Four children have been charged with arson over a fire that destroyed the abandoned Big Brother house on the Gold Coast, purportedly bringing one of the show's former winners to tears.

Six children, aged between nine and 15, allegedly entered the property near Dreamworld at Coomera about 2.15pm on Saturday and were later seen running towards nearby Railway Road.

Police questioned the entire group before releasing two nine-year-olds and charging the other four, aged between 11 and 15, with arson, to be dealt with under the Youth Justice Act.

The charges came after the show's former narrator, Mike Goldman, said the fire had disrupted plans for a celebrity fundraising sleepout and that it was a great loss for Australia to see such a highly rated and long-running television show go up in flames.