7 Most Common Causes of House Fires

7 Most Common Causes of House Fires


Cooking is the most common cause of house fires
The chief causes of house fires are clear—and so are the ways to avoid them. Here’s what you need to know about preventing 10 common hazards.

Cooking Equipment

When a pot or pan overheats or splatters greases, it can take seconds to cause a fire. Stay in the kitchen when cooking, especially if using oil or high temperatures; most kitchen fires occur because people get distracted and leave their cooking unattended. Keep combustibles (e.g. oven mitts, dish towels, paper towels) away from heat sources.

Feet on radiator

Heating Equipment

Have your furnace inspected annually by a qualified technician, and your chimney cleaned and inspected annually. Keep portable heaters at least one metre away from anything that can burn (including curtains, furniture, and you), and don’t use your heaters to dry shoes or clothes. Install a carbon monoxide alarm to alert you to deadly carbon monoxide gas.

Woman smoking a cigarette

Careless Smoking

Make the bedroom off-limits to smoking, and supervise smokers who may become drowsy (i.e. on medication, drinking) or forget to extinguish their cigarette. Use large, deep ashtrays; never place an ashtray on or near anything that will burn; and check furniture for fallen cigarettes/embers (a butt can smoulder for hours before causing furniture to burst into flames).

Toaster with bread slices

Electrical Equipment

Ensure the following:

  • Your electrical appliances don’t have loose or frayed cords/plugs
  • Your outlets aren’t overloaded with plugs
  • You’re not running electrical wires under rugs or heavy furniture
  • You’re not overusing an extension cord. Be careful about do-it-yourself electrical projects; many home fires are caused by improper installation, so use a licensed electrician.
Candles in modern living room


Keep candles in a sturdy holder on a level surface, away from combustible materials and out of the reach of children or pets. Blow them out before leaving the room.

A box of matches

Children Playing with Fire

Children cause fires out of curiosity (what happens when something burns) or mischief (they’re angry, upset or destructive, and fire is a major taboo to break). Kids may be involved in fire play if you find matches or lighters in their room/possession, smell sulphur in their room, and/or find toys or other personal effects that appear melted/singed.

Electrical box in basement

Inadequate Wiring

Older homes and apartments can have inadequate wiring—a fire and an electrical hazard. Some warning signs:

  • You have to disconnect one appliance to plug in another
  • You have to use extension cords or “octopus” outlets extensively
  • Fuses blow or circuit breakers trip frequently
  • Lights dim when you use another appliance