed

The adjudicator looks at your Certificate of Service at the start of the hearing. A defect on the form can adjourn the hearing or kill the application. The errors that show up most often:

The wrong person signed. Whoever physically performed the service has to sign. If your property manager delivered the notice and you signed the certificate, service is defective.
Names don’t match. The tenant or landlord name on the certificate has to match the application and the notice exactly. A misspelling or a missing co-tenant can invalidate service.
The service date doesn’t leave enough time. If the date on the certificate, plus the deemed-receipt rule for the method used, doesn’t cover the required notice period, the Board will find the notice insufficient.
The wrong method is checked. Checking “hand delivery” when you actually mailed the documents changes the deemed-receipt calculation the Board relies on.
The form isn’t signed. An unsigned certificate is treated as if it doesn’t exist.

Any of these defects can force you to re-serve the documents, file a new certificate, and wait for a new hearing date. Providing false information on the certificate is more serious: an offence under the Residential Tenancies Act carries a fine of up to $25,000 for an individual or up to $100,000 for a corporation.⁷ Before you file, read the certificate back against the application and the notice one more time, and confirm the deemed-receipt math on the method you actually used.

1
Tribunals Ontario. Certificate of Service
2
Central Forms Repository. Certificate of Service
3
Tribunals Ontario. Landlord and Tenant Board – Rules of Procedure – Section: Rule 3
4
Tribunals Ontario. Consent to Service by Email
5
Tribunals Ontario. Form N4 – Notice to End a Tenancy Early for Non-payment of Rent
6
Tribunals Ontario. How to Serve a Landlord or Tenant with Documents
7
Tribunals Ontario. Forms, Filing and Fees
8
Tribunals Ontario. Tribunals Ontario Portal
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Tribunals Ontario. Contact the Landlord and Tenant Board