The fire broke out at a home in the 900 block of East 63rd Avenue at about 5 p.m. PT on June 15.
Edward Stobie Billy, 20, was found dead in the basement. The cause of death has not been released.
Police say the fire was deliberately set and Billy's death is now confirmed to be a homicide.
In a strange coincidence, the home belonged to an elderly woman who was killed earlier in the day when she fell under a bus.
Police haven’t made any arrests in connection with Billy’s death.
Anyone with information is asked to contact the Vancouver Police Major Crime Section at 604-717-2500 or Crime Stoppers at 1-800-222-8477.