Materials, Standards & Quantities for 20,000 Homes

Technical overview for planners and suppliers. Figures below are indicative planning quantities based on a reference dwelling of ~75 m² GFA per home (modular construction) and will be refined per design package and state requirements.

Key specs: NCC 2022

NatHERS 7*

AS/NZS standards

Bushfire (AS 3959) where required

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BOM Summary – headline assumptions

Reference assumptions used for totals: 75 m²/home; steel intensity ~35 kg/m²; slab 150 mm; glazing ~6 m²/home; roofing/cladding ~90 m²/home; electrical cable ~150 m/home; plumbing ~80 m/home; 3 kW PV/home; 1 heat pump/home.

NCC 2022

AS/NZS

CodeMark (system)

NatHERS 7*

Structure (steel, concrete, panels)

Item	Key Standard(s)	Unit	Per home	Total – 20,000	Notes
Cold‑formed/light steel frames	AS/NZS 1163, AS/NZS 4600, AS/NZS 1397	t	2.6	52,000	~35 kg/m²; galvanised.
Reinforcing steel	AS/NZS 4671	t	0.6	12,000	Footings/slabs.
Concrete (25–40 MPa)	AS 1379, AS 3600	m³	11.25	225,000	150 mm slab equivalent.
Structural panels (wall/floor/roof)	AS/NZS 1170, AS/NZS 2908 (if FC)	m²	150	3,000,000	Composite/FC/steel deck per design.

Envelope (glazing, cladding, insulation)

Item	Key Standard(s)	Unit	Per home	Total – 20,000	Notes
Safety glazing	AS/NZS 2208; Windows/doors: AS 2047	m²	6	120,000	Low‑e glazing preferred.
External cladding/roofing	AS/NZS 1562, AS/NZS 4601 (metal)	m²	90	1,800,000	Includes fascia/flashings.
Insulation (walls/roof)	NCC 2022 energy; AS/NZS 4859.1	m²	90	1,800,000	R‑values to meet climate zones.
Bushfire compliance (where required)	AS 3959; BAL assessments	set	—	—	Applicable sites only.

Interior & Finishes

Item	Key Standard(s)	Unit	Per home	Total – 20,000	Notes
MDF/HDF/engineered boards	AS/NZS 1859; low‑formaldehyde	m²	40	800,000	Cabinetry/linings.
Flooring (engineered)	AS/NZS 4586 (slip)	m²	75	1,500,000	Wet areas per AS 3740.
Paints & coatings	AS/NZS 2312 (protection); low‑VOC	L	30	600,000	Interior/exterior.
Doors & windows (units)	AS 2047; AS 1288	ea	8 windows / 2 doors	160,000 / 40,000	Per dwelling.

MEP & Energy

Item	Key Standard(s)	Unit	Per home	Total – 20,000	Notes
Electrical wiring	AS/NZS 3000 (Wiring Rules); AS/NZS 3008	m	150	3,000,000	Includes data/ELV where specified.
Switchboard & RCDs	AS/NZS 61439; AS/NZS 61008	ea	1	20,000	Pre‑wired modules.
Lighting fixtures	AS/NZS 60598; MEPS	ea	12	240,000	LED; high efficacy.
Plumbing pipes & fittings	AS/NZS 3500 series	m	80	1,600,000	Water/waste/vent.
Sanitary sets	WaterMark; WELS	set	1	20,000	WC, basin, shower, kitchen.
Heat pump (HW/space)	MEPS; AS/NZS 3823	ea	1	20,000	All‑electric dwellings target.
Solar PV	AS/NZS 5033; AS/NZS 4777	kW	3	60,000	Indicative 3 kW/home.

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Logistics, Testing & Certification

ISO container

Packing & labelling; EDI shipment tracking to assembly hubs (NSW/WA/VIC).

NATA‑accredited testing

Program per material family; ILAC recognition for offshore labs.

CodeMark (system) preparation

For modular elements to streamline approvals.

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Downloadable schedules

CSV/XLSX schedules can be exported from the master BOM. Share your email and we’ll send the latest pack.

Notes & disclaimers

All quantities above are indicative for planning and supplier engagement only. Final schedules will be derived from certified design packages by state/lot, and may vary with typologies, climate zones, BAL requirements and program phasing.