NCC 2022 Software Transitional Arrangements

The National Construction Code (NCC) 2022 came into effect on 1 May 2023.

Several states and territories have opted to delay adoption of the updated energy efficiency requirements or set an extended transition period.

The Australian Building Codes Board (ABCB) has a useful table referencing adoption dates across states and territories.

NatHERS software guidance

To help manage and streamline requests for assessors during the extended transition to NCC 2022, there will be a blanket, coordinated approach permitting the use of older software versions for NatHERS assessments.

Both the CSIRO and software providers have confirmed they can provide and operate both NatHERS 2019 and 2022 software versions at the same time.

Further information on this arrangement is available in this NatHERS statement.

Listed in the table below are links to each state and territory authority responsible for administering building regulations. Contact your relevant jurisdiction for more information on the required correspondence permitting the use of 2019 software.   

You can also visit the NatHERS website software updates page for the latest information on accreditation of commercial software tools.  

Jurisdiction NCC 2022   State/Territory contacts 
NSW 1 October 2023

See BASIX support materials.

Read about increasing BASIX standards to 7-stars.

Contact the New South Wales Government for more information.

ACT 15 January 2024

Read about the Implementation of NCC 2022 in the ACT.

Contact the Australian Capital Territory Government for more information.

VIC 1 May 2024

Learn about NCC 2022 updates in Victoria in this industry alert

Contact the Victorian Building Authority for more information.

QLD 1 May 2024

Read about NCC 2022 implementation in QLD

No advice provided on software use.

Contact the Queensland Government for more information.

SA

1 October 2024

Voluntary adoption from 1 October 2023 – 30 September 2024

See this statement from the Government of South Australia regarding the use of older software.

Read more on Building Code | PlanSA

Contact the Government of South Australia for more information.

WA

Voluntary adoption from 1 October 2023 – 30 April 2025

Partial adoption from 1 May 2024 – 30 April 2025.

Full adoption from 1 May 2025

Read about NCC 2022 updates and advice in this Newsletter

No advice provided on software use.

Contact the West Australian Government for more information.

NT Voluntary adoption from 1 October 2023

See NT energy efficiency requirements for residential buildings

Contact the Building Advisory Service unit for more information.

TAS Requirements deferred until the adoption of NCC 2025

Read about Energy efficiency for new homes (cbos.tas.gov.au) in Tasmania.

Contact the Tasmanian Government for more information.

Complying with various software

NCC 2019 (from 1 October 2023)

If you are complying with NCC 2019 you must use (unless stated differently in your jurisdiction):

  • accredited software based on Chenath Engine v3.21
  • thermal only NatHERS Certificates.
  • NatHERS Technical Note Version June 2019.
  • heating and cooling load limits of ABCB Standard 2019.1
  • additional requirements for apartments detailed in clause J0.2 of the NCC 2019 Volume One.
  • additional requirements for houses detailed in subclause 3.12.0(a)(i) of the NCC 2019 Volume Two.

NCC 2022 (from 1 October 2023)

If you are complying with NCC 2022 you must use (unless stated differently in your jurisdiction):

  • accredited software based on Chenath Engine v3.22 or v3.23, when they become available. 
  • the new NatHERS Certificate which includes the Whole of Home rating feature (note an alternate compliance pathway can be used for the Whole of Home assessment).
  • NatHERS Technical Note Version September 2022.
  • heating and cooling load limits of ABCB Standard 2022.
  • additional thermal and Whole of Home requirements for apartments detailed in Section J2D2 of NCC 2022 Volume One.
  • additional thermal requirements and Whole of Home requirements for houses detailed in Specification 42 of the NCC 2022 Volume Two.

Heating and cooling limits

Due to updates to heating and cooling load limits in the NCC 2022 compliant version of Chenath, it is recommended that the relevant software and certificate be used for the applicable NCC 2019 or NCC 2022 requirements for jurisdictions that intend to apply the heating and cooling load limits.

Learn more about the new heating and cooling load limits here.