He also spoke about other complexities facing planners in New Zealand, such as the need to balance the environment, the economy and the needs of people, something he balances as both Minister for the Environment and Economic Development.
"One of my responsibilities, I see, is to integrate environmental, social, and economic outcomes."
An example he gave was the housing crisis. While it is vital people in New Zealand have a home to go to, currently a lot of urban development is extending onto prime agricultural and horticultural land.
"I'm troubled by how much of our urban growth is occurring on our irreplaceable, highly productive soils."
He said the Environment Aotearoa: Our Land 2018 report showed around 29 per cent of land used for vegetable production was lost to urban development between 1996 and 2012.
However, he felt New Zealand was primly positioned to solve some of these complex issues.
"If New Zealand can't, then the world won't."