3rd Alarm Fire – Chestnut Street

At 4:15 am on 10/15/2025, San Francisco Fire Department units responded to the 2500 block of Chestnut Street for a fire in the building.

Upon arrival first in companies noted smoke and flames showing from a three-story residential building.

A working fire was called upon initial firefighting activity. Due to heavy fire conditions a second alarm was called for additional resources.

During that time, a mayday was called for two firefighters who sustained injuries from a fall from the third to the second story in the interior of the building. A third alarm was called at that point, and the Rapid Intervention team was activated.

Units on scene continued an aggressive firefighting attack and contained the fire to the building of origin, and the two buildings adjacent to the fire building.

Four people were displaced in one of the adjacent buildings and were assisted by the Red Cross on scene.

An additional injury occurred during salvage and overhaul operations, where a firefighter had minor injuries and was transported to the hospital. A total of three firefighters were injured at this incident.

Two of the firefighters who sustained minor injuries have been released from the hospital. One firefighter remains hospitalized for further treatment.

Fire investigators responded to the scene and are investigating the cause and origin.