In September 2010 , the CTV Building had received superficial damage in the 4 September earthquake , but was " given a clean bill of health " by structural engineers , according to the owners . Nevertheless , it collapsed in the February 2011 earthquake , resulting in the greatest single source of loss of life in that earthquake . The building had been built around 1986 ( although reports of the building 's construction date vary : Chip Le Grand of '' The Australian '' said – possibly confusing it with the older CHTV3 building – 1960 ; a 1 March 2011 NZPA report said 1991 or shortly before ; and a 4 March 2011 '' New Zealand Herald '' editorial said 1972 )
4 September earthquake
2010 Canterbury earthquake
Canterbury Television