NCC Section J compliance reporting for commercial and non-residential buildings.
The provisions that govern the energy efficiency of commercial and non-residential buildings differ from stand alone dwellings and apartments. The Section J deemed to satisfy pathway assesses the building envelope, including glazing, sealing, lighting and air conditioning to ensure compliance is met under the 2025 NCC.
Most projects reach us at the point where a building surveyor has asked for a Section J report. The value in engaging earlier is that the envelope and glazing decisions driving the result are still open. Once the facade is documented and priced, the remaining routes to compliance are usually the expensive ones.
Where a Deemed-to-Satisfy outcome cannot be reached economically, a JV3 verification or a Performance Solution may be the better route. We will tell you which applies before the fee is set.
Energy efficiency compliance for Class 2 to Class 9 buildings under NCC 2025 Volume One Section J, assessed via the Deemed-to-Satisfy provisions, including a Section J compliance report suitable for submission to your building surveyor or the relevant authority.
Assessment covers J4 building fabric, J5 building sealing, J6 air conditioning and ventilation, J7 artificial lighting and power, J8 heated water supply and swimming pool plant, and J9 energy monitoring, as applicable to the class and size of the building.
Required by architects, developers and builders of commercial, retail, industrial, health, education and Class 2 residential buildings at building permit stage.
Stage 1 — Project Initiation. Studio Bun reviews your drawings, specifications and brief, identifies the NCC 2025 requirements that apply to the project, and issues a proposed compliance pathway together with a fixed fee covering the full process.
Stage 2 — Preliminary Assessment & Design Advice. The proposed design is assessed against the Section J provisions. We issue a Preliminary Assessment Report setting out what is required for compliance. This stage identifies the key challenges to the project and the improvements available, whether to exceed compliance or to reduce the cost of meeting it.
Stage 3 — Design Iteration & Optimisation. Between the preliminary and final reports we allow two rounds of minor changes to the design, and a meeting to review the recommendations. From here we can focus on cost efficiency or on performance, as the project requires.
Stage 4 — Final Reporting. Once the final specification and design are documented, we confirm each provision is satisfied and issue the final Section J compliance report for your building surveyor, alongside a stamped set of drawings. Changes after the final report is issued are charged at an additional rate, depending on the size and scope of the change.
Review of architectural, mechanical, electrical and hydraulic documentation as required
Assessment of the building envelope against the Section J deemed to satisfy pathway
Glazing calculations for each facade and orientation
A preliminary report identifying compliance gaps and the options to close them
Two rounds of minor changes between preliminary report and finalisation
Specification schedules for insulation, glazing and sealing
A final Section J compliance report for submission
A few items sit outside this scope and can be quoted separately:
Class 1 and Class 10 residential buildings (see the NatHERS and Elemental Provisions services)
JV3 verification modelling
Performance Solutions and expert witness reports
NABERS commitment agreements or Green Star documentation
Mechanical, electrical or hydraulic design
Fire engineering, acoustic or daylight assessments
Minor design changes beyond two rounds
Stormwater management (available as its own service)
This service assumes a Class 2 to Class 9 building in Victoria under NCC 2025, with architectural and services documentation sufficiently complete for assessment.
Studio Bun offers fixed sum packages for Section J assessments, priced on the class, size and servicing complexity of the building.
Contact us for a quote.
What is a Section J report?
It's the document that demonstrates a commercial or non-residential building meets the energy efficiency requirements of NCC 2025 Volume One (Section J). Building surveyors and councils require it for the building permit. It covers the building's fabric, glazing, sealing, air-conditioning and ventilation, lighting and power.
What's the difference between Section J and NatHERS?
They apply to different buildings. NatHERS is for homes (NCC Volume Two, Class 1 dwellings). Section J is for commercial and non-residential buildings (NCC Volume One, Classes 2 to 9). If your project is an apartment building, office, shop, warehouse or similar, Section J is the relevant framework; if it's a house or townhouse, it's NatHERS or the Elemental Provisions.
What's the difference between the Section J DtS pathway and JV3?
DtS is the prescriptive route: meet the specified elemental requirements and you comply. JV3 is a performance route that uses reference-building energy modelling to show your design performs at least as well as a compliant benchmark, which gives more design flexibility (useful for highly glazed buildings) but takes more analysis. We can advise which route suits your building.
Do I need a Section J report for my project?
If you're seeking a building permit for a commercial or non-residential building in Victoria, almost certainly yes. Section J compliance is a standard permit requirement. Send us the building class and drawings and we will confirm.
When should I engage a Section J consultant?
Early. Envelope, glazing and services decisions all affect Section J, and they're expensive to change late. Getting the requirements on the table during design development avoids costly rework near permit stage.
Send through your drawings and building details for a fixed-fee quote.
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