Fire Inspector how-to
How to Determine a Fire’s Area of Origin
Finding where a fire started is the first step in finding its cause.
Quick answer
Finding where a fire started is the first step in finding its cause. In short: make; observe; document, then complete the remaining steps below.
Step by step
Make sure the scene is safe to enter.
Observe the exterior and work from least to most damaged areas.
Document burn patterns with photos and diagrams.
Look for V-patterns, char depth and protected areas.
Interview witnesses and first responders.
Narrow the area of origin before examining possible ignition sources.
Safety reminders for fire inspectors
- Wear PPE and respiratory protection at fire scenes
- Assess structural stability before entering burned buildings
- Watch for electrical and chemical hazards
- Follow traffic safety on scenes
Key terms
Fire code · Means of egress · Occupancy classification · Occupant load · Sprinkler system · Fire alarm system: see the full fire inspector glossary.