Short answer
VURB assessments cost more in upfront modelling and documentation than simple DTS compliance, but deliver benefits in design flexibility, possible cost savings in materials or system choice, improved energy performance and regulatory certainty. Trade‑offs include dependence on accurate modelling, possible revisions, and the need for early design alignment.
Full answer
The cost of a VURB assessment varies significantly depending on the size and complexity of the building, the completeness of the documentation and the presence of non-standard design elements. Residential projects typically fall at the lower end of the pricing spectrum, while commercial or complex builds are more costly. Example pricing ranges are outlined in Certified Energy’s blog. The benefits of VURB include greater design flexibility, potential cost savings by avoiding the need to over-specify components, improved energy performance and lower energy bills. It can also lead to faster or more predictable approvals when working with an experienced and reputable assessor, along with improved occupant comfort and reduced greenhouse gas emissions. However, there are trade-offs to consider. VURB requires upfront investment in modelling and time, and if the design fails to meet the performance of the reference building, redesigns or compromises may be needed. The accuracy of results depends heavily on reliable data and assumptions, such as glazing specifications, orientation and shading. Incomplete or incorrect information can lead to delays or additional modelling iterations. There is also a higher documentation burden compared to simpler compliance pathways.
Why this matters
Understanding the cost of a VURB assessment helps you budget accurately and estimate your total project costs more effectively. It ensures you can evaluate whether the benefits—such as improved energy performance, design flexibility and potential approval efficiencies—justify the investment for your specific project. This knowledge also supports informed decision-making about design elements, materials and building systems, helping you strike the right balance between upfront cost and long-term performance outcomes.
How Certified Energy can help
At Certified Energy, we provide fixed quotes so you know upfront exactly what you’ll pay for a VURB assessment. We assess the benefit versus cost trade-offs and help you understand the potential savings in energy bills or operational costs over time. By ensuring your documentation is complete and all modelling assumptions are clearly defined from the beginning, we help reduce the risk of delays or unexpected revisions. If design changes are needed to achieve compliance, we work closely with your design team to guide the process efficiently and minimise disruption.
Related regulations
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NCC Section J methods, particularly reference building / JV3 compliance clauses.
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Local council/ certification bodies may require cultural, state specific, or climate zone specific compliance.
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National and state requirements for energy efficiency in built‑environment (standards referenced in NCC).
Helpful resources
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