The Los Angeles Fire Department responded to the fire in the 7700 block of West Hollywood Boulevard near North Ogden Drive at around 5:20 p.m.
Brian Humphrey of the LAFD said the blaze was initially reported as two vehicles burning in a carport, but the flames made their way into the attic of the structure.
Fire crews pulled a female patient from the second floor of the burning structure, Humphrey said. According to crews on the scene, the patient was taken to Cedars-Sinai Medical Center with minor burn injuries and smoke inhalation. One person was hurt in the fire.
The fire quickly burned through the roof of the structure, with a portion of the roof collapsing.
According to the LAFD, the apartment complex has 32 units in an 18,900- square-foot structure