Two earthquakes last month caused significant additional damage to the Christ Church Cathedral.
The bigger of the quakes was a magnitude 5.7.
The Anglican Diocese of Christchurch says the earthquakes have caused additional damage to the cathedral, including to the west wall, south aisle walls and masonry piers.
And an engineering report says cracking to the north and south walls of the apse has noticeably increased, and more rubble has fallen.
The diocese says the subsequent damage is not expected to affect ongoing discussions with the government regarding reinstating the cathedral.
The 5.7 Valentine's Day quake caused coastal cliffs to collapse and triggered liquefaction in some eastern suburbs.
Residents were also jolted awake on 29 February when a 4.3 quake hit at 3.32am.
The Earthquake Commission (EQC) received more than 5000 claims in connection with the two earthquakes.