Grand Designs New Zealand

Architect Chris Moller meets Southland farmer Lachlan McDonald, who's building a modernist concrete home with a controversial roof in one of the most remote parts of NZ.

Young builder Zac wants to save money by building his own home. The problem is: he's promised his mum he'll build hers at the same time, and both on top of a sand dune. Who'd be mad enough to do that?

Sustainability experts Karl and Amelie have a dream of a house that is heated solely from the sun. But on a steep, exposed, windy Wellington hillside site, they're challenged right from the start.