The New Zealand Institute of Economic Research is forecasting a gradual pickup in economic growth over the next year or two.
Its latest Quarterly Predictions have economic growth rising gradually to 1.7 per cent this year, from 1.3 per cent last year, and then 2.7 per cent next year.
It remains more bearish than the consensus among forecasters, which is for growth of 2.4 per cent this year, rising to 2.9 per cent next year, despite being more optimistic than the consensus on private consumption.
"Although the Canterbury rebuild will add to economic growth over coming years, we judge that it will be smaller and slower than initially expected," NZIER principal economist Shamubeel Eaqub said.
The provinces are losing people through migration and while there has been an encouraging rebound in migration into Canterbury, Auckland's net migration flow turned negative last month.