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NCC 2019 Amendment 1 proposed changes update


Decisions have been made on the inclusion of the definition of building complexity and the process for documenting Performance Solutions.

The preview of the National Construction Code (NCC) 2019 Amendment 1 noted that two proposed changes were still to be confirmed. These were:

  • a new defined term, building complexity, that may be used in the future to identify buildings for which additional oversight is appropriate; and
  • a new provision to require that a process be followed to improve the documentation for Performance Solutions.

At recent meetings of the Building Ministers’ Forum (BMF) and the Australian Building Codes Board (ABCB), the status of the proposed changes has been determined. The outcomes are outlined below.


Definition for building complexity

The defined term ‘building complexity’ will not be included in NCC 2019 Amendment 1. 

The BMF has determined that the ABCB publish the definition for building complexity on its website. A consultation period will be open for a six-months, during which time further work will be undertaken by the ABCB on the related regulatory interventions, in consultation with states, territories and industry stakeholders.

A copy of the Exposure Draft can be downloaded and any comments provided via the ABCB website.


Process for the documentation of Performance Solutions

The Board has agreed to include the new provision for the process to document Performance Solutions in NCC 2019 Amendment 1.

A copy of the Final Regulation Impact Statement can be downloaded from the Resource Library.

The Board also determined that the process for documenting Performance Solutions set out in NCC 2019 Amendment 1 not come into effect until 1 July 2021. It should be noted, however, that appropriate documentation for Performance Solutions should be occurring now and that the process outlined in Amendment 1 can be used for this purpose.


Adoption of NCC 2019 Amendment 1

NCC 2019 Amendment 1 will be adopted by the States and Territories from 1 July 2020.

The ABCB will not be issuing an updated preview of NCC 2019 Amendment 1. The final version will be available, via the NCC Suite, from 1 July 2020

 Please visit the ABCB website.

Unknown Author, 2020, Australian Building Codes Board (

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