33 Customhouse Quay, which reaches four storeys high, has over 300 workers and boasts floor area in excess of 5,000 m2, is the first building to be awarded the top 6 star rating under NABERSNZ. 33 Customhouse Quay was also the first in New Zealand to be awarded a Green Star rating, receiving 5 Stars in October 2007 showing that green designed buildings are also green in operation.