A fierce overnight blaze tore through a vacant two-story office building in Serra Mesa just after midnight today, sending flames through the roof and triggering a heavy multi-alarm response. Firefighters rushed to contain the fire, working to keep it from jumping to nearby buildings in the Mission Village business area along the 9100 block of Gramercy Drive. No injuries were reported.
Fire crews escalate to third alarm
San Diego Fire-Rescue officials told Fox5 San Diego that crews arrived on scene roughly six minutes after the first 911 call. Given the size and intensity of the flames, the response was quickly bumped to a second alarm. About 30 minutes into the incident, additional engines and personnel were requested and the blaze was elevated to a third alarm, according to the station. Firefighters reported flames shooting through the roof when they pulled up and concentrated on shielding neighboring structures while knocking down the main body of the fire.
Site history and neighborhood context
The burned structure is part of the Mission Village office cluster off Gramercy Drive, a pocket long flagged in local discussions for cleanup and potential redevelopment. Materials from the Serra Mesa Community Council reference prior permits and site work along Gramercy, highlighting the mix of aging office buildings and commercial parcels that define the block. Residents near the fire scene reported heavy fire apparatus presence and traffic delays as crews worked through the night.
Investigation and safety steps
Officials told Fox5 San Diego that the cause of the blaze remains under investigation. Units stayed on scene into the morning to chase lingering hotspots and secure the building. The City of San Diego Fire-Rescue also provides guidance on how to secure vacant properties and maintain defensible space to cut down on fire risk. Investigators are asking anyone with information to contact authorities as the probe continues.
Neighbors and next steps
Neighbors described a massive response, road closures, and a late-night spectacle in the Mission Village area as firefighters battled to bring the blaze under control. The two-story office building has been vacant for some time, and residents said they are eager to learn whether the fire was accidental or deliberately set. Officials said more details will be released as investigators sort through debris and move the case forward.
