Find Out Your Building’s NBS Rating

Not sure what your building’s NBS rating (or Earthquake prone rating) is? You can now easily find it out online, as The Ministry of Business Innovation and Employment has released a new online tool called the Register of earthquake-prone buildings (EPB Register). You can check it out here.

The NBS is the rating given to a building as a whole to indicate its seismic standard (or the ability to withstand an earthquake). An IEP (Initial Evaluation Procedure) Assessment compares existing building’s % of structural earthquake strength relative to New Building Standard (%NBS).

“Earthquake-prone” buildings are defined as have an NBS less than 33%. Buildings deemed to be an earthquake “risk” have an NBS between 34%-66% and buildings unlikely to be an earthquake risk have an NBS of 67% or more.

This register should prove to be an interesting and insightful tool for all property owners, and it also provides the deadline for completing the seismic work on the building – although any building 67% or greater does not have a requirement to be upgraded.

If you’ve had a report done recently, and it’s higher than the percentage you see on the website (or you believe the rating given is incorrect), you can contact MBIE to let them know so they can update the website.