Los Angeles police responded to an undisclosed medical emergency at a home in Encino at around 1:50 p.m., which is when they discovered the body, as the Associated Press reported.
Though no cause of death has been revealed, police do not believe there was foul play involved.
Bobby Jr.'s mother is Kim Ward, who Brown dated for 11 years before he married Whitney Houston.
Brown lost his daughter, Bobby Jr.'s half-sister Bobbi Kristina, in July 2015, after she was found unconscious in a bathtub and was then in a coma for months. The autopsy revealed the cause of death was lobar pneumonia due to "immersion of face in water complicating mixed drug intoxication." Bobbi Kristina died three years after the February 2012 death of her mom, Whitney Houston.