N6 vs N7: Illegal Acts vs Serious Problems, Explained
How Ontario's two most serious conduct-based notices differ, and why neither is generally voidable.
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What an N6 notice covers
An N6, Notice to End your Tenancy for an Illegal Act or Business, is used when a landlord believes the rental unit has been, or is being, used for an illegal act or business, or when the landlord believes the tenant has misrepresented income to qualify for rent-geared-to-income housing. The "illegal act" ground covers a wide range of conduct, from using the unit to produce or sell illegal drugs to operating an unlicensed business out of the unit in a way that breaches municipal law. It's a notice aimed squarely at conduct the law itself prohibits, not merely conduct the landlord finds objectionable.
Because the ground is "illegal," the notice doesn't require a criminal conviction before it can be served — the landlord generally only needs a reasonable basis for believing the illegal act occurred or is occurring, though proving that belief at a hearing is a separate matter entirely from simply asserting it on the form.
Key point
An N6 is about the unit being used for something unlawful. An N7 is about serious harm, damage, or danger caused by the tenant or their guest. Both are treated by the RTA as serious enough that a tenant generally cannot simply undo the notice by fixing the problem afterward.
What an N7 notice covers
An N7, Notice to End your Tenancy for Causing Serious Problems in the Rental Unit or Residential Complex, is reserved for conduct that is more serious than ordinary N5-level interference or damage. It generally applies to situations such as wilfully causing significant damage, seriously impairing the safety of another person, or conduct that makes the unit or complex unsafe for the landlord or other tenants. The threshold is meaningfully higher than an N5: an N7 is intended for genuinely serious incidents, not routine disputes between neighbours or minor property damage.
Because of that higher threshold, landlords sometimes reach for an N7 when an N5 would actually be the more appropriate and defensible notice. Using the wrong notice for the severity of the conduct involved can weaken an application if it proceeds to a hearing, since an adjudicator still has to be satisfied the facts actually meet the higher N7 standard.
The key differences between N6 and N7
The clearest way to separate the two is to ask what kind of harm is at issue. An N6 is concerned with unlawful activity — the conduct itself breaches some other law, regardless of whether anyone was physically hurt or any property was damaged. An N7 is concerned with serious harm or danger, regardless of whether any law outside the RTA was technically broken. A tenant running an unlicensed business that nobody finds disruptive could still face an N6; a tenant who causes serious property damage through carelessness, without doing anything independently illegal, could still face an N7.
Both notices sit above the N5 in terms of severity, and both are generally treated by the LTB as warranting a closer look at whether the tenancy should continue at all, rather than whether a specific behaviour can simply be corrected.
Notice periods and timing
Both an N6 and an N7 generally require a minimum notice period before the termination date set out on the form — in most cases, 10 days. This is shorter than the periods that generally apply to less severe notices like an N8, which reflects how the RTA treats illegal acts and serious safety problems as warranting a faster path toward an application, given the potential risk to others if the conduct continues.
The termination date on the notice has to be calculated correctly from the date of service, and landlords should be careful that the notice period isn't shortened, even informally, since an incorrectly dated notice can become a point of challenge later.
Why neither notice is generally voidable
Unlike a first-time N5, neither an N6 nor an N7 generally comes with a built-in "correct the behaviour and the notice disappears" mechanism. The RTA treats illegal acts and serious safety problems as categories of conduct too serious to simply forgive through later compliance. That doesn't mean a tenant has no defence at a hearing — it means the defence generally has to be about whether the conduct actually happened or actually meets the legal threshold, rather than about having since stopped or fixed the problem.
Common misconception
Tenants sometimes assume that because they've stopped the behaviour named in an N6 or N7, the notice is automatically void the way a first N5 can be. That assumption generally doesn't hold for these two notices, which makes understanding and, where appropriate, contesting the underlying allegation far more important.
What follows an N6 or N7
If the notice period passes, the landlord may file an L2 application with the LTB asking the Board to terminate the tenancy and evict the tenant. A hearing is generally scheduled where the landlord has to prove, on the evidence, that the ground relied on actually occurred and meets the threshold for that specific notice. Because both grounds carry serious implications, hearings on N6 and N7 applications often involve closer scrutiny of the evidence than more routine rent-arrears matters.
Common real-world scenarios
N6 scenarios commonly involve allegations tied to illegal drug activity, unlicensed short-term rentals that breach municipal bylaws, or misrepresented income in subsidized housing contexts. N7 scenarios more often involve serious safety incidents — threats or violence toward another occupant, major damage caused recklessly, or conduct that genuinely endangers others in the building. In both cases, landlords generally need more than a suspicion or a single ambiguous incident; the LTB looks for evidence that actually supports the specific allegation made on the notice.
A landlord relying on an N6 for an alleged illegal business, for example, generally needs more than a neighbour's complaint about unusual foot traffic — municipal bylaw enforcement records, a licensing complaint, or direct evidence of the activity tends to carry far more weight at a hearing. Similarly, an N7 alleging that a tenant seriously endangered another occupant's safety generally benefits from police incident reports, photographs of damage, or statements from witnesses who observed the event directly, rather than a general characterization of the tenant as "dangerous" or "difficult." The more a landlord's evidence ties directly to the specific legal threshold for the notice served, the stronger the eventual application tends to be.
Practical steps for landlords and tenants
Landlords considering an N6 or N7 generally benefit from documenting the specific conduct carefully before serving the notice — dates, witnesses, police reports where relevant, and anything else that supports the allegation — since these notices tend to draw more scrutiny at a hearing than lower-severity ones. Because both notices carry serious consequences for the tenant and require a higher evidentiary bar from the landlord, it's generally worth pausing before serving either one to confirm the facts actually meet the specific ground, rather than assuming severity alone justifies the stronger notice.
Tenants who receive either notice are generally well served by seeking advice quickly, since the stakes are high and the available defences usually turn on disputing the facts rather than on a simple cure. Keeping any evidence that contradicts the allegation, including witness accounts, timestamps, or records showing the conduct didn't occur as described, matters a great deal if the matter proceeds. Tenants should also pay close attention to the specific wording used on the notice itself, since an N6 or N7 that doesn't clearly identify the alleged conduct, or that mischaracterizes a lower-level issue as something far more serious, can itself become a point worth raising at a hearing.
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
An N6 addresses illegal acts or businesses conducted from the unit, or income misrepresentation. An N7 addresses serious damage or safety problems, independent of whether a separate law was broken.
Generally no. The landlord needs a reasonable basis to serve the notice, but still has to prove the allegation on the evidence if the matter reaches a hearing.
Generally 10 days from the date the notice is served, though the exact termination date is set out on the notice itself.
Generally no. Unlike a first-time N5, an N7 doesn't come with a built-in cure provision, though repairs made may still be relevant context at a hearing.
Generally an L2 application, which asks the LTB to terminate the tenancy and order eviction based on the ground named in the notice.
It depends on whether the specific activity is actually illegal or breaches another law or bylaw; lawful personal use generally would not, by itself, support an N6.
Generally conduct like wilful significant damage or seriously impairing the safety of another person — a meaningfully higher bar than ordinary N5-level interference or damage.
No. They overlap in subject matter but an N7 is reserved for more serious conduct and generally lacks the N5's first-occurrence cure provision.
Yes, this is one of the specific grounds covered by an N6, separate from the illegal-act ground.
Generally, seek advice quickly, review the specific allegation on the notice, and gather any evidence relevant to disputing it before a hearing is scheduled.
Related reading
Reviewed by Ryan J. Manilla, BA, JD
Legal Reviewer · Landlord Tenant Ontario