Christchurch new build cost breakdown 2026 in one sentence: once you add land, build, council charges, utilities, move-in extras and finance, most standalone family new builds in Christchurch or Selwyn land well above the headline build contract people first compare online, which is consistent with REINZ's March 2026 market update and Stats NZ's March 2026 selected-class housing data (as of 2026).That is...