Six people, including two children, are displaced.
The fire broke out around 11:30a.m.
Firefighters were able to get it under control.
There are no reports of injuries.
Officials are investigating an unconfirmed report about an individual possibly fleeing the scene, according to Lt. Jonathan Baxter in a Twitter video.
UPDATE: MEDIA STAGING IS 80 EUREKA CROSS OF MARKET pic.twitter.com/jETn8JI2gK— SAN FRANCISCO FIRE DEPARTMENT MEDIA (@SFFDPIO) March 5, 2021
The cause of the fire is under investigation.