That non-binding vote registered 98 percent support for independence, with consultations between the two governments expected to run for a year from this September.
The Commission presented its final report to PNG Prime Minister James Marape in Port Moresby on Thursday.
The BRC chair, former Irish prime minister Bertie Ahern said "the peaceful vote signalled the end of just the latest step in the long-standing Bougainville-Papua New Guinea peace procoss."
