Plumbing questions: NCC and AS/NZS 3500
For plumbers, gasfitters and drainers: ask about water, sanitary, stormwater and gas work, or upload a photo, and get the Plumbing Code or state rule to check.
Guides: Wet-area waterproofing: what the NCC asks for · Roof drainage: gutters, downpipes and overflow
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ComplianceApp is a coaching aid, not a substitute for a registered building surveyor, certifier, engineer or licensed practitioner. Always verify requirements against the official National Construction Code for your jurisdiction and adoption date. Outputs can be wrong. The Australian Building Codes Board does not endorse this tool.
The National Construction Code 2025 and the National Construction Code 2022 were provided by the Australian Building Codes Board under the CC BY 4.0 licence.
The following are licensed under CC BY-ND 4.0. Text quoted from them is unchanged. Our explanations are not part of these documents.
- NCC 2019 Volume Two Amendment 1: © Commonwealth of Australia and the States and Territories 2020, published by the Australian Building Codes Board.
- NCC 2022 Consolidated Requirements: © Commonwealth of Australia and the States and Territories 2022, published by the Australian Building Codes Board.
- NCC 2022 Livable Housing Design Standard: © Commonwealth of Australia and the States and Territories 2022, published by the Australian Building Codes Board.
- Standard for Construction of Buildings in Flood Hazard Areas: © Commonwealth of Australia and States and Territories 2019, published by the Australian Building Codes Board.
- NatHERS Heating and Cooling Load Limits: © Commonwealth of Australia and the States and Territories 2022, published by the Australian Building Codes Board.
- Standard for Whole-of-home Efficiency Factors: © Commonwealth of Australia and the States and Territories 2022, published by the Australian Building Codes Board.