# Building Codes in Australia: NCC by State Which edition of the National Construction Code applies in each Australian state and territory — the NCC adoption tracker, updated as states move to NCC 2025. - Canonical HTML: https://www.chippy.tools/building-codes/au/ - Publisher: Chippy Tools - Language: en - Updated: 2026-09-12 [Browse all topics](https://www.chippy.tools/building-codes/topics/)[Free web tools](https://www.chippy.tools/building-codes/tools/)[Printable references](https://www.chippy.tools/building-codes/printables/) [All countries](https://www.chippy.tools/building-codes/) [Australia](https://www.chippy.tools/building-codes/au/) [Start here](https://www.chippy.tools/building-codes/au/ncc-for-chippies/) Topics Stairs - [NCC Stair Requirements: Riser, Going & the 2R+G Rule Explained](https://www.chippy.tools/building-codes/au/stairs/ncc-stair-requirements/) - [Maximum & Minimum Stair Riser Heights in Australia](https://www.chippy.tools/building-codes/au/stairs/stair-riser-heights/) - [How to Calculate Stairs: Rise, Run & Number of Steps](https://www.chippy.tools/building-codes/au/stairs/how-to-calculate-stairs/) - [Balustrade Height Requirements: When Do You Need One?](https://www.chippy.tools/building-codes/au/stairs/balustrade-height-requirements/) - [Stair Winders & Landings (NCC 2025)](https://www.chippy.tools/building-codes/au/stairs/stair-winders-and-landings/) Timber framing - [AS 1684 Span Tables Explained: Start with the Inputs](https://www.chippy.tools/building-codes/au/framing/as-1684-span-tables-explained/) - [Wind Classification: The Input Your Frame Needs](https://www.chippy.tools/building-codes/au/framing/wind-classification-australia/) - [Floor Joist Spans: What Determines the Answer](https://www.chippy.tools/building-codes/au/framing/floor-joist-spans-explained/) - [Rafter Spans and Roof Members: Geometry Is Only the Start](https://www.chippy.tools/building-codes/au/framing/rafter-spans-and-roof-members/) - [MGP10 vs MGP12: Grade Is One Part of the Specification](https://www.chippy.tools/building-codes/au/framing/mgp10-vs-mgp12/) - [Stud Spacing: Start with the Wall Design](https://www.chippy.tools/building-codes/au/framing/stud-spacing-and-wall-framing/) - [Construction Timbers in Queensland: Check the Species Requirement](https://www.chippy.tools/building-codes/au/qld/construction-timbers-queensland/) Roofing - [Queensland Cyclone Tie-Downs: Which Wind Regions Count](https://www.chippy.tools/building-codes/au/qld/cyclone-tie-downs/) - [Minimum Roof Pitch (NCC 2025): Metal vs Tile](https://www.chippy.tools/building-codes/au/roofing/minimum-roof-pitch/) - [Gutters & Downpipes: NCC Sizing Basics](https://www.chippy.tools/building-codes/au/roofing/gutters-and-downpipes/) Footings - [Footing Sizes & Site Classification (AS 2870)](https://www.chippy.tools/building-codes/au/footings/footing-sizes-site-classification/) Room heights - [Minimum Ceiling Heights (NCC 2025)](https://www.chippy.tools/building-codes/au/rooms/minimum-ceiling-heights/) Ramps - [House Ramp Gradients: Choose the Right NCC Path](https://www.chippy.tools/building-codes/au/ramps/ramp-gradients/) Wet areas - [Wet Area Floor Wastes in Queensland (QDC MP 4.5)](https://www.chippy.tools/building-codes/au/qld/wet-area-floor-wastes/) - [Shower & Wet Area Waterproofing (NCC 2025)](https://www.chippy.tools/building-codes/au/wet-areas/waterproofing-requirements/) By state & territory - [Australian Capital Territory](https://www.chippy.tools/building-codes/au/act/) - [New South Wales](https://www.chippy.tools/building-codes/au/nsw/) - [Northern Territory](https://www.chippy.tools/building-codes/au/nt/) - [Queensland](https://www.chippy.tools/building-codes/au/qld/) - [South Australia](https://www.chippy.tools/building-codes/au/sa/) - [Tasmania](https://www.chippy.tools/building-codes/au/tas/) - [Victoria](https://www.chippy.tools/building-codes/au/vic/) - [Western Australia](https://www.chippy.tools/building-codes/au/wa/) Calculation guides - [Concrete Calculations: The Complete On-Site Guide](https://www.chippy.tools/building-codes/concrete/concrete-calculations-guide/) - [How to Calculate Concrete Volume for a Slab](https://www.chippy.tools/building-codes/concrete/concrete-volume-slab/) - [How Many Bags of Concrete Per m³? (20kg, 25kg, 40kg)](https://www.chippy.tools/building-codes/concrete/bags-of-concrete-per-m3/) - [Concrete for Post Holes: Volume Per Hole & Bags Needed](https://www.chippy.tools/building-codes/concrete/concrete-post-holes/) - [Concrete Mix Ratios Explained: 1:2:3, 1:2:4 & Water-Cement Ratio](https://www.chippy.tools/building-codes/concrete/concrete-mix-ratios/) - [Roof Pitch to Angle: Convert Rise/Run to Degrees & Grade](https://www.chippy.tools/building-codes/concrete/roof-pitch-to-angle/) - [Rafter Length Calculation: Run, Rise & Overhang](https://www.chippy.tools/building-codes/concrete/rafter-length/) - [Stair Rise & Run Setout: Riser, Going & the 2R+G Formula](https://www.chippy.tools/building-codes/concrete/stair-rise-and-run-setout/) - [How to Convert a Fall or Gradient: Ratio, Percentage & Degrees](https://www.chippy.tools/building-codes/concrete/fall-and-gradient-conversion/) - [Stud & Joist Spacing Takeoff: How Many at 400, 450 & 600 mm Centres](https://www.chippy.tools/building-codes/concrete/stud-and-joist-spacing-takeoff/) - [Gravel & Base Volume: Compacted Depth vs Loose-Fill Order Quantity](https://www.chippy.tools/building-codes/concrete/gravel-and-base-volume/) In this section [Browse all topics](https://www.chippy.tools/building-codes/topics/)[Free web tools](https://www.chippy.tools/building-codes/tools/)[Printable references](https://www.chippy.tools/building-codes/printables/) [All countries](https://www.chippy.tools/building-codes/) [Australia](https://www.chippy.tools/building-codes/au/) [Start here](https://www.chippy.tools/building-codes/au/ncc-for-chippies/) Topics Stairs - [NCC Stair Requirements: Riser, Going & the 2R+G Rule Explained](https://www.chippy.tools/building-codes/au/stairs/ncc-stair-requirements/) - [Maximum & Minimum Stair Riser Heights in Australia](https://www.chippy.tools/building-codes/au/stairs/stair-riser-heights/) - [How to Calculate Stairs: Rise, Run & Number of Steps](https://www.chippy.tools/building-codes/au/stairs/how-to-calculate-stairs/) - [Balustrade Height Requirements: When Do You Need One?](https://www.chippy.tools/building-codes/au/stairs/balustrade-height-requirements/) - [Stair Winders & Landings (NCC 2025)](https://www.chippy.tools/building-codes/au/stairs/stair-winders-and-landings/) Timber framing - [AS 1684 Span Tables Explained: Start with the Inputs](https://www.chippy.tools/building-codes/au/framing/as-1684-span-tables-explained/) - [Wind Classification: The Input Your Frame Needs](https://www.chippy.tools/building-codes/au/framing/wind-classification-australia/) - [Floor Joist Spans: What Determines the Answer](https://www.chippy.tools/building-codes/au/framing/floor-joist-spans-explained/) - [Rafter Spans and Roof Members: Geometry Is Only the Start](https://www.chippy.tools/building-codes/au/framing/rafter-spans-and-roof-members/) - [MGP10 vs MGP12: Grade Is One Part of the Specification](https://www.chippy.tools/building-codes/au/framing/mgp10-vs-mgp12/) - [Stud Spacing: Start with the Wall Design](https://www.chippy.tools/building-codes/au/framing/stud-spacing-and-wall-framing/) - [Construction Timbers in Queensland: Check the Species Requirement](https://www.chippy.tools/building-codes/au/qld/construction-timbers-queensland/) Roofing - [Queensland Cyclone Tie-Downs: Which Wind Regions Count](https://www.chippy.tools/building-codes/au/qld/cyclone-tie-downs/) - [Minimum Roof Pitch (NCC 2025): Metal vs Tile](https://www.chippy.tools/building-codes/au/roofing/minimum-roof-pitch/) - [Gutters & Downpipes: NCC Sizing Basics](https://www.chippy.tools/building-codes/au/roofing/gutters-and-downpipes/) Footings - [Footing Sizes & Site Classification (AS 2870)](https://www.chippy.tools/building-codes/au/footings/footing-sizes-site-classification/) Room heights - [Minimum Ceiling Heights (NCC 2025)](https://www.chippy.tools/building-codes/au/rooms/minimum-ceiling-heights/) Ramps - [House Ramp Gradients: Choose the Right NCC Path](https://www.chippy.tools/building-codes/au/ramps/ramp-gradients/) Wet areas - [Wet Area Floor Wastes in Queensland (QDC MP 4.5)](https://www.chippy.tools/building-codes/au/qld/wet-area-floor-wastes/) - [Shower & Wet Area Waterproofing (NCC 2025)](https://www.chippy.tools/building-codes/au/wet-areas/waterproofing-requirements/) By state & territory - [Australian Capital Territory](https://www.chippy.tools/building-codes/au/act/) - [New South Wales](https://www.chippy.tools/building-codes/au/nsw/) - [Northern Territory](https://www.chippy.tools/building-codes/au/nt/) - [Queensland](https://www.chippy.tools/building-codes/au/qld/) - [South Australia](https://www.chippy.tools/building-codes/au/sa/) - [Tasmania](https://www.chippy.tools/building-codes/au/tas/) - [Victoria](https://www.chippy.tools/building-codes/au/vic/) - [Western Australia](https://www.chippy.tools/building-codes/au/wa/) Calculation guides - [Concrete Calculations: The Complete On-Site Guide](https://www.chippy.tools/building-codes/concrete/concrete-calculations-guide/) - [How to Calculate Concrete Volume for a Slab](https://www.chippy.tools/building-codes/concrete/concrete-volume-slab/) - [How Many Bags of Concrete Per m³? (20kg, 25kg, 40kg)](https://www.chippy.tools/building-codes/concrete/bags-of-concrete-per-m3/) - [Concrete for Post Holes: Volume Per Hole & Bags Needed](https://www.chippy.tools/building-codes/concrete/concrete-post-holes/) - [Concrete Mix Ratios Explained: 1:2:3, 1:2:4 & Water-Cement Ratio](https://www.chippy.tools/building-codes/concrete/concrete-mix-ratios/) - [Roof Pitch to Angle: Convert Rise/Run to Degrees & Grade](https://www.chippy.tools/building-codes/concrete/roof-pitch-to-angle/) - [Rafter Length Calculation: Run, Rise & Overhang](https://www.chippy.tools/building-codes/concrete/rafter-length/) - [Stair Rise & Run Setout: Riser, Going & the 2R+G Formula](https://www.chippy.tools/building-codes/concrete/stair-rise-and-run-setout/) - [How to Convert a Fall or Gradient: Ratio, Percentage & Degrees](https://www.chippy.tools/building-codes/concrete/fall-and-gradient-conversion/) - [Stud & Joist Spacing Takeoff: How Many at 400, 450 & 600 mm Centres](https://www.chippy.tools/building-codes/concrete/stud-and-joist-spacing-takeoff/) - [Gravel & Base Volume: Compacted Depth vs Loose-Fill Order Quantity](https://www.chippy.tools/building-codes/concrete/gravel-and-base-volume/) [Building Codes](https://www.chippy.tools/building-codes/) Australia # Building Codes in Australia: NCC by State The National Construction Code sets the minimum requirements for building in Australia, but each state and territory adopts new editions on its own timeline. This hub tracks which edition applies where, and links the rules you can actually calculate. ## Which edition applies, by state & territory | Jurisdiction | Current code | Next edition | Adoption / transition | Status | |---------------------------------------------------------------------------------|------------------|------------------------------------------|----------------------------------------------------------------------------------------------------------------|------------| | [Australian Capital Territory](https://www.chippy.tools/building-codes/au/act/) | NCC 2022 or 2025 | NCC 2025 (mandatory 1 May 2027) | Mid-transition: build to NCC 2022 (+ACT Appendix) or NCC 2025 (+ACT Appendix). NCC 2025 becomes mandatory 1… | Transition | | [New South Wales](https://www.chippy.tools/building-codes/au/nsw/) | NCC 2022 | NCC 2025 (from 1 May 2027) | NSW deferred NCC 2025 to 1 May 2027 — build to NCC 2022 until then. | Announced | | [Northern Territory](https://www.chippy.tools/building-codes/au/nt/) | NCC 2022 | Not adopted | NCC 2022 continues in the NT; NCC 2025 is not adopted (stays until the next NCC edition is published). | Frozen | | [Queensland](https://www.chippy.tools/building-codes/au/qld/) | NCC 2022 | NCC 2025 (from 1 May 2027) | NCC 2022 still applies to houses, sheds & decks; NCC 2025 is deferred to 1 May 2027. | Announced | | [South Australia](https://www.chippy.tools/building-codes/au/sa/) | NCC 2022 (Amd 2) | NCC 2025 (Building Code from 1 May 2027) | Houses, sheds & decks stay on NCC 2022 until 30 Apr 2027; the NCC 2025 Building Code starts 1 May 2027… | Announced | | [Tasmania](https://www.chippy.tools/building-codes/au/tas/) | NCC 2022 | NCC 2025 (scheduled 1 May 2027) | Tasmania reinstated NCC 2022 (from 5 Jun 2026). NCC 2025 is scheduled for 1 May 2027, but that date may still… | Frozen | | [Victoria](https://www.chippy.tools/building-codes/au/vic/) | NCC 2025 | — | In force since 1 May 2026. Residential energy & livable-housing requirements are unchanged from NCC 2022. | Adopted | | [Western Australia](https://www.chippy.tools/building-codes/au/wa/) | NCC 2025 | — | Adopted 1 May 2026 with a 12-month transition — either NCC 2022 or 2025 until 1 May 2027, then NCC 2025 only. | Transition | - [Australian Capital Territory](https://www.chippy.tools/building-codes/au/act/) Transition Current NCC 2022 or 2025 Next NCC 2025 (mandatory 1 May 2027) Mid-transition: build to NCC 2022 (+ACT Appendix) or NCC 2025 (+ACT Appendix). NCC 2025 becomes mandatory 1 May 2027. - [New South Wales](https://www.chippy.tools/building-codes/au/nsw/) Announced Current NCC 2022 Next NCC 2025 (from 1 May 2027) NSW deferred NCC 2025 to 1 May 2027 — build to NCC 2022 until then. - [Northern Territory](https://www.chippy.tools/building-codes/au/nt/) Frozen Current NCC 2022 Next Not adopted NCC 2022 continues in the NT; NCC 2025 is not adopted (stays until the next NCC edition is published). - [Queensland](https://www.chippy.tools/building-codes/au/qld/) Announced Current NCC 2022 Next NCC 2025 (from 1 May 2027) NCC 2022 still applies to houses, sheds & decks; NCC 2025 is deferred to 1 May 2027. - [South Australia](https://www.chippy.tools/building-codes/au/sa/) Announced Current NCC 2022 (Amd 2) Next NCC 2025 (Building Code from 1 May 2027) Houses, sheds & decks stay on NCC 2022 until 30 Apr 2027; the NCC 2025 Building Code starts 1 May 2027 (Plumbing Code already in force). - [Tasmania](https://www.chippy.tools/building-codes/au/tas/) Frozen Current NCC 2022 Next NCC 2025 (scheduled 1 May 2027) Tasmania reinstated NCC 2022 (from 5 Jun 2026). NCC 2025 is scheduled for 1 May 2027, but that date may still change. - [Victoria](https://www.chippy.tools/building-codes/au/vic/) Adopted Current NCC 2025 Next — In force since 1 May 2026. Residential energy & livable-housing requirements are unchanged from NCC 2022. - [Western Australia](https://www.chippy.tools/building-codes/au/wa/) Transition Current NCC 2025 Next — Adopted 1 May 2026 with a 12-month transition — either NCC 2022 or 2025 until 1 May 2027, then NCC 2025 only. Adoption timing changes on government timelines — entries marked *Verify* are being confirmed with the relevant authority. ## Rules by topic Find guidance for the work you are doing, then confirm the requirements for your building and location. New to the NCC? [Start with the rule book →](https://www.chippy.tools/building-codes/au/ncc-for-chippies/) ### Stairs - [NCC Stair Requirements: Riser, Going & the 2R+G Rule Explained](https://www.chippy.tools/building-codes/au/stairs/ncc-stair-requirements/) - [Maximum & Minimum Stair Riser Heights in Australia](https://www.chippy.tools/building-codes/au/stairs/stair-riser-heights/) - [How to Calculate Stairs: Rise, Run & Number of Steps](https://www.chippy.tools/building-codes/au/stairs/how-to-calculate-stairs/) - [Balustrade Height Requirements: When Do You Need One?](https://www.chippy.tools/building-codes/au/stairs/balustrade-height-requirements/) - [Stair Winders & Landings (NCC 2025)](https://www.chippy.tools/building-codes/au/stairs/stair-winders-and-landings/) ### Timber framing - [AS 1684 Span Tables Explained: Start with the Inputs](https://www.chippy.tools/building-codes/au/framing/as-1684-span-tables-explained/) - [Wind Classification: The Input Your Frame Needs](https://www.chippy.tools/building-codes/au/framing/wind-classification-australia/) - [Floor Joist Spans: What Determines the Answer](https://www.chippy.tools/building-codes/au/framing/floor-joist-spans-explained/) - [Rafter Spans and Roof Members: Geometry Is Only the Start](https://www.chippy.tools/building-codes/au/framing/rafter-spans-and-roof-members/) - [MGP10 vs MGP12: Grade Is One Part of the Specification](https://www.chippy.tools/building-codes/au/framing/mgp10-vs-mgp12/) - [Stud Spacing: Start with the Wall Design](https://www.chippy.tools/building-codes/au/framing/stud-spacing-and-wall-framing/) - [Construction Timbers in Queensland: Check the Species Requirement](https://www.chippy.tools/building-codes/au/qld/construction-timbers-queensland/) ### Roofing - [Queensland Cyclone Tie-Downs: Which Wind Regions Count](https://www.chippy.tools/building-codes/au/qld/cyclone-tie-downs/) - [Minimum Roof Pitch (NCC 2025): Metal vs Tile](https://www.chippy.tools/building-codes/au/roofing/minimum-roof-pitch/) - [Gutters & Downpipes: NCC Sizing Basics](https://www.chippy.tools/building-codes/au/roofing/gutters-and-downpipes/) ### Footings & slabs - [Footing Sizes & Site Classification (AS 2870)](https://www.chippy.tools/building-codes/au/footings/footing-sizes-site-classification/) ### Room heights - [Minimum Ceiling Heights (NCC 2025)](https://www.chippy.tools/building-codes/au/rooms/minimum-ceiling-heights/) ### Ramps - [House Ramp Gradients: Choose the Right NCC Path](https://www.chippy.tools/building-codes/au/ramps/ramp-gradients/) ### Wet areas - [Wet Area Floor Wastes in Queensland (QDC MP 4.5)](https://www.chippy.tools/building-codes/au/qld/wet-area-floor-wastes/) - [Shower & Wet Area Waterproofing (NCC 2025)](https://www.chippy.tools/building-codes/au/wet-areas/waterproofing-requirements/) ## Which edition applies to my job? Two things decide it. Where you’re building — which **state or territory**. And **when the building approval goes in**. The certifier checks your job against the rule book in force on the day the approval is lodged. So that day is the one that counts — not the day you pour or frame. Here’s the quick version: - [**Victoria**](https://www.chippy.tools/building-codes/au/vic/) and [**Western Australia**](https://www.chippy.tools/building-codes/au/wa/) — already on NCC 2025. In WA you can still lodge under NCC 2022 for now, but from 1 May 2027 it’s NCC 2025 only. - [**ACT**](https://www.chippy.tools/building-codes/au/act/) — halfway through the switch. Right now you can lodge under NCC 2022 or NCC 2025 (both with the extra ACT rules on top). NCC 2025 is a must from 1 May 2027. - [**Queensland**](https://www.chippy.tools/building-codes/au/qld/), [**New South Wales**](https://www.chippy.tools/building-codes/au/nsw/) and [**South Australia**](https://www.chippy.tools/building-codes/au/sa/) — still on NCC 2022, moving to NCC 2025 from 1 May 2027. (SA’s plumbing rules are already on the 2025 edition.) - [**Northern Territory**](https://www.chippy.tools/building-codes/au/nt/) and [**Tasmania**](https://www.chippy.tools/building-codes/au/tas/) — staying on NCC 2022 for now. If your approval date is close to a changeover, check your **state page** above for the exact start date and the rules for the switch-over. That’s where the detail sits, and it’s kept up to date as the dates lock in. ## Why the timing is different in each state The ABCB writes the National Construction Code for the whole country — NCC 2025 came out on 1 May 2026. But writing it isn’t the same as bringing it in. Each state and territory picks its own start date under its own laws. That’s why the map is a mix, not one national switch. States can also push the start back (QLD, NSW and SA moved theirs to 2027). They can bring in the parts at different times (SA started its plumbing rules before its building rules). Or they can stay on an older edition (NT and Tasmania are sticking with NCC 2022 for now). So the honest answer to “is NCC 2025 in force?” is always: it depends where you are. ## Still on NCC 2022? No need to panic if your area hasn’t switched yet. Most of the numbers a chippy sets out on site are the same in both editions — stair rise and going, barrier and rail heights, guarding to drops, concrete amounts. When it does matter, check the exact clause against the edition your job is signed off under (your state page tells you which). Don’t just assume a new edition has changed the number. ## Work it out on site Knowing the rules is one thing. Getting them right with a tape and a calculator is another. These guides walk the real measurements: - [**NCC stairs for chippies**](https://www.chippy.tools/building-codes/au/ncc-for-chippies/) — rise, going, the 2R+G check and landing rules, done the way you set them out on the job. - [**Concrete calculations guide**](https://www.chippy.tools/building-codes/concrete/concrete-calculations-guide/) — how to work out slab, footing and post-hole volumes, and turn cubic metres into bags or a truck order. ## By state & territory - [Australian Capital Territory](https://www.chippy.tools/building-codes/au/act/) - [New South Wales](https://www.chippy.tools/building-codes/au/nsw/) - [Northern Territory](https://www.chippy.tools/building-codes/au/nt/) - [Queensland](https://www.chippy.tools/building-codes/au/qld/) - [South Australia](https://www.chippy.tools/building-codes/au/sa/) - [Tasmania](https://www.chippy.tools/building-codes/au/tas/) - [Victoria](https://www.chippy.tools/building-codes/au/vic/) - [Western Australia](https://www.chippy.tools/building-codes/au/wa/) Content adapted from the National Construction Code 2022, provided by the Australian Building Codes Board under the CC BY 4.0 licence. This page is general information for tradespeople and is not compliance, engineering or legal advice. Requirements are subject to state and territory variations and adoption timing. Always confirm requirements with your building certifier and relevant state authority. ## Page directory - [AS 1684 Span Tables Explained: Start with the Inputs](https://www.chippy.tools/building-codes/au/framing/as-1684-span-tables-explained/index.md): Learn how to choose the applicable timber-framing reference and read a span-table result in its full design context. - [Balustrade Height Requirements: When Do You Need One?](https://www.chippy.tools/building-codes/au/stairs/balustrade-height-requirements/index.md): When the NCC 2025 makes a balustrade compulsory, how high it has to be, and the gap limit that stops a kid slipping through — with a worked deck example. - [Building Code Requirements in New South Wales](https://www.chippy.tools/building-codes/au/nsw/index.md): Which edition of the National Construction Code applies in New South Wales, its adoption timeline, and the state-specific variations that affect what you build. - [Building Code Requirements in Queensland](https://www.chippy.tools/building-codes/au/qld/index.md): Which edition of the National Construction Code applies in Queensland, its adoption timeline, and the state-specific variations that affect what you build. - [Building Code Requirements in South Australia](https://www.chippy.tools/building-codes/au/sa/index.md): Which edition of the National Construction Code applies in South Australia, its adoption timeline, and the state-specific variations that affect what you build. - [Building Code Requirements in Tasmania](https://www.chippy.tools/building-codes/au/tas/index.md): Which edition of the National Construction Code applies in Tasmania, its adoption timeline, and the state-specific variations that affect what you build. - [Building Code Requirements in the Australian Capital Territory](https://www.chippy.tools/building-codes/au/act/index.md): Which edition of the National Construction Code applies in the Australian Capital Territory, its adoption timeline, and the state-specific variations that affect what you build. - [Building Code Requirements in the Northern Territory](https://www.chippy.tools/building-codes/au/nt/index.md): Which edition of the National Construction Code applies in the Northern Territory, its adoption timeline, and the state-specific variations that affect what you build. - [Building Code Requirements in Victoria](https://www.chippy.tools/building-codes/au/vic/index.md): Which edition of the National Construction Code applies in Victoria, its adoption timeline, and the state-specific variations that affect what you build. - [Building Code Requirements in Western Australia](https://www.chippy.tools/building-codes/au/wa/index.md): Which edition of the National Construction Code applies in Western Australia, its adoption timeline, and the state-specific variations that affect what you build. - [Floor Joist Spans: What Determines the Answer](https://www.chippy.tools/building-codes/au/framing/floor-joist-spans-explained/index.md): Understand why joist grade, size, spacing, supports and floor loading must be considered together before using a span table. - [Footing Sizes & Site Classification (AS 2870)](https://www.chippy.tools/building-codes/au/footings/footing-sizes-site-classification/index.md): How your block gets classified A to P under AS 2870, what the NCC makes you do before you pour, the NCC's 20 MPa (N20) minimum, and why the exact grade and cover come off the plan. - [Gutters & Downpipes: NCC Sizing Basics](https://www.chippy.tools/building-codes/au/roofing/gutters-and-downpipes/index.md): How the NCC sizes house gutters and downpipes — the 12 m-per-downpipe rule, the catchment-and-rainfall method, and when AS/NZS 3500.3 kicks in for box gutters. - [House Ramp Gradients: Choose the Right NCC Path](https://www.chippy.tools/building-codes/au/ramps/ramp-gradients/index.md): Distinguish ordinary house ramps from the Livable Housing access path. Check the adopted edition, aggregate ramp length and landings. - [How to Calculate Stairs: Rise, Run & Number of Steps](https://www.chippy.tools/building-codes/au/stairs/how-to-calculate-stairs/index.md): A step-by-step method for sizing a stair from your floor-to-floor height and available run — risers, riser height, going and total run — each checked against NCC 2025 limits and the 2R+G rule. - [Maximum & Minimum Stair Riser Heights in Australia](https://www.chippy.tools/building-codes/au/stairs/stair-riser-heights/index.md): The maximum and minimum stair riser height under NCC 2025 Housing Provisions 11.2 — why every riser in a flight must match, and how to size risers from a floor-to-floor height. - [MGP10 vs MGP12: Grade Is One Part of the Specification](https://www.chippy.tools/building-codes/au/framing/mgp10-vs-mgp12/index.md): Understand machine-graded pine labels and why grade, section, treatment and approved design must be checked separately. - [Minimum Ceiling Heights (NCC 2025)](https://www.chippy.tools/building-codes/au/rooms/minimum-ceiling-heights/index.md): The NCC's minimum ceiling heights room by room — 2.4 m for living, 2.1 m for wet and utility rooms — plus the two-thirds rule for raked ceilings and attics. - [Minimum Roof Pitch (NCC 2025): Metal vs Tile](https://www.chippy.tools/building-codes/au/roofing/minimum-roof-pitch/index.md): What sets your roof's minimum pitch under the NCC — the code fixes it for metal sheet, your tile maker sets it for tiles — and how to check your pitch fast. - [NCC Stair Requirements: Riser, Going & the 2R+G Rule Explained](https://www.chippy.tools/building-codes/au/stairs/ncc-stair-requirements/index.md): The NCC 2025 rules for private stairs — maximum riser, minimum going, and the 2R+G comfort formula — explained in plain English, with a worked example. - [Rafter Spans and Roof Members: Geometry Is Only the Start](https://www.chippy.tools/building-codes/au/framing/rafter-spans-and-roof-members/index.md): Separate roof geometry from structural member selection, including loading, support arrangements and the approved roof design. - [Shower & Wet Area Waterproofing (NCC 2025)](https://www.chippy.tools/building-codes/au/wet-areas/waterproofing-requirements/index.md): What the NCC makes you waterproof in a bathroom — shower walls to 1800 mm, the shower floor, and the 150 mm rule at baths and basins — plus where AS 3740 fits. - [Stair Winders & Landings (NCC 2025)](https://www.chippy.tools/building-codes/au/stairs/stair-winders-and-landings/index.md): How to turn a stair the right way — winder goings measured on the walking line, when you need a landing, and the 3-winders-per-quarter-turn rule. - [Stud Spacing: Start with the Wall Design](https://www.chippy.tools/building-codes/au/framing/stud-spacing-and-wall-framing/index.md): Why stud spacing depends on the wall design, loads and lining or cladding system, and how to separate a take-off from structural approval. - [The NCC for Chippies: Every Rule You Can Calculate (2026 Guide)](https://www.chippy.tools/building-codes/au/ncc-for-chippies/index.md): A plain-English map to the NCC for residential builders — Volume Two, the ABCB Housing Provisions, Class 1 & 10 buildings, and every rule you can actually put a number to. - [Wind Classification: The Input Your Frame Needs](https://www.chippy.tools/building-codes/au/framing/wind-classification-australia/index.md): Why the site wind classification matters to framing, tie-downs and component selection, and where to find the project's assessed value.