What to Do If the Other Party Doesn't Disclose Evidence on Time
Options when the other side misses a disclosure deadline.
Insights · LTB Hearings & Process
On this page
- Why disclosure deadlines exist
- What counts as late or missing disclosure
- First steps if a deadline has already passed
- Raising the issue at the hearing itself
- How an adjudicator may respond to late disclosure
- When requesting an adjournment makes sense
- If new evidence appears for the first time at the hearing
- Protecting your own position going forward
Why disclosure deadlines exist
Disclosure deadlines at the LTB generally exist to make sure both parties know, well before the hearing, what evidence and documents the other side intends to rely on. The idea is to avoid a hearing turning into an ambush, where one party shows up with documents or photos the other has never seen and has no real chance to respond to on the spot. Depending on the type of application, the Board's rules or a specific order may set out when evidence needs to be exchanged and filed with the LTB ahead of the hearing date.
When one side doesn't meet that deadline, it can feel deeply unfair, especially if you've been diligent about meeting your own obligations. The good news is that the LTB generally has tools to address this, though how it gets addressed depends a lot on timing, the nature of the missing evidence, and how the issue is raised.
It's worth separating genuine unfairness from simple frustration at a short delay. A party who files their materials a day or two late but still gives you a real opportunity to review them before the hearing has generally caused far less practical harm than a party who discloses nothing until the hearing has already started, even though both technically missed the same deadline.
What counts as late or missing disclosure
Late disclosure generally covers a few different situations: evidence filed after the deadline set out in the Board's directions, evidence never filed or shared at all despite an obligation to do so, or evidence shared with the LTB but not properly provided to the other party. Each of these generally raises slightly different concerns — evidence filed a day late is usually a smaller problem than evidence sprung on you for the first time at the hearing itself, with no advance notice whatsoever.
It's worth checking the specific directions that came with your Notice of Hearing, since disclosure requirements and deadlines can vary by case type, and knowing exactly what was required of the other side is the first step in identifying whether something has actually gone wrong procedurally.
Key point
Late disclosure doesn't automatically mean that evidence gets thrown out. The adjudicator generally has discretion to decide how to handle it, weighing fairness to both sides.
First steps if a deadline has already passed
If a disclosure deadline passes and you haven't received what you were expecting, it's generally worth first reaching out directly — in writing, where possible — to ask when the materials will be provided, and keeping a copy of that request. This creates a clear record showing you tried to resolve the issue before the hearing, which matters if you later need to raise it with the adjudicator. If there's still no response, checking whether the LTB itself has received anything the other party may have filed directly with the Board is also worthwhile, since sometimes materials are filed but not properly shared with the other party.
Depending on how much time remains before the hearing, it may also be worth notifying the LTB in writing about the missed deadline, so there's a record on file even before the hearing day arrives.
Raising the issue at the hearing itself
If the matter wasn't resolved beforehand, raising it clearly and promptly at the start of the hearing is generally the right approach, rather than waiting to see how things unfold. Explain specifically what was supposed to be disclosed, by what deadline, and what, if anything, you actually received. Being specific and factual tends to be more persuasive than a general complaint about unfairness — the adjudicator needs concrete details to decide what, if anything, to do about it.
It generally helps to have your own records of any attempts to follow up with the other party, since showing you made a reasonable effort to resolve the issue before the hearing day tends to strengthen your position when asking the adjudicator to address it.
How an adjudicator may respond to late disclosure
An adjudicator faced with late or missing disclosure generally has a range of options, and the response tends to depend on how serious and prejudicial the lateness actually is. In less serious cases, the hearing may simply proceed, with the adjudicator deciding how much weight to give to evidence that wasn't properly disclosed, sometimes giving it less weight precisely because the other side didn't have a fair chance to respond. In more serious cases, the adjudicator may decide to exclude the late evidence from consideration entirely, or adjourn the hearing to a later date to give the disadvantaged party a genuine chance to review and respond to it.
There's no fixed rule that guarantees one outcome over another — the decision generally comes down to balancing fairness to both sides against the Board's interest in resolving matters without unnecessary delay.
Common misconception
Some assume that missed disclosure automatically means the other side's whole case gets thrown out. In practice, the response is generally proportionate to the problem, and a hearing often still proceeds in some form.
When requesting an adjournment makes sense
Requesting an adjournment because of late disclosure tends to make the most sense where the missing evidence is genuinely significant to the case and reviewing it properly would take real time — not simply because the paperwork arrived a day or two after the deadline with no real impact on your ability to respond. Adjudicators generally weigh the request against the disruption an adjournment causes, including further delay for both sides and the Board's broader scheduling pressures.
If you do request an adjournment on these grounds, explaining specifically what you'd need the extra time for — reviewing a specific document, gathering a response, consulting with a representative — tends to be more persuasive than a general request for more time.
If new evidence appears for the first time at the hearing
Sometimes the problem isn't a missed deadline on paper, but evidence that genuinely surfaces for the first time at the hearing itself — a document, photo, or witness nobody mentioned beforehand. In this situation, it's generally reasonable to object on the spot and ask the adjudicator to either exclude the evidence or give you a meaningful opportunity to review and respond to it, which might mean a short adjournment within the hearing or to a later date, depending on how significant the material is.
Staying calm and specific in that moment matters. Pointing out exactly why the surprise evidence is prejudicial — because you had no chance to prepare a response, verify it, or bring your own counter-evidence — gives the adjudicator a clear basis to act on your objection.
Protecting your own position going forward
Beyond handling a specific instance of late disclosure, it's worth taking a few preventative steps for any ongoing or future LTB matter: keep a clear written record of what was disclosed and when, confirm receipt of anything sent to the other party, and don't assume silence means compliance — follow up in writing if a deadline passes without the expected materials. These habits don't just help if a problem arises; they also demonstrate to an adjudicator that you've approached the process diligently and in good faith, which can matter when credibility becomes relevant elsewhere in the case.
It's also worth building in a buffer of your own rather than planning to disclose at the very last permitted moment. Submitting your own materials a little ahead of the deadline, where practical, reduces the chance that an unexpected delay on your end turns into its own disclosure dispute, and it generally sets a more cooperative tone for the rest of the proceeding.
Our deadline checker can help track disclosure and other key dates throughout an LTB matter.
This article provides general information about Ontario landlord and tenant law.
It is not legal advice. For advice about a specific situation, consult a licensed
paralegal or lawyer, or contact the Landlord and Tenant Board.
Frequently Asked Questions
The adjudicator generally has discretion to proceed, give the late evidence less weight, exclude it, or adjourn the hearing, depending on how serious the impact is.
Generally not automatically. Whether evidence is excluded depends on the circumstances and how prejudicial the lateness actually is to the other side.
Generally, it's best to raise it as soon as you notice it, ideally in writing before the hearing, and again at the start of the hearing if it hasn't been resolved.
Generally, yes, particularly where the missing evidence is significant. The adjudicator weighs the request against fairness and overall scheduling pressures.
You can generally object on the spot and ask the adjudicator to exclude it or give you a meaningful chance to review and respond before it's considered.
Generally not actively — it's each party's responsibility to meet the deadlines set out in the Board's directions or Notice of Hearing.
Generally not a dedicated form — raising it in writing to the LTB and at the hearing itself is typically the practical approach rather than a separate complaint process.
Generally, being upfront about it, explaining the reason, and sharing the materials as soon as possible tends to go over better than waiting for it to be raised against you.
It can be a relevant factor in some cases, though it's generally treated as a separate procedural issue from the underlying credibility of the parties' accounts.
In limited circumstances, a serious disclosure or procedural fairness issue may support a request to review the order, though this is a narrower path than raising it at the hearing itself.
Related reading
Reviewed by Ryan J. Manilla, BA, JD
Legal Reviewer · Landlord Tenant Ontario