What Is the National Construction Code?
The National Construction Code (NCC) is Australia’s primary set of technical requirements for the design, construction, and performance of buildings and plumbing/drainage installations. It is produced and maintained by the Australian Building Codes Board (ABCB) and applies uniformly across all states and territories, though each jurisdiction may adopt it with local variations or additions.
Structure of the NCC
The NCC is divided into three volumes:
- Volume One (BCA) — covers Class 2 to Class 9 buildings (multi-residential, commercial, industrial, and public buildings)
- Volume Two (BCA) — covers Class 1 and Class 10 buildings (houses, sheds, carports, swimming pools, and associated structures)
- Volume Three (PCA) — the Plumbing Code of Australia, covering plumbing and drainage installations
The NCC uses a performance-based framework, meaning builders can either follow the prescriptive Deemed-to-Satisfy (DtS) solutions or propose alternative Performance Solutions that achieve the same outcome. Key areas covered include structural adequacy, fire safety, access and egress, moisture management, energy efficiency, and sustainability.
The NCC is updated on a three-year cycle. The 2025 edition introduced strengthened energy efficiency requirements (including all-electric readiness provisions) and updated condensation management rules.
How States Apply the NCC
While the NCC is a national document, each state and territory adopts it through their own legislation and may add state-specific variations. For example, Queensland has additional cyclone-rated construction requirements for certain regions, and Victoria has specific bushfire construction requirements.
How It Relates to Licence Verification
Licensed builders are expected to understand and comply with the NCC. Building certifiers assess work against NCC requirements when issuing building permits and compliance certificates. If your builder is not licensed, there is no assurance they understand or will comply with the NCC. Verify your builder’s licence through TradieVerify to ensure they have the qualifications and accountability to deliver code-compliant work.