Investigators say the blast followed reports of gas odors and a loss of pressure on a nearby line.
CENTREVILLE, Va. — Dozens of families in a Centreville neighborhood remained out of their homes Thursday, four days after a house explosion and fire leveled a residence and triggered a wide evacuation as crews worked to find and stop an ongoing natural gas leak.
The blast and fire shook the Belle Pond Farm area late Sunday and prompted a rolling safety response that has stretched into the workweek. Fire officials and utility crews have kept gas service shut off in the immediate area while investigators test for leaks and watch readings on nearby lines. The National Transportation Safety Board has joined the investigation, and county officials have warned the evacuation area could change as crews narrow down where gas is escaping.
Residents said the first signs of trouble came before the explosion, when some neighbors noticed the smell of gas. Then, just before 10 p.m. Sunday, a home on the 14300 block of Quail Pond Court exploded, sending flames and debris into the night and drawing more than 20 emergency calls, officials said. Fairfax County fire crews arrived to find heavy fire and a collapsed structure, and they pulled back nearby residents as they searched for hazards. Two people, including an elderly man who lived in the home and a neighbor, were treated at a hospital and later released, Fairfax County Fire and Rescue officials said.
By early Monday, the county had ordered a large evacuation around the damaged home while crews tried to determine whether gas was still moving through the area. The initial push sent more than 50 families away from the block, with some residents leaving quickly with pets, medicine and a few bags. Fire officials later said a wider group of homes also had their gas shut off as a precaution, even if they were outside the evacuation line. Investigators said the goal was to remove ignition risks while they searched for the source of the leak and checked multiple lines that run near the neighborhood.
As the days passed, the footprint of the disruption shifted but did not end. Officials said some families have been allowed back in after checks, but more than 30 households were still waiting for an all-clear Thursday. In some cases, residents were permitted to return briefly with a fire department escort to pick up needed belongings, while long-term reentry remained blocked. Utility crews and fire investigators continued to test air and soil, monitor pressure and isolate sections of pipe. What has not changed is the central unknown: officials have not publicly identified the exact point where gas is leaking or the precise sequence that led to ignition inside or near the home.
Investigators have pointed to a nearby natural gas distribution line as a focus as they work through possibilities. In briefings and interviews, officials described pressure loss on a segment of pipe and said crews were working to pinpoint where gas was escaping and how far it had traveled. The response has involved local fire investigators, hazardous materials teams, utility workers and federal investigators. The NTSB’s role, officials said, is to help document evidence and support the technical work needed to determine what happened and how to prevent similar incidents.
Residents in Belle Pond Farm said the waiting has been the hardest part. Some neighbors who were cleared to return described coming back to cold homes, empty refrigerators and lingering questions about what is safe. Others have stayed with family or in hotels, unsure whether they will be back by the weekend. “We just want to know when we can go home and know it’s OK,” one longtime resident told local reporters as crews worked behind police tape. County officials have urged patience, saying the process is slow because crews are treating every reading as important.
The fire and explosion also raised concerns about the network of gas infrastructure in and around the area. Neighbors said they were aware of pipelines in the region but had not expected an emergency that would shut down a whole section of the neighborhood. Officials have said the evacuation radius could shrink as crews confirm areas are clear, but it could also expand if testing suggests gas is moving in a different direction than expected. In one update, officials warned the affected zone could grow to include about 100 additional homes if conditions change, with residents given a short window to leave if that happens.
For now, the neighborhood has moved into a routine of checkpoints, escorts and ongoing measurements. Police cruisers and barrier tape have remained near the hardest-hit block, and utility trucks have cycled in and out as crews work on valves, meters and access points. Some streets have been quiet during the day, with only residents returning to retrieve essentials, while nearby blocks have seen normal traffic and school runs. The contrast has left some families feeling stuck between normal life and an emergency that will not fully lift until the leak is found and fixed.
Officials said they will continue updates as testing continues and emphasized that the fire scene remains an active investigation site. A final cause determination is expected to take time and will depend on what investigators find in the debris and in the surrounding gas system. Until then, officials said, they plan to keep the evacuation in place for the remaining homes and keep gas service shut off in the immediate area as a safety measure.
By Thursday morning, county officials said more homes had been cleared to return, but dozens of families were still displaced and the leak source had not been publicly confirmed. The next milestone is expected with additional testing results and another briefing as crews work toward restoring service and lifting the last evacuation orders.
Author note: Last updated February 19, 2026.