A 52-year-old charged with murder and kidnapping has previously appeared in the Christchurch District Court - today will be his first appearance in the High Court.
Police were focusing last week on a farm in Greenpark, which is close to previous search location Lake Ellesmere.
There’s no planned search activity this week but work is continuing to prepare search sites.
It’s one of the worst such disasters in a city where poverty, household fires and homelessness are widespread.
Authorities are still unable to provide a clear picture of who lived there but among the dead are 12 children.
President Cyril Ramaphosa says he hopes an ongoing investigation into the causes of the fire will help prevent a similar tragedy from occurring in the future.