Short answer
A JV3 Report is an alternative assessment method under Section J of the National Construction Code (NCC) for non‑residential buildings. It is required when a building’s design cannot satisfy the prescriptive “Deemed‑to‑Satisfy” (DtS) requirements and instead must meet energy efficiency via a performance‑based approach.
Full answer
JV3 (also known as the verification or performance solution under Section J) allows developers, architects and engineers to model a proposed building’s annual energy use—taking into account its location, climate, glazing, orientation, walls, roof, lighting, HVAC, occupancy and more—and compare that against a reference building built to DtS standards. If the proposed building uses no more energy than the reference building, then it complies under JV3. It offers flexibility in selecting materials, glazing, insulation, and services that might not comply under the stricter DtS rules.
JV3 is required when the DtS method is either not achievable or too limiting for your design. For example, if you want expansive glazing, or unusual facade designs, or particular aesthetic or daylighting wants, JV3 may be the path you need.
Why this matters
JV3 offers greater design flexibility by allowing the use of more creative or non‑standard materials and architectural features that would typically be restricted under the Deemed‑to‑Satisfy (DtS) pathway. This flexibility enables architects and developers to achieve their design intent without being limited by prescriptive code requirements. In addition, JV3 can result in potential cost savings by optimising trade‑offs between building elements—such as improving insulation or adjusting glazing specifications—reducing the need for over‑engineering and lowering both construction and long‑term operational costs. It also provides compliance certainty, ensuring that even with unconventional design choices, the building will still meet the energy efficiency requirements of the National Construction Code (NCC). Ultimately, this performance‑based approach leads to better energy outcomes, with lower energy consumption, reduced greenhouse gas emissions and improved thermal comfort for occupants.
How Certified Energy can help
At Certified Energy, we provide expert guidance to help you determine whether a JV3 assessment is the most suitable compliance pathway for your project. Our team conducts detailed modelling of both the reference building and your proposed design using accurate 3D thermal simulation tools to ensure reliable results. We work closely with you to identify opportunities where design adjustments—such as improved insulation, optimised glazing or more efficient services—can offset energy loads and bring the building into compliance with the JV3 benchmark. From start to finish, we prepare the complete JV3 Report, liaise with the relevant certifiers and approving authorities, and support your design team throughout the entire process to ensure a smooth and successful outcome.
Related regulations
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National Construction Code (NCC) Volume 1, Section J – Deemed‑to‑Satisfy and Performance Requirements.
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Specification JV (of Section J) which outlines how the reference and proposed buildings must be modelled.
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Other verification methods permitted under NCC for non‑residential buildings.
Helpful resources
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