New NZ Building Code requirements mandate stormwater management for residential driveways over 150m² from July 2026. Contractors face significant changes in design, materials, and costs to maintain compliance.
Major updates to NZS 4229 concrete block standards take effect July 2026, requiring 25% higher compressive strength and tighter seismic reinforcement rules. Block manufacturers estimate 8-12% price increases with significant compliance impacts for contractors and developers.
