The Los Angeles fire department (LAFD) said in a statement it took 59 firefighters to extinguish the fire.
As of Saturday, the Los Angeles police department (LAPD) said it was investigating the incident but had not determined its cause.
A CBS Los Angeles reporter said in a tweet the resident of the house, which was engulfed in fire, is “a mess”.
Actor Anne Heche was “stable” in hospital amid a wave of support from fans and fellow stars following an accident in which she drove her car into a Los Angeles home, causing severe burn injuries to herself as well as damaging the house which has become “uninhabitable”.