Outstanding NABERSNZ ratings for your buildings

ESP provides the experience and tools to efficiently achieve the NABERSNZ ratings required by high quality tenants and government agencies.
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Benefits of NABERSNZ

Building ratings are increasingly used as the tool for investors and tenants to benchmark building quality.

New Zealand is rapidly following the success of NABERS in Australia where ratings are required for all offices larger than 1,000 sqm. NABERSNZ ratings are now mandatory for many new government tenancies, and government is being asked to extend requirements in line with Australia.   

Attract quality tenants

NABERSNZ ratings above 4 stars are now required by many government tenants. Rated buildings achieve higher occupancy, tenant satisfaction and better results for property owners, managers and tenants.

Be more sustainable

Deliver on your, and your tenants sustainability goals by reducing scope 2 emissions through improved energy efficiency. Efficiently deliver GRESB and automated carbon emission reporting to be more productive. 

Improve asset life

Monitor your plant to optimise asset life and extend repair and maintenance budgets. Energy efficient plant only operates when needed, reducing utilisation inefficiencies and extending replacement cycles.

Be your most productive

ESP’s highly experienced consultants and market leading technology help you deliver more productively to your clients. Plan, manage and report results transparently to all stakeholders across your entire portfolio. 

Know your NABERSNZ

Watch our webinar to understand more

Experience matters

Industry leading software and services to simplify the NABERSNZ process and deliver great rating results.

To achieve efficient and cost effective results, a range of services and technology are required to measure, monitor and achieve and sustain quality NABERSNZ ratings. ESP’s integrated service offering and extensive experience allows us to deliver more effective energy and environmental results, whether you are looking for a whole building, base build or tenant rating. 

“We believe adopting environmentally sustainable practices like NABERSNZ is the right thing to do and we see it as a win-win outcome on every level.”
Ryan Carter

Portfolio Manager, 151 Property

Leading Technology

ESP provides New Zealands leading technology to efficiently collect the data required to achieve and improve NABERSNZ ratings.

Hub is ESP’s energy efficiency software. Hub can be rapidly connected to a range of meters to immediately provide your utilities consumption throughout the month, including electricity, gas, solar and water. Deliver ongoing improvements with advanced features to set targets, plan projects, report to stakeholders and analyse performance issues. 

ESP Hub provides the information and reporting for all stakeholders, to efficiently deliver and sustain NABERSNZ results.

Learn more about ESP Hub

Human Intelligence

Achieve quick wins and sustain long term results with support from ESP’s experienced engineers. Our managed services guarantee access to the skills and experience to compliment your internal team. When you need additional consulting capability, we have the data and knowledge to provide pragmatic, accurate advice and deliver results fast.

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Frequently Asked Questions

Can I get a NABERSNZ rating for a building with a public café?

A building with a cafe can be NABERSNZ rated. The assessor will confirm whether the cafe is used for only tenant purposes, our whether it is available to the public. So it can be determined whether the area and energy consumption should be included or excluded.

Is NABERSNZ Basebuild mainly design related and Tenancy is performance related?

No, All three NABERSNZ rating types (base building, tenancy and whole building) rate the ongoing energy efficient performance of the building. In reality, basebuild rating results can be capped in some instances due to particular design limitations. However, this must be accounted for in any renewal or refresh works.

Is it correct that New Zealand Government tenants, when procuring a new lease, the building must now have a 4 Star NABERSNZ rating?

Yes, that is correct. New Government leases must be 4 star or greater already. These increase over time. More information can be found here

We are currently increasing our outside air volumes, in response to covid concerns. This will incease our energy use. Are NZGBC thinking about how this can impact on ratings?

It is acknowledged that increased outside air volumes will increase energy use. However these aqre real energy consumption and carbon emissions. We hope it is a short term effect, but NZGBC will raise the issue with the wider NABERS network.

How is NABERSNZ accomodating low occupancy at moment due to Covid-19. Wont this be reflected as artificially good ratings?

A Covid ruling document has been published which details how assessors can deal with this exact issue. Two of the methods provided are to assume a low occupancy of 20m2 per person, or use occupancy data from a previous rating. There is also COVID advice available on the NZGBC website for specific COVID related circumstances. Note that this will be updated in due course.

The Built rating for the Green Star lasts for the life of the building. Greenstar Performance provides certification for a buildings operations.

This is clarifying an error in the presentation which indicated Greenstar As Built only last for a period of time.

Does NABERSNZ provide water ratings, and if not is this something which will be introduced in the near future.

NABERS in Australia provides ratings including water. NABERSNZ currently is energy efficiency only, and there are no plans currently to introduce water ratings. The Green Star Performance rating tool captures water use.

How should gas and water consumption be converted to KWH/sqm for Greenstar rating purposes?

How should gas and water consumption be converted to KWH/sqm for Greenstar rating purposes?

For NABERSNZ how do you meter a typical older building with split HVAC - e.g. ChW to FCUs off central plant and heating by FCU electric elements wired off the tenants' boards

Typically we will submeter the relevant HVAC/basebuild loads on each floor to account for these loads in the calculation. This metering is common in many buildings we monitor.