NZ premier confident of Christchurch hosting RWC

New Zealand Prime Minister John Key remains optimistic that the earthquake-shattered city of Christchurch can host World Cup rugby matches later this year.

"My strong preference is to hold the Cup in Christchurch if we can because I think it sends a very strong international message that Christchurch is going through a rebuilding phase, and equally, if we don't, sadly, the message is it's not," said Key.

Several buildings in the central business district in New Zealand's second-largest city have been levelled by the 6.3-magnitude quake that struck on 22 February, killing at least 155 people and badly effecting infrastructure.

The stadium at Lancaster Park, which is scheduled to host seven World Cup matches including two quarter-finals, has also been damaged and the Canterbury Crusaders have been forced to shift their first two home Super rugby games away.

It is still unknown if they will play any games in the city this season.

Questions have also arisen as to whether the city will be able to host the matches and thousands of international and domestic fans expected for the 9 September to 23 October tournament.

Key, who grew up in Christchurch, said the condition of the stadium and ensuring there was enough accommodation were the main concerns for the World Cup.

"There's a series of different boxes that will need to be ticked before we can say 'yes' or 'no'," Key added. "That work (on the stadium] is happening. If it doesn't pass that standard then obviously the Cup has to be moved, if it does then we can work through the other logistical issues.

"We've already made inquiries about cruise ships (for accommodation] and that's entirely possible, and that's not a bad place to stay.

"Even if it costs a bit more, we might be prepared to accommodate that cost if it means holding the Cup in Christchurch."