The aquatic centre shared the the 2014 award with a tiny family bach at Otago's Taieri River mouth built in only eight weeks.
The awards, which have been running since 1975, were judged this year by Timber Design Society president David Scheibmair, leading architect David Sheppard and MBIE chief architect Duncan Joiner.
NZ Wood director Brian Stanley told the awards function in Wellington that the world is seeing amazing developments in timber-based construction.
Mr Stanley said the Wood Council of New Zealand is asking the government to adopt a "wood-first" policy. He describes this as an enlightened approach to encouraging wood use in public buildings already in place in countries as diverse as Japan, France and Canada.