National Australian Built Environment Rating System

NABERS is a 0 to 6 star rating system indicating the environmental impact of Australian buildings, tenancies and homes. This is a national initiative managed by the NSW Office of Environment and Heritage (OEH). OEH operates the scheme on behalf of federal, state and territory governments.

Our NABERS and CBD assessor: Harold Grabner

Pangolin Associates assessor is Harold Grabner: NABERS & Commercial Building Disclosure services

Our accredited NABERS assessor, Harald Grabner, can perform a rating of your building’s energy efficiency, water usage, waste management, and the quality of your office’s indoor environment. Almost 70% of office space in Australia has a NABERS Energy rating. Building owners now use the system to track performance with a strong outcome:

  • 9% improvement in energy efficiency
  • Almost 350,000 tonnes of greenhouse gas emissions reduced per year.

NABERS Water has similar results. See more information on the NABERS factsheet.

Types of commercial NABERS assessments ratings

  • Offices and buildings (whole building, base building, tenancy)
  • Hotels
  • Shopping centres
  • Data centres

NABERS explained in 97 seconds

An overview of Australia’s most successful environmental program for buildings.

Two ways to go about a NABERS assessment

  1. An Energy Audit followed by a NABERS assessment.
    Undertake an Energy / Electricity Audit to identify efficiencies and cost savings. A NABERS assessment follows. Implementing the audit’s recommendations helps achieve a higher NABERS rating, and a recognised green credential.
  2. A NABERS assessment followed by an Energy Audit.
    The reverse order also has benefits. In this case the initial NABERS assessment sets a benchmark. The Energy Audit helps target a higher rating.

Read more about our Energy Audits.

Why undertake a NABERS assessment

Save costs

NABERS involves an assessment of performance information, such as utility bills. Our Energy Audit may be an essential step in the process (see below – Two ways to go about an assessment). Identifying and implementing efficiencies results in cost savings for property owners and building tenants, as well as a higher NABERS rating.

For integrity, and a better place to work

Commercial buildings with high NABERS ratings signal quality work environments and a recognised commitment to sustainability.


NABERS is a voluntary initiative, but may be required under certain  schemes, such as the  Federal Governement’s Commercial Building Disclosure (CBD). This is a national scheme providing information for potential buyers or tenants.

NABERS is mandatory under the following conditions:

  • When leasing to the government, the base building must have a 4.5 stars or higher NABERS Energy rating.
  • When leasing, sub leasing or selling commercial office spaces over 2,000 m2.

Now shared with New Zealand

New Zealand has adopted NABERS, called NABERSNZ. Similarly, it is a voluntary rating system that measures the energy performance of New Zealand’s office buildings. The Energy Efficiency and Conservation Authority (EECA) is the licensee of NABERSNZ. It is administered by the New Zealand Green Building Council (NZGBC).

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