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Build a frontier AEC practice.

Australian architects, builders and building consultants trust AEC Assistant with their highest-stakes compliance work. Free for NCC 2025 and NCC 2022, and for planning on any address in Australia.

Try it freeSee how it works

Used daily by architects, builders and contracts managers at

  • Project Co
  • Cobild
  • Loxton Built

One question in. The clause out.

  • Cited to the clause

    Every figure arrives with the clause it came from, as a chip you can open, so checking an answer takes seconds.

  • The right edition, the right state

    NCC 2019, 2022 and 2025 are all indexed, with the legislation of all eight states and territories. The assistant works out which edition and which jurisdiction govern the project before it answers.

See the platform
An answer in AEC Assistant giving 2.4 m for habitable rooms and 2.1 m for corridors in a Class 2 building, each line carrying an NCC 2025 V1 F5D2 clause chip

Bring the project in.

On Plus and Max a project holds the site, the documents and everything you have decided so far.

  • Planning for any address

    Zone, overlays, heritage, bushfire and utilities arrive from state planning data the moment a project gets an address, with the NCC climate zone alongside.

  • Your drawings, read with the Code

    Upload drawing sets, specifications and reports. A question is answered against your documents and the Code in the same breath.

  • Reports that land as documents

    Site check, plan review, revision compare and fee proposal run in the background and arrive in the project as files.

Plans and pricing
A project's site information: the satellite view of the site at 355-369 Spencer Street, its address, lot area, council, zoning and overlays fetched from state planning data

Built for the people who sign the drawings.

“As a builder who regularly checks the National Construction Code, AEC Assistant has made my work much easier. Its summaries are concise, accurate, and include links to the relevant NCC sections, which is perfect for when I want to read the code myself. The responses are quick, saving me time on-site, and the interface is intuitive and easy to navigate.”

JamesDirectorLoxton Built

Built on the sources, not around them

  • NCC editions indexed, 2019 to 20253
  • states and territories covered8
  • deterministic calculators, free to use7
  • domain methods, from planning to fee proposals31

Seven calculators. No account.

Every table transcribed from NCC 2022 Amendment 2. The same inputs always give the same result.

  • Riser, going and 2R+G for a public, private or accessible stair, drawn as a section and checked against Table D3D14, the Housing Provisions and AS 1428.1.

    Open the calculator
    The stair calculator: a 175 mm riser and 280 mm going drawn as a section, 2R+G of 630 mm marked Pass against NCC 2022 Volume One Table D3D14

  • Gradient from rise and length, then landings, handrails and clear width for a walkway, ramp, step ramp or kerb ramp under AS 1428.1:2021.

    Open the calculator
    The ramp calculator: a 300 mm rise over 4.2 m drawn as a section, the 1:14 gradient checked against AS 1428.1:2021

  • The Bowman-Sapolinski contrast between two light reflectance values, against the 30%, 45% or 60% the scenario requires, with a swatch of the pair.

    Open the calculator
    The luminance contrast calculator comparing a door frame of LRV 20 with a wall of LRV 70 and reporting the contrast against the 30% minimum

  • Natural light and ventilation for a room, direct or borrowed through an adjoining room or roof light, against Part F6 and Housing Provisions 10.5 and 10.6.

    Open the calculator
    The light and ventilation calculator: gauges of glazed and openable area provided against the 10% and 5% of floor area a habitable room needs

  • Occupant numbers from Table D2D18, then the number of exits, aggregate exit width and travel distance the storey needs under Part D2.

    Open the calculator
    The occupancy and exits calculator: an office of 850 square metres giving 85 people, two exits and a 2 m aggregate width checked against Part D2

  • Pans, urinals, basins and accessible facilities for every building class from the F4D4 tables, with a male and female split or the 50/50 default.

    Open the calculator
    The sanitary facilities calculator: pans, urinals, basins and accessible facilities required for 120 employees, compared with what is provided

  • Downpipe and gutter sizing for a roof catchment from the Housing Provisions Part 7.4 tables, with the design rainfall for the locality and the overflow measures counted.

    Open the calculator
    The gutters and downpipes calculator: a 45 square metre roof in Sydney with overflow measures, gauged against the Housing Provisions Part 7.4 tables
About the calculators

Guides, cited to the clause

All guides

Questions, answered

Where do the answers come from?

From the source documents themselves: the National Construction Code in every current edition, state building and planning legislation, ABCB handbooks and the standards the code references, searched directly rather than recalled from training. Every answer cites the clauses it relied on, and the citation opens the source so you can check the wording yourself.

Which NCC edition does it use?

NCC 2019, 2022 and 2025 are all indexed, and answers are scoped to the edition that applies to your project. Adoption dates differ by state, so the assistant resolves which edition governs before it answers, and it can compare editions clause by clause when you need to know what changed.

What does the free plan include?

Full-text search of NCC 2025 and NCC 2022 with citations, and Australia-wide planning information for any address. Paid plans add projects, document upload and deeper knowledge of the standards the code references.

Does it work outside New South Wales and Victoria?

Yes. All eight states and territories are covered, and a project's jurisdiction overrides whatever is selected in the interface, so a Queensland project is answered against Queensland legislation even if you were last reading something for NSW.

Can it read my own project documents?

On the paid plans, yes. Upload drawings, specifications, consultant reports and planning permits to a project and they are read alongside the regulatory corpus, so a question can be answered against your drawing set and the Code in the same breath.

Are the calculators generated by the model?

No. The calculators are deterministic code, with every table transcribed and verified against the NCC source and covered by unit tests. The same inputs always produce the same result, without a model in the loop. The assistant can explain a result; it does not compute it.

Does this replace a certifier or a registered practitioner?

No. It is a research and drafting tool for professionals. It accelerates finding, reading and applying the right provisions and shows its sources so you can verify them, but the professional judgement, the certification and the liability remain yours.

Ask it the question you were about to look up

Free for NCC 2025 and NCC 2022 with citations, and planning information for any address in Australia. No credit card.

Try it freeSee plans and pricing