The fire broke out at about 5:45 p.m. Monday at the two-story home in the 1100 block of West Oak Grove Drive, and was extinguished in about two hours, according to Brian Humphrey of the Los Angeles Fire Department. About 100 firefighters responded to the scene to battle the blaze, officials say.
Neighbors and relatives told firefighters that an older man sometimes lived at the home and he could not be located, Humphrey said.
"At approximately 9:30 a.m. (Tuesday) the body of a deceased, adult male victim was located within the structure which sustained significant damage in last night's fire,'' the LAFD's Margaret Stewart said Tuesday morning.
The victim's age and identity have not yet been released.
"This remains an ongoing investigation by LAFD Arson Section and LAPD,'' Stewart said. "The L.A. County Coroner/Medical Examiner's Office will determine cause of death and confirm identification.''
Firefighters also extinguished a vegetation fire at the site. The cause of the fire was under investigation.
City News Service contributed to this report.