A major overnight fire destroyed three vacant buildings on Simpson Street in Thunder Bay, Ontario, on April 15, 2026. The blaze, which began shortly after 3 a.m., prompted a large response from Thunder Bay Fire Rescue.
Thirty-four firefighters and one fire prevention officer arrived at the scene with six pumpers, one aerial ladder, and one command vehicle. Due to the size and complexity of the fire, the department utilized a defensive strategy, meaning crews did not enter the structures to ensure the safety of emergency responders. No injuries were reported during the incident.
The fire destroyed three derelict buildings. While the buildings were vacant and lacked active utility services, investigators determined that human activity caused the blaze. According to fire officials, occupants had been staying inside the structures despite their condition.
This incident highlights ongoing safety concerns regarding empty properties in the city. The City of Thunder Bay has previously identified Simpson Street as a priority area for revitalization, with 59 buildings flagged for potential demolition or repurposing. The city recently secured over $2 million in federal funding through the Housing Accelerator Fund to address these run-down sites.
Local representative Councillor Brian Hamilton noted that this event could impact the timing of planned developments in the neighbourhood. The area continues to be a focus for city-led infrastructure and safety improvements.
