The Request to Extend Deadline is the Ontario Landlord and Tenant Board (LTB) form for asking permission to file something after its deadline has passed. A landlord most often needs it for a late Request to Review an Order, a late Request to Amend an Order or a late S3 motion, and it only works for deadlines the law allows the LTB to extend.
At a glance
| Who uses it | Any landlord, tenant or other party in an LTB proceeding |
| When | As soon as you realize a deadline has passed (or is about to) |
| Deadline | None of its own, but it must be filed together with the late document in most cases |
| How it is filed | Tribunals Ontario Portal, email to LTB@ontario.ca, mail, courier or ServiceOntario |
| Filing fee | None listed on the LTB fee schedule; the late document carries its own fee |
| Follow-on form | The late motion, request or application itself |
What the request is for
The LTB may extend or shorten time requirements in its proceedings "other than the prescribed time requirements" (RTA s. 190(2)). Rule 16 of the Rules of Procedure sets the procedure: the request must be in writing, give reasons, and be filed as the Rules require (Rule 16.1). If it is granted, the late document is treated as received on the date you filed it (Rule 16.7).
Deadlines a landlord can ask to extend include (official instructions; Rules):
- Landlord's motion to set aside an order voiding an eviction (S3): 10 days after the order (RTA s. 74(9)).
- Request to Amend an Order: 30 days (Rule 24.1).
- Request to Review an Order: 15 days for orders issued on or after July 1, 2026, 30 days for earlier orders (RTA s. 209(3); Rules 26.4–26.6).
- Request to re-open an application resolved by a mediated settlement: one year after signing (Rule 13.12).
- Deadlines for written submissions or evidence set in an LTB order or direction.
- Landlord's request to review a municipal work order (20 days, s. 226(1)) and the mobile home assignment application (s. 159(2)).
When to use it (and when not to)
The LTB cannot extend the time requirements listed in O. Reg. 516/06, s. 56. For landlords the important ones are:
- Every notice period for terminating a tenancy. A short N4, N5 or N12 cannot be cured by an extension.
- Deadlines for filing applications, other than the few s. 190(1) expressly allows (AGI, s. 159(2), s. 226). The instructions say the LTB cannot extend time to file an L3 or an L4.
- The 30-day limit in s. 206(6) to re-open a s. 206 consent order after the tenant misses a payment.
- The 90-day notice of rent increase and the 12-month rule.
If your deadline is on that list, an extension request will be refused and you need a fresh notice or a different route.
Deadlines and limitation periods
- File it with the late document. For S3 motions, tenant set-aside motions, amend requests, review requests, work-order reviews and the mobile-home application, Rule 16.2 requires the extension request to be filed together with the motion or request, absent exceptional circumstances. Guideline 8 says the LTB will not consider a review extension made on its own.
- If you file it alone and it is granted, the LTB will set a date to file the document and pay any fee; miss it and the document is refused (Rule 16.3).
- One try. If refused, you cannot ask again for the same deadline unless there has been a significant change in circumstances (Rule 16.6).
- Count correctly before asking. Days are calendar days, excluding the first and including the last, and a deadline landing on a weekend or LTB holiday moves to the next business day (Rules 1.12–1.14). You may not need an extension at all.
How to fill out the Request to Extend Deadline, section by section
The current form is version 2026/07.
- File Number, language and accommodation. Enter the LTB file number at the top.
- Requesting Party's Information. Name, company, email, phone, mailing address and your preferred way to receive documents.
- Unit, Building or Complex. The full rental unit address.
- "I am requesting that the LTB extend the deadline to..." Tick one: file a Request to Review an Order, file a Request to Amend an Order, file a Request to Re-open an Application resolved by mediation, file a Motion to Set Aside an Ex Parte Order, or "other". A landlord's S3 motion goes under "other"; name it.
- Explain the reasons. This box decides the request. Address the Rule 16.4 factors in order: how long the delay was and exactly why; prejudice to you if refused and to the other party if granted; how any prejudice could be fixed; and your good faith. Give dates. Attach documents (for example, proof the order went to a wrong address). Medical notes should give the condition, its effect on your ability to act, and the expected recovery date. For a late review, the LTB may also look at the merits of the review (Guideline 8).
- Signature. Tick landlord, landlord representative or other, sign and date. A legal representative adds their Law Society number and contact details.
Filing it
Use the Portal if the file is there; you can also email LTB@ontario.ca, mail or courier it to 15 Grosvenor Street, Ground Floor, Toronto, ON M7A 2G6, or deliver it to a ServiceOntario centre that accepts LTB documents. Lawyers and paralegals must use the Portal for a Request to Extend Deadline that has no other request attached (Practice Direction on licensees). A late review request follows the review's own filing route (email with the online fee receipt). The instructions say a letter or email can replace the form if it names the file, the deadline and the reasons, but the form is recommended.
Mistakes that get it refused, voided or dismissed
- Asking to extend a prescribed deadline. Notice periods, most application filing deadlines and the s. 206(6) re-open window cannot be extended (O. Reg. 516/06, s. 56).
- Filing the extension without the late document. Rule 16.2 requires them together; a bare extension request for a review will not be considered.
- No real reason for the delay. "I was busy" or "I didn't read the order" rarely outweighs the other party's interest in finality.
- No supporting documents. The form warns that failing to include them may lead to denial.
- Holding back evidence for a second try. A further request needs a significant change in circumstances and cannot be used to add reasons you could have given the first time (Rule 16.6).
- Relying on the old instructions for review timing. The January 2025 instructions still describe a 30-day review deadline; for orders issued on or after July 1, 2026 it is 15 days (RTA s. 209(3)).
- Waiting longer. Every extra day adds to "length of the delay" and weakens the good-faith factor.
What happens next
A Member decides the request, often without asking the other parties for submissions (Rule 16.5), and marks it granted or denied with reasons. If granted, your late document is processed as filed on the date you filed it. If denied, the standard deadline applies and the late document is not accepted.
Recent changes
The review deadline the form most often attaches to fell from 30 to 15 days on July 1, 2026 (Bill 60, RTA s. 209(3)), and Rule 26.6 now cross-references both review deadlines. The form was updated to version 2026/07, but the separate instructions are still dated January 2025.
Frequently asked questions
Is there a fee for a Request to Extend Deadline?
The LTB fee schedule does not list one. If the document you are filing late has a fee, such as the $58 review fee, that fee still applies.
I missed the 30 days to file an L4. Can I extend it?
No. The instructions state the LTB cannot extend time to file an L4 (s. 78) or L3. Ask whether a request to re-open the original application is still available.
How late is too late?
There is no fixed cut-off. The Member weighs the length of and reason for the delay, prejudice, good faith and other relevant factors; longer, unexplained delays are refused more often.
Can the LTB extend the time on my N4?
No. Notice periods for ending a tenancy are prescribed and cannot be extended (O. Reg. 516/06, s. 56). Serve a new, correct notice.