Prime Minister Jacinda Ardern has confirmed that on Thursday she's going to Christchurch to meet the families of those who lost loved ones when the CTV building collapsed in the February 2011 earthquake.

The families are anxious to talk to her about their disappointment with the police decision not to prosecute the engineers responsible for the building because they think convictions would be unlikely.

The CTV building collapsed after the February 22, 2011 earthquake, killing 115 people including 65 foreign students. It accounted for the bulk of the quake's 185 deaths.

Maan Alkais, who lost his wife in the collapse, says he is looking forward to meeting the prime minister.

"Basically the story did not finish and it's being going on for seven years - we would like to explain why we disagree with the decision by the police not to prosecute," he told NZ Newswire.

"We will ask that this matter should be better resolved in a court where everyone can put forward their argument and a just decision be made."

The victims' families met with Justice Minister Andrew Little in December, who said at the time that he's asked officials to look at introducing a corporate manslaughter law following the police decision not to prosecute.

Mr Alkais said that when the overwhelming majority of (the public) are this angry with the decision there "must be something wrong - when something is wrong it needs to be fixed".

"I personally will never give up fighting for justice," he said.