Crews responded to the blaze in the 15300 block of South Bellflower Boulevard just before 10 a.m. Firefighters said the first and second floors were burning.
A row of cypress trees next to the building also went up in flames, and power lines were also in the path of the fire.
Residents were able to get out safely. The fire has been knocked down.
The cause of the fire has not been determined.
