San Francisco Fire Contains Attic Blaze at Outer Sunset Construction Site

Flames broke out in the roof of a building under construction on the 1700 block of 31st Avenue in the Outer Sunset Wednesday night, forcing five people from their home before San Francisco firefighters brought the one-alarm blaze under control by 7:05 p.m.

The fire was first reported on social media around 6:30 p.m., and crews from the San Francisco Fire Department kept it contained to the building’s roof. No injuries were reported.

The incident adds a fresh safety question for a neighborhood that sits between Ocean Beach and Golden Gate Park and mixes homes, local shops, cafes and restaurants with active building sites. In the Outer Sunset, where construction work can sit directly beside occupied homes, even a fire that stays on the roof can quickly become a neighborhood event.

The cause remains under investigation. Fire officials have said their public incident records can later include the call number, incident number, responding units, call type, actions taken and property loss, details that often help show how a fire started and how quickly it was stopped.

That review is likely to draw in the city’s Department of Building Inspection, the agency that approves construction plans, issues permits and checks that buildings comply with code. When a fire breaks out at a site under construction, the permit record and inspection history can become central to understanding whether the work was properly allowed, monitored and secured.

Supervisor Wong shared updates on the fire as it unfolded. Fire officials identified the area as Battalion 8, which covers the Outer Sunset, a part of San Francisco where residents live close to the Pacific edge of the city and depend on quick response when a construction site turns hazardous.

By nightfall, the immediate danger had passed, but the roof fire left five people displaced and renewed attention on how the city tracks safety at active construction sites. The next answers will come from the investigation, including what sparked the blaze and whether the property’s construction work met the city’s permit and inspection requirements.