Build to code. Build with confidence.
Every Keaton Mills unit is engineered against the live NCC 2022 framework. Click any standard below to view the official Australian requirement.
Live Standards Matrix — NCC 2022 Aligned
NCC 2022
ABCB
National Construction Code
Australia's primary building framework. Sets minimum standards for safety, health, amenity, and energy efficiency for all building classes.
- Class 1a habitable dwellings require 7-star NatHERS rating
- Deemed-to-Satisfy or Performance Solution compliance paths
- Prefab/modular handbook available from ABCB
AS/NZS 3000
Standards Australia
Electrical Wiring Rules
Governs all electrical installations in transportable structures. Mandatory RCM marking, Type A RCDs from April 2023.
- Type A RCDs mandatory for all final sub-circuits
- AS/NZS 3001 applies specifically to transportable structures
- Factory Chinese wiring must be re-terminated by licensed AU electrician
AS 3959
Standards Australia
Bushfire Construction (BAL)
Specifies construction requirements for buildings in bushfire-prone areas. BAL rating determines glazing, cladding and vent requirements.
- BAL levels: Low → 12.5 → 19 → 29 → 40 → FZ
- BAL-12.5: 6mm toughened glass, ember guards
- BAL-29+: Pyropanel non-combustible linings required
AS 3740
Standards Australia
Waterproofing — Domestic Wet Areas
Minimum requirements for waterproofing in bathrooms, laundries, and wet areas. Mandatory for all Class 1a dwellings with wet areas.
- 1.5mm liquid membrane minimum (Mapei Mapelastic or equal)
- 75mm minimum upstand to all walls
- Graded floor waste, 1:60 fall minimum
AS 4100
Standards Australia
Steel Structures
Structural steel design standard. Chinese Q235B/Q355B steel must be certified equivalent to AS/NZS 3678 Grade 250/350 by RPEQ engineer.
- Q235B ≈ AS/NZS 3678 Grade 250 (250 MPa yield)
- Q355B ≈ AS/NZS 3678 Grade 350 (355 MPa yield)
- RPEQ Form 15 required to certify overseas steel equivalence
AS 1428.1
Standards Australia
Access & Mobility
Mandatory for commercial site offices. Ensures equitable access for people with disabilities, including ramp gradients and doorway widths.
- 850mm minimum clear door opening
- 1:14 maximum ramp gradient for compliant access
- Tactile Ground Surface Indicators (TGSIs) required
AS/NZS 2107
Standards Australia
Acoustic Performance
Recommended design sound levels and reverberation times for building interiors. Crucial for quiet, productive office environments.
- Target Rw 35+ for external wall transmission loss
- Minimization of mechanical plant noise (AC systems)
- Double-glazed IGU panels provide superior dB reduction
AS 4055
Standards Australia
Wind Loads for Housing
Determines wind speed classes for housing (N1 to C4). Ensures structural integrity against extreme gust impacts and cyclonic pressure.
- Certified for Wind Region C (Cyclonic) up to 250km/h
- Specific tie-down anchorage requirements for transportables
- Engineering Form 15 structural certification included
Material Compliance Matrix
Which factory materials pass which Australian approval pathways.
| Material | Class 10b Office | Class 1a Habitable | BAL Rating | Notes |
|---|---|---|---|---|
| EPS 50mm (factory standard) | ✓ | ✗ | ✗ | B2 combustible — office/site use only |
| Rock Wool 75mm | ✓ | ✓ | ✓ | A1 non-combustible — recommended for all habitable |
| PU/PUF 75mm | ✓ | ⚠ | ✗ | B1 rated — needs CodeMark cert for Class 1a DTS |
| PIR 100mm | ✓ | ⚠ | ✗ | B1 rated — Performance Solution or CodeMark required |
| PVC Windows (factory) | ✓ | ✓ | ✗ | Not BAL-rated. Replace with 6mm toughened for BAL zones |
| Aluminium IGU 5/9/5mm | ✓ | ✓ | 12.5 | Suitable to BAL-12.5 with ember guard |
| PPGI Cladding (factory) | ✓ | ✓ | 12.5 | Compliant to BAL-12.5. Pyropanel required for BAL-29+ |
The Australian Approval Pathway
From factory import to council-approved building — what you need, in order, with real costs.
BAL Assessment
$300 – $700If in bushfire zoneRequired if property is in a Designated Bushfire-Prone Area. Completed by a licensed BAL assessor. Determines which AS 3959 construction level applies.
Structural Cert (RPEQ / CPEng)
$500 – $2,000All Class 1a + most Class 10bRPEQ engineer (QLD) or CPEng (other states) certifies the structural design aligns with AS 4100 and confirms Chinese steel grade equivalence. Issues Form 15.
NatHERS Energy Report
$600 – $900Class 1a habitable only7-star NatHERS rating required for Class 1a dwellings under NCC 2022. Accredited assessor models the thermal envelope using your panel specs.
Private Certifier / PCA
$1,200 – $3,000All building approvalsReplaces or supplements council assessment. In QLD: private building certifier. In NSW: CDC or PCA. Includes plan assessment, mandatory staged inspections, final certificate.
Council DA / CDC Lodgement
$130 – $500Council-dependentCouncil lodgement fees for DA (all states) or CDC application (NSW). Separate from certifier fees. Some councils waive for CDC pathway.
Bundled compliance saves significant cost
Sourcing each step independently typically costs $4,000–$8,000+. Our Tier 4 Compliance Pack bundles RPEQ structural cert, NatHERS report, private certifier engagement, and council lodgement at a fixed managed rate with a single point of contact. View Certification Tiers →
Importer Compliance
Certification Framework
Transforming overseas modular units into NCC 2022 Class 1a certified assets. We handle AS/NZS mapping, structural sign-off, NatHERS reports, and council lodgement so your clients can secure finance and approvals.