Work to stabilise Christchurch's Anglican cathedral should get under way in April.
An agreement to restore the quake-damaged building was reached between the government and the Church Property Trustees in 2018.
Project director Keith Paterson said he hoped people would start seeing work at the site from April onwards.
"Firstly establishing the site as a construction site and it's converting ... a cordoned off part of the city to a construction site.
"Secondly, there's the actual physical work which will go to stabilisation, which involves firstly removing those bits of the building that are dangerous at a high level that may collapse and can easily be removed."
Paterson said he hoped that by then the design for the ancillary buildings would have been finalised.