Investigators are still trying to determine the cause of the blaze that destroyed the two-story home in Lakewood early Saturday.
Prosecutors tell the Asbury Park Press that the person killed, identified only as a 41-year-old man, was found inside the home. But his cause of death has not yet been determined.
Authorities say the eight displaced residents - four children, ranging in age from 6 to 13, and four adults - were temporarily staying with friends.
Roughly 55 firefighters battled the blaze, which was reported around 12:45 a.m. It was brought under control about 90 minutes later.
Information from: Asbury Park (N.J.) Press