It will have 195 rooms, a ballroom, entertainment facilities, health centre and day spa and will have a total floor area of 29,000sq m.
Panuku Development Auckland's interim chief, John Dalzell, said having a quality hotel in the city would create a new standard of "premium accommodation" in the region.
"This is a landmark site for Wynyard Quarter and is deserving of a building of the standard the developer and its design team have come up with," he said.
"It's great to see it pass this latest milestone and we look forward to the positive impact the hotel will have on the waterfront and the region."
Prime Minister and Minister for Tourism John Key yesterday praised the new hotel, saying that it would provide a huge boost for local tourism.
Auckland Mayor Len Brown, who is in China, said that such a hotel would help not only to attract the very rich to Auckland, but would also create more jobs in the city's business district.
"This hotel means more jobs and a strong step into the lucrative but largely untapped high-net-worth individuals tourism sector - which will be a huge benefit to Auckland's economy and future."
The hotel will open in 2017.