Six post offices spread throughout Christchurch are going to close.
The Kaiapoi, Palms, Barrington, Hornby, Riccarton and Upper Riccarton branches will close their doors.
Postal services would instead be offered by existing businesses at those locations.
New Zealand Post said it was now looking for those interested in taking on this role.
It said the model was already in operation at over 800 locations around the country and had the benefit of increasing foot traffic for existing businesses.
Until new providers for the service were found, existing post offices would continue operating.
Kiwibank, which had traditionally operated out of post offices, would no longer offer banking from Barrington or Upper Riccarton but would open stand alone banks at the Palms, Hornby, Riccarton and Kaiapoi.