In the city of Adelaide, large public protests erupted in the 1980s regarding the 1983 campaign to save the Aurora Hotel in Hindmarsh Square, which had been recommended for listing on the city heritage register but refused because the site was to be redeveloped. The protest led to the emergence of Aurora Heritage Action, Inc. (AHA), which became the most vocal heritage lobby group in Adelaide during the decade, often working in cooperation with residents' associations and later the National Trust. While governments were urged to protect the traditional character of Adelaide, capital became more widely available for development. The large increase in property development from 1987 increased opposition to further demolition of Adelaide's historic buildings. Local councils and lobbyists alike aimed to expand the horizon of heritage to protect historic precincts across the city, even if buildings within those precincts did not warrant heritage listing. The Bannon government slowly responded to public demand and introduced historic (conservation) zones through a revision to the Planning Act (1982) in 1989. Not regulated by the Planning Act, the City of Adelaide endeavoured to create on a similar scheme, which became known as the townscape initiative, facilitating one of the most destructive political debates in the council's history.