The families of those killed in the collapse of the CTV building in the February 2011 Canterbury earthquake are calling on the Government to review legislation around corporate manslaughter.

A briefing will be held today with families of Japanese victims of the Canterbury Television building collapse during the devastating earthquake three years ago, Prime Minister John Key says.

Maurice Williamson says he will name and shame property owners if they fail to check whether their buildings have similar flaws to Christchurch's CTV building.

A man who lost his wife when the Canterbury Television building collapsed in the February 2011 earthquake is adding his voice to calls for the unkempt site to be tidied.

A Christchurch couple has returned from a trip to Japan to visit the family of a student they hosted who was killed in the February 2011 earthquake.

Police will decide soon on whether a formal investigation is warranted into the collapse of the Canterbury Television building, which killed 115 people.

The manager of Stadium Southland says there are no concerns with the construction of the new $35 million arena, which is designed by Alan Reay whose firm designed Christchurch's CTV building.

The three main protagonists highlighted in a royal commission report into the CTV disaster have gone to ground today.

The Christchurch firm that designed the ill-fated CTV office block may have built similar buildings that the council does not know about and have since gone unchecked, officials admitted today.

Families and friends of the 115 people killed in the February 2011 collapse of the CTV building are calling for legal action against those they feel are responsible.

Lessons will be learned, future lives saved, but for families of Canterbury Television building earthquake victims there will never be closure.

A series of errors over 20 years led to the catastrophic collapse of the CTV building in the second major Christchurch quake, a Royal Commission has found.

Families of Canterbury Television building collapse victims have welcomed the findings of a royal commission into the building's collapse.

All non-residential buildings and high-rise, multi-unit apartments in NZ will be assessed for earthquake risk and the results made public under new proposals.

A search and rescue expert used Oklahoma City bombing terrorist attack rescue techniques to take control of the CTV Building collapse site, an inquest heard today.

A Fire Service has disagreed strongly with some earlier witnesses at the CTV inquest that there was confusion over leadership on February 22 last year.

Search and rescue units were told to stop scouring the collapsed CTV Building's rubble for survivors within 24 hours of it coming down.

A coroner's inquest today heard from a senior search and rescue expert who described the "chaos" at the disaster site when he arrived two hours after the building's collapse.

The inquest into the CTV deaths has heard of frustrations caused by delays and chaos in the hours after the catastrophe.

The royal commission of inquiry hearings into the Canterbury earthquakes disaster closed today with the chairman giving a final acknowledgment to bereaved families.