Arson
Arson is a forensic case — origin and cause, accelerants, and a fire-marshal's conclusion the defence must test.
- 30 yearsCriminal defence practice in Ontario
- Called 1997Bar of Ontario
- LSO #51731AVerify on the LSO directory
- All courtsThrough the Court of Appeal for Ontario
- 24/7Personal intake · (416) 599-1900
What does an arson lawyer in Toronto do differently?
An arson lawyer in Toronto challenges the fire science first: whether the origin-and-cause conclusion is reliable, and whether the fire can be linked to the accused at all. Aaron M. Spektor, admitted at every level of Ontario court through the Court of Appeal, has defended serious charges for 30 years and works with independent fire experts. Arson disregarding human life carries a maximum of life imprisonment, so the defence must start early.
Answer by Aaron M. Spektor, criminal defence lawyer · LSO #51731A · called to the Bar of Ontario in 1997
- Charge
- Criminal Code ss. 433–436.1
- Max penalty
- Life (s. 433, disregard for human life)
- Where heard
- 10 Armoury St or Superior Court, 361 University
- Your lawyer
- Aaron M. Spektor · LSO #51731A · 30 years
What this practice is, and is not.
Arson prosecutions under sections 433 through 436.1 of the Criminal Code rest almost entirely on the fire-investigation report — origin and cause analysis, accelerant detection, and the elimination of accidental ignition sources. They are forensic cases, and they are defended forensically.
Aaron M. Spektor has defended arson cases up to and including arson endangering human life. The defence work begins with an independent assessment of the origin-and-cause conclusion — frequently retaining a defence fire investigator — and continues through identification, motive, and the alternative-cause analysis the original investigation often skipped.
Arson convictions carry severe penalties, including the life-maximum exposure on s. 433. Every file deserves a full forensic challenge before any resolution position is taken.
Arson charges under sections 433 and 434 of the Criminal Code — including arson endangering life, damage to property, and arson for a fraudulent purpose — are treated very seriously and frequently rest on expert fire-cause-and-origin evidence that can be challenged by the defence.
Aaron M. Spektor defends arson cases with independent scrutiny of the fire investigation, the cause-and-origin analysis, and the circumstantial evidence the Crown relies on to link an accused to the fire.
Representative engagements.
- 01
Arson Endangering Life (s. 433)
Disregard for human life — indictable offence carrying life-maximum exposure, among the most serious property-related prosecutions in Canadian law.
- 02
Arson Damaging Property (s. 434)
Damage-to-property offences turning on intent, identification, and the fire-investigation conclusion.
- 03
Arson for Fraudulent Purpose (s. 435)
Insurance-related arson — frequently with parallel fraud and insurance-fraud charges.
- 04
Arson by Negligence (s. 436)
Charges based on a deviation from the standard of care — defended on the standard, the cause, and the deviation.
- 05
Independent Fire-Investigation Review
Retaining qualified defence experts to test the Crown's origin-and-cause conclusion.
- 06
Identification & Motive Defence
Where the Crown's case depends on circumstantial connection to the accused, defence focuses on identification and the absence of motive.
How we work this practice.
- 1
Pull the fire-investigation file.
Photos, accelerant samples, lab reports, fire-marshal notes, and witness statements — the full evidentiary footprint of the cause analysis.
- 2
Retain an independent investigator.
Defence experts regularly identify alternative ignition sources the original investigation excluded prematurely.
- 3
Test the connection to the accused.
Arson convictions require both the act of setting the fire and the identification of the accused as the person who did it. Both are contestable.
- 4
Try the case where appropriate.
Arson files do not respond to half-measures. Where the forensic challenge is strong, the case goes to trial.
Arson Lawyer Toronto: Charge Levels, Fire Science, Insurance Risk
The ladder of arson offences
The Code grades arson by risk and ownership. Under section 433, intentionally or recklessly damaging property by fire or explosion, while knowing or being reckless about whether it is inhabited or occupied, carries a maximum of life — whoever owns the property. Damaging property not wholly your own under section 434 carries up to fourteen years, as does damaging your own property in a way that seriously threatens another person’s health, safety or property. Arson for a fraudulent purpose carries up to ten years, and causing a fire by negligence up to five.
The insurance inference
If you held, or were a beneficiary of, a fire insurance policy on the property, section 435 allows the court to infer an intent to defraud from that fact. It is a permitted inference, not a presumption the defence must disprove, but it means financial records, mortgage arrears and the timing of policy changes often become central. Insurers run parallel investigations, and an examination under oath in the insurance claim can produce statements that later surface in the criminal case — speak to counsel before giving one.
How fire evidence is gathered and challenged
Serious or suspicious fires in Toronto are typically investigated by Toronto Fire Services and the Office of the Fire Marshal, working with Toronto Police. Debris samples go to the Centre of Forensic Sciences for ignitable-liquid testing. The leading investigative guide, NFPA 921, cautions against concluding a fire was deliberately set simply because accidental causes were not found — the so-called negative corpus approach. Where an investigator relied on elimination rather than positive evidence, that opinion is open to serious challenge.
Court path and consequences
Arson under sections 433 and 434 is indictable only, so you elect your mode of trial, and because section 433 carries life, a preliminary inquiry is available. Neither offence permits a discharge. Bail is frequently contested where an occupied building was involved — see our bail hearings page. Arson often travels with fraud charges and with civil subrogation claims brought by insurers. Arson cases often take longer to reach trial because of expert reports, so retaining a defence expert early keeps the timeline under control.
The legislation behind a arson charge.
Official text on the federal and Ontario legislation websites. Aaron M. Spektor reviews this page against the current law.
Things clients ask before retaining us.
If yours is not on this list, please ask. We answer every intake inquiry personally.
How is arson proven?
Through fire-investigation evidence (origin and cause), circumstantial identification (presence, motive, opportunity), and any direct evidence (admissions, eyewitness, video). The fire-investigation evidence is usually the most contestable.
Can the Crown prove arson without a witness?
Yes — many arson prosecutions are purely circumstantial. The Crown must exclude every other reasonable inference, which the defence challenges at trial through the alternative-cause analysis and the strength of the identification.
What if the fire was insurance-related?
Insurance-related arson typically involves parallel s. 435 and fraud charges. The civil insurance investigation produces its own discovery that is often relevant to the criminal defence. We coordinate with civil counsel where appropriate.
How long do arson cases take?
Most resolve within 18–30 months from charge, with extensive expert work in the middle period. Cases that proceed to trial typically run on the longer end of that range because of forensic complexity.
How serious is an arson charge?
Very. Arson endangering life is among the most serious property-related offences and can carry a lengthy prison sentence. Given the stakes, the fire investigation and the identity evidence must be examined closely from the outset.
Can a fire ruled 'arson' turn out to be accidental?
Yes. Cause-and-origin conclusions are opinions, and independent fire-science review sometimes shows a fire was accidental or that the cause is undetermined — which can be fatal to the Crown's case.
What if the fire was on my own property?
Arson can still be charged on your own property, particularly where an insurance claim is alleged (arson for a fraudulent purpose) or where life was endangered. These cases require careful, early defence.
What is the sentence for arson in Canada?
It depends on the type of arson charged. Under the Criminal Code, arson with disregard for human life (section 433) carries up to life imprisonment; arson damaging another’s property, or one’s own property where others are seriously threatened (sections 434 and 434.1), carries up to 14 years; arson for a fraudulent purpose carries up to 10 years; and arson by negligence up to five. None carries a mandatory minimum, and the risk to people drives sentencing.
What is arson by negligence?
Arson by negligence under section 436 of the Criminal Code applies to someone who owns or controls property and, through a marked departure from the care a reasonably prudent person would take to prevent or control fires, causes a fire that results in bodily harm or property damage. Failing to follow fire-prevention laws can support an inference of negligence. It is a hybrid offence with a maximum of five years. Ordinary carelessness is not enough.
Who investigates a suspicious fire in Ontario?
Local fire services and police investigate, and the Office of the Fire Marshal of Ontario may investigate fires involving deaths, serious injuries, large losses or suspicious circumstances. Investigators examine burn patterns, the point of origin, electrical systems and any accelerant samples. Their conclusions are opinions that can be tested: the defence obtains the investigation file through disclosure and can retain an independent fire expert. Aaron M. Spektor scrutinizes origin-and-cause evidence closely.
Is it a crime to have gasoline or incendiary materials in Ontario?
Only if you possess them for the purpose of committing arson. Section 436.1 of the Criminal Code makes it an offence to possess incendiary material, an incendiary device or an explosive substance for the purpose of committing an arson offence, with a maximum of five years. Gas cans and lighters are ordinary, lawful items; the Crown must prove the purpose, usually from surrounding circumstances, statements or messages. An innocent explanation is often central to the defence.
Results in arson matters.
Selected, anonymized outcomes. Past results do not guarantee a similar outcome — every matter is assessed on its own facts.
Plain-language guides from Aaron.
Written and legally reviewed by Aaron M. Spektor, with links to the governing legislation.
The Criminal Court Process in Ontario: First Appearance to Pre-Trial & Trial (2026)
Read the guide Your Rights · 6 min readCan Criminal Charges Be Dropped in Ontario? How Charges Get Withdrawn (2026)
Read the guide Your Rights · 6 min readArrested in Ontario? Your Rights and What to Say to Police (2026)
Read the guideSchedule a confidential consultation.
Aaron reviews every inquiry personally and responds within one business day — typically sooner.
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Spektor Law handles 16 distinct categories of criminal and quasi-criminal offences. View the complete list →
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