Commercial Energy Compliance
Clear guidance on the commercial building energy-efficiency requirements contained within Section J of the National Construction Code.
For architects, developers, builders and consultants seeking to understand when Section J applies, what it covers and how Deemed-to-Satisfy and JV3 sit within the broader compliance framework.
Send Your Plans for ReviewIn Brief
Section J is the part of NCC Volume One that sets energy-efficiency requirements for many commercial, industrial and other non-residential buildings in Australia.
It commonly applies to Class 3 to 9 buildings and may need to be addressed during development approval, construction certification or detailed design. The applicable requirements depend on the building classification, project scope, jurisdiction and edition of the National Construction Code adopted for the project.
A Section J Report documents how the proposed design responds to those requirements. Depending on the project, the assessment may consider building fabric, glazing, insulation, sealing, lighting, air-conditioning, ventilation, hot-water systems, energy monitoring and other relevant building services.
Compliance may be demonstrated by following the prescribed Deemed-to-Satisfy provisions or through a Performance Solution. JV3 modelling is one Verification Method that may support a Performance Solution where a comparative whole-building assessment is appropriate.
It commonly applies to new work involving Class 3 to 9 buildings, although the precise obligations depend on the building classification, approval pathway and applicable NCC provisions.
The framework addresses the energy performance of the building envelope and relevant services, with the exact assessment scope determined by the project design.
Projects may follow the Deemed-to-Satisfy provisions or use a Performance Solution. Read the DTS and JV3 comparison for a fuller pathway overview.
Knowledge Navigation
Use this knowledge hub to understand where Section J sits within the National Construction Code, when it may apply, which NCC edition governs the project, what the framework covers and how compliance may be demonstrated.
Start with what Section J is, where it sits within NCC Volume One and how it establishes energy-efficiency requirements for relevant buildings.
Understand how building classification, project scope, proposed work and the approval process influence whether Section J needs to be addressed.
Understand why the applicable NCC edition, state or territory adoption arrangements and project approval timing should be confirmed before assessment.
Review the building envelope, glazing, sealing, lighting, air-conditioning, ventilation and other services that may form part of the assessment scope.
See how the Deemed-to-Satisfy provisions and Performance Solutions sit within Section J, and where JV3 modelling may support an alternative pathway.
Review the architectural drawings, construction details, schedules and services information commonly needed to define the Section J assessment scope.
Section J Explained
Section J is the part of NCC Volume One that establishes energy-efficiency requirements for many commercial, industrial and other non-residential buildings in Australia.
It is an overarching compliance framework rather than a single report or calculation method. The provisions can influence the performance of the building envelope and relevant services, including insulation, glazing, sealing, air-conditioning, ventilation, lighting, hot-water systems, energy monitoring and other project-specific systems.
The requirements that apply to a project depend on factors such as the building classification, climate zone, proposed scope of work, jurisdiction, applicable NCC edition and the compliance pathway being used. This means two buildings with similar uses may still require different assessment scopes or documentation.
A Section J Report is the project-specific document used to record how the proposed design addresses the relevant provisions. It may support approval, certification, construction documentation or coordination between the architect, builder, services consultants and certifier.
Section J should therefore be considered as both a regulatory framework and an early design input. Reviewing it before the façade, construction systems and building services are fixed can reduce redesign and help the project team identify whether the prescribed provisions are workable or whether a Performance Solution may need to be considered.
Section J establishes the commercial building energy-efficiency provisions that relevant projects must address under NCC Volume One.
A Section J Report records how a particular building design responds to the provisions relevant to its classification, location and scope.
Projects may follow the Deemed-to-Satisfy provisions or use a Performance Solution. Where comparative modelling is appropriate, JV3 may be considered.
Project Requirements
Section J commonly needs to be addressed for new work involving Class 3 to 9 buildings under NCC Volume One. This includes many commercial, industrial, institutional, accommodation and mixed-use projects, as well as certain common areas and services associated with Class 2 buildings.
Whether a formal Section J Report is requested depends on the building classification, proposed work, approval pathway, jurisdiction, applicable NCC edition and the documentation requirements of the certifier or relevant authority. The report is commonly used to show how the design addresses the energy-efficiency provisions relevant to the project.
Section J should ideally be reviewed before the building envelope, glazing systems and services strategy are fixed. Early assessment can identify which provisions apply, whether the proposed design can follow the Deemed-to-Satisfy pathway and whether a Performance Solution may need to be considered.
New Class 3 to 9 buildings commonly need to address the applicable Section J provisions as part of design development, approval and construction documentation.
Section J may apply where an existing building is extended or altered, particularly when the building envelope, conditioned areas or relevant services form part of the proposed work.
Commercial fit-outs and refurbishments may trigger particular energy-efficiency provisions where lighting, air-conditioning, ventilation, sealing or other relevant systems are being introduced or changed.
A change in building use or classification can alter the applicable NCC obligations and may require the energy-efficiency scope to be reviewed as part of the approval process.
Early review is particularly valuable where the project includes extensive glazing, a complex façade, mixed classifications, non-standard construction systems or building services that are still being coordinated. These conditions can affect both the assessment scope and the practical compliance pathway.
For project-specific assessment, documentation requirements and submission support, visit the Section J Report service page.
NCC Edition and Jurisdiction
The National Construction Code provides a national technical framework, but it is adopted and applied through the laws and administrative arrangements of each Australian state and territory. The applicable Section J requirements can therefore depend on more than the publication date of the latest NCC edition.
Project location, approval timing, transitional provisions and jurisdiction-specific variations may all affect which edition and clauses need to be addressed. During periods of regulatory change, different projects may legitimately be assessed under different NCC editions, even when their design and documentation stages overlap.
The applicable edition should be established before the final Section J assessment is prepared. This helps ensure that the report refers to the correct Performance Requirements, Deemed-to-Satisfy provisions, Verification Methods and state or territory variations.
Project Location
NCC editions are not always adopted on the same date throughout Australia. The project jurisdiction should be checked rather than assuming the newest national edition automatically applies.
Approval Timing
The applicable code may be influenced by when an approval, building permit, construction certificate or other prescribed project milestone occurs under the relevant jurisdictional rules.
Transition Arrangements
When a new NCC edition is introduced, transitional arrangements may preserve earlier requirements for certain projects or delay the commencement of particular provisions.
Local Requirements
State and territory variations can amend, replace or supplement parts of the national provisions. Relevant local legislation and approval requirements should be considered alongside the NCC text.
Project address and jurisdiction
Building classification and use
Relevant approval or certification stage
Applicable NCC edition
Transitional provisions, where relevant
Jurisdictional variations or additions
The appointed certifier, building surveyor or relevant authority should confirm the formal approval basis for the project. The Section J assessment can then be aligned with the correct code edition, climate zone and jurisdictional requirements.
NCC 2025
NCC 2025 introduces a significant update to commercial building energy efficiency. For projects where the new edition has been adopted and applies, Section J places greater emphasis on reducing operational energy use, strengthening the performance of building envelopes and services, and preparing buildings for a lower-emissions energy system.
The changes extend across parts of the Deemed-to-Satisfy provisions, Performance Requirements and Verification Methods. This makes early confirmation of the applicable NCC edition, assessment scope and compliance pathway particularly important.
Building Performance
Updated requirements affect areas such as insulation, glazing, building sealing, air-conditioning, ventilation, fans, pumps and other regulated building services.
Renewable Energy
The Deemed-to-Satisfy provisions introduce requirements for on-site solar PV. The required system capacity depends on the applicable provisions, building characteristics, climate zone and available roof conditions.
Future Readiness
Where gas-powered building services are retained, projects may need to provide electrical capacity, plant space and related infrastructure so equipment can be replaced with electric alternatives in the future.
Design Coordination
Roof planning, façade performance, services selection, lighting controls and renewable-energy infrastructure increasingly need to be coordinated before the design and documentation are fixed.
NCC 2025 should not be treated as a simple update to report wording. The new provisions can affect roof allocation, façade and glazing decisions, construction specifications, services infrastructure and the evidence needed to demonstrate compliance.
The commercial energy-efficiency changes are principally directed at Class 3 and Class 5 to 9 buildings. Class 2 common areas are not subject to the same NCC 2025 stringency uplift and should be assessed against the provisions applicable to that building work.
Because adoption and transition arrangements differ across Australia, project teams should first confirm which NCC edition applies. The detailed impact can then be reviewed against the proposed design and the selected Section J compliance pathway.
Assessment Scope
Section J addresses the energy efficiency of the building envelope and relevant building services. It is not limited to one calculation, product or construction element. Instead, the applicable provisions consider how different parts of the design contribute to the energy performance of the completed building.
Not every Section J Report assesses every item below. The required scope depends on the building classification, climate zone, proposed work, project documentation, applicable NCC edition and the compliance pathway adopted for the project.
Roofs, walls, floors, insulation and construction build-ups may need to satisfy thermal-performance provisions appropriate to the building, climate zone and construction system.
Window and curtain-wall systems, glazing area, orientation, shading, thermal transmittance and solar heat gain can influence the envelope compliance strategy.
Openings, doors, windows, exhaust systems and other parts of the envelope may require sealing measures to limit unintended air leakage from conditioned spaces.
Mechanical ventilation, air-conditioning equipment, controls, ductwork and related systems may need to be coordinated with the applicable energy-efficiency provisions.
Lighting power, illumination power density, switching and control provisions may form part of the assessment. Where the confirmed scope is limited to lighting, a focused Section J Express Lighting Assessment may be appropriate.
Heated-water systems, energy monitoring, renewable energy provisions and other relevant infrastructure may need to be addressed where required by the applicable NCC provisions.
These areas should not be considered in isolation. Building orientation, façade design, glazing proportions, shading, material performance and services strategy can interact, particularly where the prescribed provisions create design constraints.
Where the Deemed-to-Satisfy provisions are not suitable for the proposed design, a Performance Solution may be considered. JV3 modelling provides one way of assessing whole-building performance through comparison with a reference building, while the broader pathway decision should remain specific to the project.
Compliance Pathways
Section J is the overarching NCC energy-efficiency framework. A project may demonstrate compliance by following the Deemed-to-Satisfy provisions or by developing a Performance Solution that satisfies the relevant Performance Requirements.
JV3 is one Verification Method that may be used to support a Performance Solution. It is not a separate alternative to Section J itself; it is a modelling-based pathway that sits within the broader Section J compliance framework.
The DTS pathway follows the prescribed NCC provisions for the building envelope and relevant services. It may be suitable where the proposed design can satisfy those provisions directly.
JV3 uses comparative modelling to assess the proposed building against a reference building. It may provide greater design flexibility where a prescriptive response is difficult or unsuitable.
Other assessment methods may be used where an appropriately documented Performance Solution demonstrates that the relevant NCC Performance Requirements are achieved.
The suitable pathway depends on the project design, building classification, climate zone, façade strategy, services information and approval requirements. A pathway should not be selected solely because one method appears more flexible or familiar.
For a detailed comparison of design flexibility, documentation and project suitability, read Section J DTS vs JV3. For a deeper explanation of comparative modelling, reference buildings and assessment inputs, visit the JV3 Knowledge Hub.
Focused Section J Scope
Some commercial fit-outs, alterations and separately documented lighting packages may have a confirmed assessment scope limited to artificial lighting power and the applicable lighting-control provisions.
This is a narrower service than a complete Section J Report. Suitability depends on the proposed works, available documentation and confirmation that the building envelope, air-conditioning, ventilation and other relevant Section J provisions are either outside the project scope or being addressed separately.
The review may address illumination power density, connected lighting loads, switching and other applicable control provisions.
Lighting plans, luminaire schedules, project notes and relevant certifier requirements should be reviewed before the focused pathway is confirmed.
A lighting-only assessment does not replace a complete Section J assessment where fabric, glazing, sealing, HVAC or other energy-efficiency provisions also apply.
For eligibility criteria, required documents and the focused assessment process, visit the dedicated lighting service page.
Explore Section J Express Lighting
Assessment Scope
Section J assessments vary considerably between projects. A small, clearly documented commercial fit-out may involve a focused review, while a larger mixed-use development can require coordination across multiple building classifications, façade systems, conditioned areas and building services.
The applicable NCC edition and compliance pathway also influence the assessment. A project responding directly to the Deemed-to-Satisfy provisions will generally require a different level of analysis from a project using JV3 modelling or another Performance Solution.
Building Context
The number of classifications, storeys, conditioned zones, tenancies and distinct building uses can affect which provisions and areas need to be assessed.
Envelope Design
Extensive glazing, multiple façade types, unusual shading conditions and non-standard construction systems can require additional analysis and coordination.
Building Services
Mechanical, ventilation, lighting, heated-water, metering and renewable-energy information may need to be coordinated with the architectural response.
Documentation
Coordinated drawings, schedules and specifications make the assessment clearer. Incomplete or inconsistent information may require assumptions, clarification or later review.
An early review can identify missing documentation, potential conflicts between the architecture and services strategy, and whether the proposed design is likely to suit the intended compliance pathway.
Once the available plans and project information have been reviewed, the assessment scope and required next steps can be confirmed through the Section J Report service.
Project Documentation
A Section J assessment relies on coordinated information about the building envelope, glazing, construction systems and relevant building services. The precise documents required depend on the building classification, proposed work, documentation stage, applicable NCC edition and compliance pathway.
Preliminary drawings may be sufficient for an early scope review. More detailed schedules, specifications and services information are normally required before the final compliance documentation can be completed.
Building Design
Floor and roof plans
Elevations and sections
Building orientation and site context
Shading, roof plant and external obstructions
Building Envelope
Wall, roof and floor build-ups
Insulation specifications
Glazing and window schedules
Façade, shading and sealing details
Building Services
Mechanical and ventilation information
Lighting plans and luminaire schedules
Heated-water and fuel-system information
Metering, controls and renewable-energy systems
Project Context
Project address and jurisdiction
Building classification and proposed use
Applicable NCC edition, where known
Certifier or authority comments, if available
Where NCC 2025 applies, the assessment may also require clearer information about roof areas available for solar PV, roof-mounted plant and access zones, electrical infrastructure, retained gas-powered services and provisions for future electrification.
Providing this information early helps the architectural, electrical and mechanical documentation remain coordinated as the Section J response develops.
Where the documentation is incomplete, an initial review can still identify the likely assessment scope and missing inputs. Project teams ready to submit plans can visit the Section J Report service page.
Project Delivery
Section J is most effective when it is considered as part of the design and documentation process rather than treated as a final approval check. The assessment can influence façade design, glazing, insulation, sealing and building services, particularly where the prescribed provisions create practical constraints.
The precise sequence varies between projects, but the Section J pathway will generally develop alongside the architectural and services documentation through the following stages.
Stage 01
The building classification, proposed work, climate zone, applicable NCC edition and available drawings are reviewed to establish the likely Section J scope.
Stage 02
The proposed design is considered against the Deemed-to-Satisfy provisions. Where these do not suit the design, a Performance Solution may need to be explored.
Stage 03
Envelope details, glazing, sealing, lighting and services information are coordinated so the design and compliance documentation remain aligned.
Stage 04
The final response records the applicable provisions, nominated construction requirements and other information needed to support approval or certification.
Design changes made after the assessment may affect the compliance outcome. Revisions to glazing, insulation, façade construction, conditioned areas or building services should therefore be checked before the documentation is issued for construction.
For project-specific assessment stages, deliverables and submission support, visit the Section J Report service page.
Frequently Asked Questions
Section J is the part of NCC Volume One that establishes energy-efficiency requirements for many commercial, industrial and other non-residential buildings. It addresses the performance of the building envelope and relevant services, including insulation, glazing, sealing, lighting, air-conditioning, ventilation, heated water and energy-monitoring systems.
A Section J Report is the project-specific document that records how the proposed building design addresses the applicable NCC energy-efficiency provisions. The report may support development approval, construction certification, design coordination or review by the appointed certifier or building surveyor. Project teams seeking an assessment can visit the Section J Report service page.
Section J commonly applies to new work involving Class 3 to 9 buildings and may also affect certain common areas and services associated with Class 2 buildings. Alterations, additions, fit-outs, refurbishments and changes of use may also require review. The precise scope depends on the building classification, proposed work, jurisdiction, applicable NCC edition and approval pathway. See when Section J needs to be addressed.
The applicable provisions may address walls, roofs, floors, insulation, glazing, solar control, building sealing, air-conditioning, ventilation, artificial lighting, heated-water systems, energy monitoring and other relevant infrastructure. Not every project requires every item to be assessed. The scope is determined by the building and proposed work. See the overview of what Section J covers.
The applicable NCC edition depends on the project location, approval timing and adoption arrangements within the relevant state or territory. Transitional provisions and jurisdictional variations may also affect the assessment. The applicable edition should therefore be confirmed before the final Section J response is prepared. See NCC editions and jurisdictional requirements.
The Deemed-to-Satisfy pathway follows the prescribed NCC provisions for relevant building elements and services. JV3 uses comparative modelling to support a Performance Solution and may provide greater flexibility for suitable projects. Both sit within the broader Section J framework; JV3 is not an alternative to Section J itself. Read the full DTS and JV3 comparison.
JV3 is the commonly used industry term for a reference-building Verification Method that may support a Performance Solution. It compares the modelled performance of the proposed building with a reference building based on the applicable Deemed-to-Satisfy provisions. For detailed guidance on reference buildings, modelling inputs and assessment methodology, visit the JV3 Knowledge Hub.
A focused lighting assessment may be appropriate where the proposed works are clearly limited to artificial lighting power and applicable controls, and where other Section J provisions are outside the project scope or being addressed separately. It does not replace a complete Section J Report where fabric, glazing, sealing, HVAC or other energy-efficiency provisions also apply. See the Section J Express Lighting service.
Timing depends on the building scale, classification, façade complexity, services scope, documentation quality, compliance pathway and number of design revisions. A coordinated DTS project may progress more efficiently than a complex mixed-use building, incomplete design package or modelling-based Performance Solution.
The assessment commonly requires architectural plans, elevations, sections, construction details, insulation specifications, glazing schedules and relevant lighting, mechanical and heated-water information. Project classification, address, applicable NCC edition and certifier comments may also be needed. See the full Section J document overview.
Yes. Preliminary drawings may be sufficient for an early scope or pathway review. This can help identify missing information and potential design constraints while practical options remain available. Construction systems, product performance, glazing and services information should be confirmed before final compliance documentation is issued.
Yes. Early review can identify issues involving glazing, façade design, insulation, construction systems, conditioned areas and building services before documentation is fixed. It can also help establish whether the prescribed provisions are workable or whether a Performance Solution may need to be explored. See how Section J fits into the project process.
Changes to glazing, façade construction, insulation, conditioned floor area, lighting, mechanical services or nominated products may affect the compliance response. Relevant revisions and substitutions should be provided to the assessor before approval, procurement or construction so the report can be checked and updated where necessary.
Certified Energy can review the available plans and project information to identify the likely assessment scope, documentation requirements and whether a DTS, JV3 or other Performance Solution pathway may need to be considered. Formal approval requirements should also be confirmed with the appointed certifier, building surveyor or relevant authority.
Related Knowledge
Explore the specialist pathways and adjacent commercial compliance topics that sit around the broader Section J framework.
Performance Modelling
Understand reference-building modelling, proposed and reference building comparisons, assessment inputs and how JV3 may support a Performance Solution.
Explore JV3 guidance →
Pathway Comparison
Compare the prescribed Deemed-to-Satisfy pathway with JV3 modelling, including design flexibility, documentation and project suitability.
Compare the pathways →
Focused Assessment
Review the eligibility, documentation and assessment scope for commercial projects limited to artificial lighting power and applicable controls.
Explore lighting-only assessments →
Commercial Gateway
Explore the wider commercial compliance ecosystem, including Section J, JV3 and other building-performance assessment services.
Visit the commercial gateway →
Project Review
Send the available architectural plans, elevations, sections, glazing information, construction details and approval requirements for an initial project review. Certified Energy can help identify the likely Section J assessment scope and documentation requirements.
Early review can help determine whether the proposed design is likely to follow the Deemed-to-Satisfy provisions, whether a Performance Solution such as JV3 may need to be considered and what information should be coordinated before approval or construction documentation progresses.
Last reviewed: June 2026. This page is maintained by Certified Energy as part of its Commercial Performance Knowledge Hub.
