The man's body was discovered by firefighters battling a blaze about 2 a.m. in the 6900 block of North Farmdale Avenue.
Firefighters arrived to find a trailer behind a one-story business engulfed in flames. Crews were able to extinguish the fire before it spread to the business.
The man's name was not released. Authorities said the man, who is 20 to 30 years old, might be an employee of the business. A positive identification and exact cause of death will be determined by the Los Angeles County Department of Coroner.
The cause of the fire was under investigation.