Loading
Compliance & Certification
Engineered to the same standards as a conventional home
Keaton Mills builds are designed against the National Construction Code, ABCB standards and Australian Consumer Law, with certification, warranty and council lodgement included in the standard turnkey package where applicable to the product. The detail of how that works is below.
NCC 2022 Class 1a
Our 30ft and 40ft Class 1a homes are designed to the National Construction Code 2022 Class 1a standard for residential dwellings. Final certification is issued per build by the engaged private certifier.
ABCB compliant
Designed against the Australian Building Codes Board volume-1 and volume-2 requirements for structural, fire, energy efficiency and accessibility.
Form 15 engineering
When the certifier or council requires engineering sign-off, Class 1a builds are reviewed by a registered Australian structural engineer who issues Form 15 (Compliance Certificate for Building Design — Queensland) or the equivalent form in your state, ready for lodgement.
NatHERS rated
A Nationwide House Energy Rating Scheme (NatHERS) assessment is produced for Class 1a builds where required by your local council — included in the turnkey package for those builds.
Private certifier sign-off
Class 1a council lodgement runs through an independent registered private building certifier in your state. Their independence from us is part of the compliance — they aren't our employee.
ACL warranty cover
Backed by the Australian Consumer Law statutory guarantees — acceptable quality, fitness for purpose, and matching description — which apply to every retail purchase.
Australian Standards reference
The codes every Keaton Mills build is engineered against
Tap any standard to see what it governs, the key requirements your build must meet, the specific materials it covers, and a link to the official reference. Click the first row to expand.
Australia’s primary building framework. Sets minimum requirements for safety, health, amenity and energy efficiency across all building classes. Class 1a covers detached residential dwellings; Class 10a covers non-habitable buildings such as site offices and sheds.
Key requirements
- Class 1a habitable dwellings must achieve a minimum 7-star NatHERS rating
- Compliance via Deemed-to-Satisfy or a documented Performance Solution
- ABCB Prefabricated Construction Handbook applies to modular/transportable Class 1a builds
- Energy efficiency, fire safety, structural and accessibility provisions all mandatory
How Keaton Mills meets it
- Whole-of-build certification: structure, envelope, services, finishes
- Engineered against NCC 2022 from concept; lodgement via private certifier
Materials & construction
What goes into every build
Each Keaton Mills home is built to a documented specification. No mystery imports, no grade substitutions without written client approval. Specifications below are the standard build — alternate grades and finishes are available where noted on each product page.
Structure & framing
- Q235 / Q355B cold-formed low-carbon steel chassis
- Q235 ≈ AS/NZS 3678 Grade 250 · Q355B ≈ Grade 350 (RPEQ-certified equivalence)
- RPEQ / CPEng Form 15 issued per build for structural sign-off
- Zinc-rich primer + matte powder-coat finish (standard)
- Thermal-break aluminium folding walls & hinge mechanism
- AS/NZS 1170.1 compliant galvanised sub-frame
- AS 4055 wind classification N3 standard — cyclonic upgrade pack quoted on assessment
Insulation & cladding
- B2-grade (DIN 4102) 50mm EPS wall panels — standard for Class 10a site / office use
- A1 non-combustible Rock Wool 75mm — recommended upgrade for Class 1a habitable
- B1 PU/PIR alternatives available — require CodeMark cert or Performance Solution for Class 1a
- 20mm "Great Wall" composite cladding (standard exterior)
- B2-grade (DIN 4102) 70mm EPS roof insulation, 0.5mm aluminium roof sheet
- PPGI cladding — BAL-12.5 compliant · Pyropanel substitution for BAL-29+
- Optional: woodgrain composite panel, Scyon / Axon fibre cement
Flooring & interiors
- 20mm fire-resistant board substrate
- 2mm anti-slip, wear-resistant vinyl flooring
- PVC grain board (site offices, Class 10a)
- PVC suspended ceilings, LED downlights
- Cornice & skirting to Class 1a residential standard
- AS 3740 wet-area waterproofing: 1.5mm liquid membrane, 75mm upstand, 1:60 fall
Windows & doors
- Thermal-break aluminium sliding windows
- Aluminium IGU 5/9/5mm double-glazed with integrated fly screens
- BAL-12.5 rated with ember-guarded vents (suitable for most non-flame-zone sites)
- 6mm toughened glazing substitution for BAL-19 / BAL-29 zones
- Outward-opening and sliding window options
- Aluminium sliding + lockable entry door (standard)
- Privacy-lock bathroom, solid-core bedroom doors
Kitchen & bathroom
- U-shape modular cabinetry with double sink (standard)
- Wall-mounted overhead cabinets, stone-look bench
- Full bathroom: toilet, vanity, sliding shower partition
- Mirrored cabinet & exhaust fan included
- PEX hot/cold supply lines, PVC drainage
- AS 3500.4 tempering valve — 50°C max at shower & basin outlets
- AS 3740 compliant waterproofing membrane through wet areas
Electrical & plumbing
- 32A distribution board (LITE spec) with Type A RCDs on all final sub-circuits (mandatory April 2023+)
- AS/NZS 3000 RCM-compliant switches, GPOs and accessories throughout
- AS/NZS 3001 transportable-structure rules — chassis bonded to main earth bar
- Factory-supplied wiring re-terminated and tested on-site by licensed AU electrician
- Triple-proof ceiling lights (waterproof, dustproof) in wet areas
- Hardwired interconnected photoelectric smoke alarms (AS 3786)
- AS/NZS 3500 pre-plumbed PEX hot/cold, pressure-tested before dispatch
Warranty cover
What’s actually covered, and for how long
10 years
Structural envelope
- Steel chassis & sub-frame
- Wall and roof framing
- Cladding system integrity (not finish)
- Hinge & expansion mechanism
12 months
Fittings & fixtures
- Plumbing, electrical, gas fittings
- Appliances (per manufacturer warranty)
- Internal cabinetry, hardware, paint
- Glazing & door seals
Detail of the warranty terms, exclusions and the claim process is set out on the Warranty page. Statutory rights under the Australian Consumer Law apply in addition to and do not limit any of the cover described above.
Council lodgement
How approval actually works
Council approval is part of the turnkey package. You don’t lodge anything yourself — we do it, with a registered private certifier, against the pre-engineered build.
- 01
Engineering pack issued
Typically within 5–7 business days of deposit, we issue the engineering pack: floor plan, elevations, electrical layout, structural drawings, Form 15 (or state equivalent), soil report and NatHERS certificate where applicable to your build.
- 02
Private certifier engaged
We engage a registered private building certifier (Queensland) or equivalent in your state to review and lodge. Their independence is part of the compliance — they aren’t employed by us.
- 03
Council lodgement
The certifier lodges the Decision Notice with your local council. Turnaround is typically 15–25 business days but varies significantly by LGA and can be longer in peak season. We track and follow up weekly.
- 04
Approval issued, build kicks off
Once approval lands, the production schedule confirms. Manufacturing runs concurrent to council in most cases, so the approval arrives close to the dispatch date.
Delivery & on-site
Heavy-haulage compliance, every state
Permits & pilot vehicles
Oversize-load permits secured per state. Pilot vehicles arranged for routes that require them. Police escort where mandated.
Site survey on tight access
If access is difficult — steep grade, narrow driveway, unsealed road — we run a survey before commitment and price the crane / setup against actual conditions.
Connection sign-off
Plumbing and electrical connections completed by licensed trades, with a Certificate of Compliance left with the owner at handover.
Talk to us about your site
We’ll send you the engineering pack for the model you’re considering, with the standard compliance documents attached. No commitment, no obligation.