Auckland's Hazard Rules Just Changed.
Does your property know it?

The 1% AEP (100-year) flood extent — areas where council hydraulic modelling predicts inundation during a major storm. Based on catchment-level modelling.

Auckland Council's ASCIE 2130 RCP8.5+ dataset — the projected erosion extent under the high-emissions scenario to 2130, covering all three PC120 coastal erosion hazard areas. Exposed west coast beaches, harbour cliffs, and estuarine edges.

Surface stormwater corridors that carry excess runoff when the pipe network reaches capacity. Buildings and structures within the mapped corridor require assessment and may require consent under the AUP.

Topographic depressions identified via LiDAR where water may pond when stormwater drainage is blocked or overwhelmed. Distinct from the floodplain layer.

Two separate layers from Auckland Council's 2025 region-wide study (TR2025/7). Shallow landslide susceptibility covers rainfall-triggered soil slips on steep slopes. Large-scale landslide susceptibility covers deeper, structural failures. Every Auckland property is classified Very Low to Very High. Both layers feed into Plan Change 120 consent requirements.

Low-lying coastal areas projected to flood under a 100-year storm surge combined with 1 metre of sea level rise. Covers harbours, tidal inlets, and low coastal land. This is the layer used on LIMs and in PC120 consent assessments.