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Neighbour's Smoke, Fire Pit or Cannabis Odour: Your Rights in Ontario

Drifting smoke or odour from a neighbour's fire pit or cannabis? Learn how Ontario burning rules, bylaws and nuisance law apply and what to do.

Real Estate4 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • Provincial outdoor fire rules apply in Northwestern, Northeastern and North-Central Ontario, and elsewhere you need to check municipal bylaws.
  • Fire season runs April 1 to October 31, and a permit is generally required to burn wood, brush, leaves or grass unless all conditions are met.
  • Smoke or odour can be a private nuisance only if the interference is substantial and unreasonable.
  • The duty to stop a nuisance falls on the party creating it, not the victim.

Smoke drifting through your windows from a neighbour's backyard fire, or the smell of cannabis on your balcony, can make time at home unpleasant. It is hard to know whether you have any legal footing, and which rules even apply where you live.

This article explains how Ontario's outdoor burning rules work at a high level, why your municipality's bylaws often matter most, and how nuisance law looks at smoke and smell. It is general information, not advice on your situation.

Which burning rules apply where you live

Ontario's outdoor fire rules, under the Wildland Fire Management Act and O. Reg. 43/26, apply in Northwestern, Northeastern and North-Central Ontario. In other parts of the province, you should check municipal bylaws.

That means that for much of southern Ontario, your municipality's own rules on open-air burning, fire pits and fire bans are the first thing to look up. They vary, so call your municipality or fire department, or check its website.

Fire season and permits

In the areas the provincial rules cover, fire season runs April 1 to October 31. A permit is generally required to burn wood, brush, leaves or grass unless all of the stated conditions are met.

The no-permit conditions apply to pile burning. They are listed in the table below, and incorporated municipalities may impose additional conditions or permits.

No-permit pile burning conditionRequirement
Start timeNo earlier than 2 hours before sunset.
Extinguish byNo later than 2 hours after sunrise.
Number of pilesOne pile at a time.
SizeUnder 2 metres in diameter and height.
DistanceAt least 2 metres from flammable materials.
SupervisionTended until out.

These conditions describe pile burning of material like brush. They do not tell you whether a backyard fire pit is allowed where you live. That depends on local bylaws.

Smoke and odour as a private nuisance

Whatever the bylaws say, you may also have a private nuisance claim if the smoke or smell interferes with your use or enjoyment of your home. The interference must be both substantial and unreasonable. Reasonableness depends on the circumstances, including locality, and factors include malice, frequency, duration and time of day.

In an Ontario noise nuisance case, the Court of Appeal upheld a permanent injunction and held that the obligation to abate a nuisance falls on the party creating it, not the victim. The case was about noise, but the idea applies in the same way to anyone creating a nuisance.

What about cannabis odour?

How cannabis odour is treated depends on the facts, your building and your municipality, so it is worth confirming with a lawyer. Other rules may also apply, such as condo declarations and rules, rental lease terms and municipal bylaws. Those depend on your building and municipality, so read your own documents and speak to a lawyer if you are unsure.

If you live in a condominium or rental building, the first route is often the property manager or landlord, who can enforce the building's rules.

What to do next

If there is a fire that looks out of control, or a danger to people or property, call 911 rather than relying on any of the steps above.

Frequently asked questions

Can my neighbour burn leaves or brush in Ontario?

It depends on where you live. In the areas covered by provincial rules, a permit is generally required to burn wood, brush, leaves or grass unless all conditions are met. Elsewhere, municipal bylaws apply.

Is a backyard fire pit allowed?

The provincial no-permit conditions describe pile burning, and incorporated municipalities may add conditions or permits. Whether a fire pit is allowed in your area depends on local bylaws, so check with your municipality.

Can smoke or smell be a nuisance in law?

Yes, if the interference with your use and enjoyment is both substantial and unreasonable. A court considers locality, malice, frequency, duration and time of day.

Who must stop a nuisance, me or my neighbour?

In a noise nuisance case, the Court of Appeal held that the obligation to abate a nuisance falls on the party creating it, not the victim. You are not generally expected to solve the problem for them.

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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