Australia's most populous state said Sunday it would embark on the "biggest overhaul of building laws" in its history, months after residents were evacuated from a recently completed Sydney high-rise apartment that made "cracking noises". There have been question marks hanging over New South Wales' building and construction industry after some 300 people in the 38-storey Opal Tower in the Sydney Olympic Park were evacuated on Christmas Eve after the cracking reports.

Some residents have yet to return to their homes, while an initial investigation found there were a number of "design and construction issues" that could have led to the damage. The building moved "one to two millimetres" during the incident and authorities had said they found a crack on the 10th floor.

The new regulations will require that designers, engineers and architects are registered, qualified, and held responsible for their work, in contrast to the earlier building code which only held builders accountable for any lapses. A building commissioner will be appointed to audit their work, and changes to property plans in the construction stage will not be allowed unless further approval is given.

The new rules were drawn from recommendations from an independent report commissioned last year before the cracking crisis, but are seen as an effort to restore confidence in the sector after the public outcry.-Copyright Agence France-Presse, 2019