from idea to realization
Section J Consultant for Commercial Buildings
Achieve a clear, practical pathway to National Construction Code energy efficiency compliance.
Sustainaspace provides Section J consulting, Deemed-to-Satisfy assessments and JV3 performance modelling for commercial building projects across Australia.
We work with architects, building designers, developers, builders and other consultants to identify compliance requirements, resolve design issues and prepare clear supporting documentation.
Section J Energy Efficiency Consulting
Section J contains the energy efficiency provisions relevant to many commercial buildings under the National Construction Code.
Depending on the building classification, design and proposed compliance pathway, the assessment may consider:
- Building fabric
- Roof, wall and floor insulation
- Glazing and façade performance
- Building sealing
- Air-conditioning and ventilation systems
- Artificial lighting and power
- Heated water systems
- Energy monitoring requirements
- Renewable energy or on-site energy resources where applicable
A Section J consultant reviews the design against the relevant requirements and prepares documentation that supports the building approval process.
Section J Deemed-to-Satisfy Reports
The Deemed-to-Satisfy pathway assesses individual building elements against prescriptive NCC provisions.
This approach can be effective for relatively straightforward projects where the building envelope and services can meet the specified requirements without extensive design changes.
Our Section J service may include:
- Review of architectural and consultant documentation
- Building fabric assessment
- Glazing calculations
- Insulation requirements
- Review of lighting and relevant building services
- Identification of non-compliant elements
- Practical recommendations
- Preparation of a Section J compliance report
We communicate required changes clearly so that they can be incorporated into the drawings and specifications.
JV3 Performance-Based Assessments
JV3—referred to as J1V3 under current NCC terminology—is a performance-based pathway that uses computer modelling to compare the proposed building with a compliant reference building.
This pathway may be appropriate when a project cannot efficiently satisfy every prescriptive provision or when the design team requires greater flexibility.
JV3 modelling can allow performance improvements in one part of the design to compensate for limitations elsewhere. Depending on the project, this may help retain important glazing, façade, material or architectural design decisions.
A JV3 assessment is not automatically the best option for every building. We review the project and advise whether a Deemed-to-Satisfy report or performance-based assessment is likely to provide the more appropriate pathway.
Projects We Can Assist With
Our Section J consultants can support a range of commercial and non-residential projects, including:
- Offices
- Retail premises
- Medical and consulting facilities
- Restaurants and cafés
- Warehouses
- Industrial buildings
- Educational facilities
- Childcare centres
- Accommodation buildings
- Mixed-use developments
- Commercial alterations and additions
- Building upgrades and refurbishments
The exact requirements depend on the building classification, climate zone, design and scope of work.
Our Section J Consulting Process
Simple, transparent and easy to follow
Project and Documentation Review
We review the architectural drawings, specifications and available services information to determine the project requirements.
Compliance Pathway Advice
We identify whether a Deemed-to-Satisfy assessment or JV3 performance solution is likely to be appropriate.
Assessment and Coordination
We assess the building envelope and relevant systems, identify compliance issues and communicate the necessary changes to the project team.
Report Preparation
Once the required information and design revisions are confirmed, we prepare the relevant compliance report and supporting documentation.
Ongoing Project Support
Where the design changes, we can review revisions and advise on their implications for the energy assessment.
Why Work With Sustainaspace?
Practical Compliance Advice
Our recommendations consider buildability, project cost and architectural intent—not compliance in isolation.
Section J and JV3 Capability
We can assess both prescriptive and performance-based options and help identify a suitable pathway.
Clear Project Coordination
We work with the wider consultant team to resolve missing information and design conflicts before they delay approvals.
Commercial and Design Experience
Sustainaspace brings more than 20 years of building and design industry experience to its assessment services.
Australia-Wide Support
We service suitable commercial projects throughout Australia from our Perth and Sydney locations.
Frequently Asked Questions
A Section J assessment is commonly required to demonstrate energy efficiency compliance for new commercial buildings and certain commercial alterations or additions. The specific requirements depend on the building classification and proposed work.
A Section J Deemed-to-Satisfy assessment checks the design against prescriptive provisions. JV3 uses whole-building simulation to demonstrate that the proposed design performs at least as well as a compliant reference building.
That depends on the building. Deemed-to-Satisfy reporting is often simpler, while JV3 modelling can potentially avoid costly or impractical changes on more complex designs.
We commonly require architectural plans, elevations, sections, window schedules, material specifications and relevant mechanical, electrical or lighting information.
Yes. Early review is recommended because it gives the design team more options for resolving compliance issues.
A clear next step for your project
Request a Section J or JV3 Assessment
Send us your plans and available specifications. We will review the project, identify the likely assessment pathway and provide a quotation.