Rolleston Fields is positioned just 20 minutes from Christchurch and has established itself as the South Island’s fastest growing sustainable hub, bringing food and beverage outlets, specialty retail, a health and wellbeing precinct and a public library together in a development surrounded by open recreation space, play areas and a skate park. It is exactly the kind of mixed-use, community-focused development that the Selwyn District needs as its population continues to grow — and delivering it to a sustainable standard meant demonstrating compliance with the New Zealand Building Code’s H1 Energy Efficiency requirements across multiple buildings. Dewick & Associates was engaged by the project contracting team to produce the H1 Energy Efficiency Reports for Buildings A, B, D and I, demonstrating compliance with the code requirements for each building across the development.
Our focus was on working through the H1 calculations and compliance methodology for each building accurately, giving the project team the documentation they needed to satisfy the Building Code requirement and progress the development.
By Alexandra Vuksa
Credit: The image has been generated by AI and depicts a conceptual shopping outlet area. It is not the actual location.
Region
Client
Completion Date
Project Value
The project contracting team at Rolleston Fields was delivering a multi-building sustainable hub across a development that targeted strong environmental performance from the outset. The New Zealand Building Code’s H1 Energy Efficiency clause sets minimum requirements for the thermal envelope and energy performance of new buildings, and demonstrating compliance requires a structured calculation and reporting process that sits outside the core construction scope for most contractors.
With four separate buildings at Rolleston Fields requiring H1 Reports, each with its own building form, orientation and specifications, the Mechanical Contractor Beattie Air Conditioning needed a partner who understood the H1 compliance methodology and could move through the reports efficiently without placing additional burden on the contractor’s own team. They engaged Dewick & Associates to provide the H1 Energy Efficiency Reports.
Preparing H1 Energy Efficiency Reports for a mixed-use development requires each building to be assessed individually against the requirements of Clause H1 of the New Zealand Building Code. At Rolleston Fields, Buildings A, B, D and I included retail, community and library spaces, each with different building layouts, occupancy types and thermal performance requirements.
To support the Building Consent application, the energy efficiency calculations needed to accurately reflect the construction, glazing, insulation and building services for each building. The reports also had to present the compliance evidence in a clear, consistent format that enabled Building Consent Authorities to efficiently review and verify compliance with the H1 requirements.
Dewick & Associates prepared individual H1 Energy Efficiency Reports for Buildings A, B, D and I, assessing each building against the requirements of the New Zealand Building Code. Our engineers reviewed the construction details, glazing, insulation and building design to complete the required energy efficiency calculations and produce clear, project-specific compliance reports.
Each report was prepared in a format suitable for Building Consent submission, providing the evidence needed to demonstrate H1 compliance. By managing the assessment and documentation from start to finish, we enabled the project team to keep the consent process moving while remaining focused on delivering the construction programme.
Dewick & Associates successfully delivered H1 Energy Efficiency Reports for all four buildings at Rolleston Fields, providing the documentation required to support the Building Consent process and demonstrate compliance with the New Zealand Building Code. The reports gave the project team confidence that each building had met the required energy efficiency standards, helping avoid delays during the approval process.
As part of one of the South Island’s largest mixed-use developments, the completed reports contributed to the successful delivery of a modern retail and community hub designed with long-term energy performance in mind. The result was a streamlined compliance process and a coordinated set of reports that supported the project’s successful completion
The content in this case study has been informed by project documentation and client communication provided to Dewick & Associates during and following the completion of the project. Where external sources have contributed to our understanding of relevant standards or industry practice, these are listed below.
The image has been generated by AI and depicts a conceptual shopping outlet area. It is not the actual location
Note: Some content in this case study draws on a combination of sources rather than direct quotation. Where this is the case, contributing sources are acknowledged above rather than cited inline.
Independent assessment of the proposed building design against the energy efficiency requirements of Clause H1 of the New Zealand Building Code, including review of building insulation, glazing performance, thermal envelope construction, shading provisions and building services efficiency to demonstrate compliance and support Building Consent approval.
Undertaken by Dewick & Associates’ in-house Chartered Engineering Team, providing practical compliance advice, design optimisation and consent-ready technical reporting.
Outsource to our expert team so you can stay focused on delivering high-quality on-site construction
