The building is on University Boulevard near the Arlington Expressway Service Road. JFRD said the building was abandoned.
No injuries were reported in the fire. As of about 7 p.m., JFRD said the fire was under control.
A woman who was across the street when the fire broke out.
"Everyone was here. Fire Rescue, EMT, police, everybody was in there and that was all in a matter of minutes, maybe 10 to 15 minutes," she said. "They came pretty quickly."
Some people pulled over to get a better look at the fire.
"It was fully engulfed," she said. "I'm proud of JFRD. My son is a firefighter and I always pray for them."
The cause of the fire is under investigation. Shortly after 11 p.m., firefighters were still at the scene checking for hot spots.oud of JFRD. My son is a firefighter and I always pray for them."