What Is a Section J Report?
A Section J report is a mandatory energy efficiency assessment required for all commercial buildings, public buildings, and multi-residential common areas under the National Construction Code (NCC) Volume One. Section J of the NCC sets out the minimum energy efficiency requirements that commercial buildings must meet before construction approval can be granted.
The report evaluates key building elements including the thermal performance of the building envelope (walls, roof, glazing, and floors), air-conditioning and ventilation systems, artificial lighting and power, hot water supply, and access for building maintenance. Each element must demonstrate compliance with the NCC energy efficiency provisions to receive building approval.
Through our referral service, we connect you with accredited energy consultants who have extensive experience preparing Section J reports for a wide range of commercial projects including office buildings, retail centres, warehouses, hospitals, schools, and mixed-use developments.
Who Needs a Section J Report?
Any new commercial building, significant renovation, or change of use that falls under NCC Volume One requires a Section J assessment. This includes:
- New office buildings, retail spaces, and shopping centres
- Warehouses, factories, and industrial facilities
- Hotels, hospitals, aged care, and educational facilities
- Mixed-use developments with commercial components
- Major refurbishments and fitouts exceeding compliance thresholds
- Common areas of multi-residential buildings (Class 2 sole-occupancy units are assessed under NatHERS)
Building surveyors and certifiers will not issue a building permit without evidence of Section J compliance. Getting your Section J report prepared early in the design process helps avoid costly redesign work later.
DTS vs Verification Method
There are two pathways to demonstrate Section J compliance under the NCC: the Deemed-to-Satisfy (DTS) provisions and the Verification Method (also known as JV3 assessment).
The DTS pathway requires each building element to individually meet the prescribed minimum performance levels. This is a prescriptive, element-by-element approach where walls must meet specific R-values, glazing must meet U-value and SHGC limits, and lighting power density must fall within defined thresholds. DTS compliance is generally simpler and faster but can be more restrictive in terms of design flexibility.
The Verification Method (JV3) uses computer simulation to model the whole building's energy consumption and compare it against a reference building that just meets DTS requirements. If the proposed building uses less energy than the reference building, it passes. This pathway allows greater design flexibility and can result in cost savings where individual elements may not meet DTS requirements but the overall building performs better. Learn more about the JV3 assessment process.
How Much Does a Section J Report Cost?
Section J report costs typically range from $2,000 to $8,000 or more, depending on the size and complexity of the building. Key factors that influence pricing include:
- Building floor area and number of storeys
- Complexity of the facade and glazing systems
- Type of HVAC and mechanical systems
- Whether DTS or JV3 verification method is used
- Location and climate zone
- Urgency and turnaround requirements
For a detailed breakdown of pricing factors, see our Section J report cost guide. You can also use our Section J cost estimator to get an instant estimate based on your project details.
Turnaround Time
Most Section J reports are completed within 5 to 15 business days from receipt of complete documentation. The timeline depends on the project complexity, the quality of drawings provided, and the consultant's current workload. Expedited turnaround is available through many of our network consultants for an additional fee.
To ensure the fastest turnaround, provide your consultant with complete architectural drawings, mechanical services specifications, lighting layouts, and any relevant engineering reports at the time of engagement.
NCC 2022 Changes to Section J
The NCC 2022 update introduced significant changes to Section J energy efficiency requirements. These changes raised the performance bar for commercial buildings, with stricter insulation requirements, tighter glazing performance limits, and new provisions for renewable energy and electric vehicle charging. The accredited consultants in our network stay current with all NCC amendments and can advise on the most cost-effective compliance pathway for your project. Read our guide to NCC 2022 changes for more detail.
Get Connected with an Accredited Section J Consultant
Finding the right consultant for your Section J report should not be a guessing game. We connect you with accredited energy assessors who have proven experience with commercial projects in your area. Fill in the form to receive obligation-free quotes, or use our consultant finder tool to search by location and service type.