The Government has announced proposed changes to the Earthquake-Prone Building (EPB) system aiming at making the system more proportionate and risk-based and targeting higher seismic risk areas and buildings that pose greater safety risks.
The proposed changes include:
- Removal of NBS system – The New Building Standard (NBS) system currently used to assess the seismic performance of a building will be removed. The NBS ratings will not be used to identify EPB’s.
- Low-risk areas removed and reclassification of Coastal Otago – Auckland, Northland and the Chatham Islands will be removed from the EPB system due to their low seismic risks. Coastal Otago will be reclassified as a medium seismic hazard area and will continue to fall within the EPB system.
- Targeted building types – Buildings of three or more storeys with heavy construction (e.g. concrete) and unreinforced masonry buildings that are not in Auckland, Northland and the Chatham Islands will remain under the EPB system.
- Tiered risk mitigation requirements – The new risk mitigation requirements include:
- a requirement to remain on the national EPB register
- façade securing
- targeted retrofit
- full retrofit,
and these requirements will apply according to the location of the building and the building type.
- No automatic fire and accessibility upgrades – The requirement for concurrent fire and accessibility upgrades will be removed so that seismic work will not automatically trigger these upgrades.
- Deadline extension – Building owners will be able to apply for seismic work deadline extensions subject to conditions. Councils can grant up to 15-year extension to the seismic work deadline.
- Priority building status – Priority building status will no longer automatically apply to government agencies (such as hospitals, fire stations or schools). Only unreinforced masonry that risks pedestrians or vehicles and buildings that could block emergency routes will qualify as priority buildings.
It is expected by the Government that the proposed changes will remove around 55% of EPBs (approximately 2,900 buildings) from the EPB system and save building owners around $8.2 billion.
The proposed changes will be implemented through the Building (Earthquake-prone Building System Reform) Amendment Bill, which is expected to be passed into law in 2026.
If you would like to discuss any of these proposed changes or how they may affect your building(s), feel free to get in touch with our property team.


