How the rating works

A NABERSNZ Certified Rating gives a star rating, from 0 to 6, that clearly shows your building’s energy performance compared to others.

It is valid for 1 year, so each year you can get a new assessment to track your progress. This encourages continuous monitoring and means that when your energy efficiency improves, you’ll be able to prove it. 

NABERSNZ star ratings:

0 stars = very poor performance
1 star = poor performance
2 stars = below average performance
3 stars = good performance
4 stars = excellent performance
5 stars = market leading performance
6 stars = aspirational performance