The property firm development will add a new 7458sq m facility at the Highbrook site.
Major developments coming off Goodman's drawing board.
Distributable earnings after tax rose to $97.9m in the 12 months ended March 31.
Goodman and its Singaporean joint venture partner buy a big office building at Auckland's Wynyard Quarter
The additional space will add $2.2 million to annual rent and a further 11,140 square metres of lettable area.
Goodman and GIC expect the Viaduct portfolio to grow to $500 million.
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