An aerial view of new housing in Kaiapoi. A report assessing the region’s housing potential argues that with Kaiapoi largely built out, the Waimakariri district is depending on Rangiora to drive growth, writes Mike Yardley.KAI SCHWOERER / THE PRESS Mike Yardley is a Christchurch-based writer and commentator on current affairs, and a regular opinion contributor. OPINION: Why is Selwyn continuing to dramatically outstrip Waimakariri in housing growth?