Is your DH work looking into accommodation for you or do you have to do that yourselves?
Also, you said the building is damaged that they are working from, do they know where the new one might be yet?
Just wondering as there are MANY suburbs that are basically untouched from the earthquake. Yes, the East side is a real mess but the west side is basically untouched. My DH is working in Hornby at the moment and basically that side is normal. I drove around town today because I'm working with Cat Rescue and needed my rescued kittens micro-chipped and yes, some of the town is a wreck (I didn't go near the CBD as it's still off limits) but others was just normal.
I think definitely look at the outer suburbs or Rangiora, Woodend, etc....
On the plus side, Chch has a real community spirit about it now, it's not all doom and gloom. We are all survivors and there's more of a family feel. I had about 3 people just smile at me at the lights today and it felt good.