Flooding in Christchurch’s eastern suburbs.CHRIS SKELTON / The Press Marc Greenhill is chief news director at The Post OPINION: As a Cantabrian who had to navigate the pitfalls of post-disaster home ownership in the aftermath of the 2011 earthquake in Christchurch, I’ve become quite attuned to risk. I’d owned my house in the eastern suburbs for about 12 months when the big one struck on February 22, but was fortunate to escape major damage.