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How to File a T6 Application for Maintenance Problems in Ontario

Landlord not fixing problems in your Ontario rental? Learn how a T6 application works at the Landlord and Tenant Board, how to prepare and what to expect.

Real Estate4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 13, 2026
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Key takeaways
  • Most Ontario rental units are covered by the Residential Tenancies Act, 2006.
  • The Tribunals Ontario Portal is encouraged for T6 applications.
  • Your evidence must be disclosed 7 days before the hearing, or you may be barred from relying on it.

Leaks, broken heat, pests or other unrepaired problems can make a home hard to live in. If your landlord has not dealt with them after you asked, a T6 application to the Landlord and Tenant Board (LTB) is one way to seek a decision about repairs and rent.

This article explains how to prepare, how to file and what to expect in the process. What the LTB orders, including any repair order or rent reduction, depends on the facts of your case, so a lawyer or tenant legal clinic can help you assess it.

Is your home covered?

The Residential Tenancies Act, 2006 covers landlords and tenants of most rental units, including apartments, houses and rooms in rooming or boarding houses. Non-profit, public, university and college residences are still covered by most of the Act's other rules, such as maintenance and eviction.

The Act does not apply if you must share a kitchen or bathroom with the owner or the owner's family members. If you are not sure, ask a legal clinic or lawyer before filing.

Build your case before you file

The LTB decides based on evidence, so start with a clear record of the problem and of your efforts to get it fixed.

Written requests are usually more helpful than phone calls because they show dates and what you asked for.

Filing your T6 application

The Tribunals Ontario Portal can be used to submit applications, check file status, upload evidence and see whether an order has been issued, and it is encouraged for T6 applications. You can also file in person at ServiceOntario locations (filing only), or by mail or courier to 15 Grosvenor Street, Ground Floor, Toronto, ON M7A 2G6.

For questions about the process, you can call the LTB toll-free at 1-888-332-3234, Monday to Friday 8:30 a.m. to 5:00 p.m.. Staff give information but not legal advice.

Waiting, hearing and evidence rules

The LTB says hearings for most application types other than L1 and L9 are scheduled 5 to 7 months out, and most decisions issue within 30 days of the hearing. These times were stated by the LTB and may have changed. Wait at least two months after filing before checking status.

Your evidence must be disclosed 7 days before the hearing, and responding evidence 5 days before, unless the LTB orders otherwise. A party who does not comply may be barred from relying on that evidence, and filing evidence does not make it admissible, because the Member decides. Hearing evidence can be emailed to LTB.Evidence@ontario.ca with the file number and hearing date in the subject line, or uploaded through the portal.

StepWhat to do
Before filingCollect photos, written requests and receipts
FilingUse the portal, ServiceOntario or mail
Before hearingDisclose evidence 7 days ahead
After the orderConsider review or appeal deadlines

What to do next

Frequently asked questions

Do I have to use the online portal?

No. The portal is encouraged for T6 applications, but you can also file in person at a ServiceOntario location or by mail or courier to the LTB's Toronto address.

Will I get a rent reduction or repair order?

That depends on the facts and on what the LTB finds at the hearing. A lawyer or tenant legal clinic can help you judge what to ask for.

How long will it take?

The LTB says hearings for most application types other than L1 and L9 are scheduled 5 to 7 months out. Most decisions issue within 30 days of the hearing.

Can I change an order I disagree with?

There are three routes: a Request to Amend, a Request to Review, or an appeal to the Divisional Court. For orders issued on or after July 1, 2026, a review request must be filed within 15 days.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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