Green Star Technical Clarification Rulings
Technical Clarifications for Green Star represent our answers to Technical Questions submitted by projects, and provide further guidance and reference to others. The list is regularly updated.
There are two types of Technical Clarifications listed in the table below:
General Clarifications
These are extensions to the guidance provided in the Submission Guidelines. They clarify and sometimes supersede the original Credit Criteria or
Compliance Requirements. General Clarifications set precedent for future project teams to follow. Should a project team wish to apply a general clarification to its project, there is no requirement for further Technical Questions to be submitted. NZGBC Assessors will also use them as precedents to assess submissions.
Project Specific Clarifications
These are published as references for other projects but, unlike General Clarifications, they do not set precedent. They often relate to special
situations where multiple prerequisites exist for a particular project and are less likely to reoccur to another project. Therefore, rulings set for Project Specific Clarifications are often conditional and will likely vary for other projects. Each project still needs to submit its own Technical Questions and provides evidence relating to its own building in order to have a similar ruling approved for that specific building.
Should you wish to apply any Technical Clarification for legacy rating tools to your projects, please submit a Technical Question to the NZGBC to
explain why and how it applies. You can download the Technical Question form here
How to most efficiently use this page:
- Filter for the relevant tool version
- If known, use the credit name field to search for credit keywords or corresponding credit number - please note, this field will ONLY search the "Credit Name" field
- Use your CTRL+F to search keywords on the page
Technical Question Title | Clarification Type | Tool Version | Month Released | Credit Name | Sub-credit Name | Amendment/Approved Ruling |
---|---|---|---|---|---|---|
Default Design Occupancy | General | DABv1, DABv1.1 | November 2022 | 0 - General | General |
The use of default Design Occupancy from Green Star Legacy tools is not an acceptable method of calculating Design Occupancy for speculative developments. For speculative developments it is common for the developer / client to provide a Building Performance Specification or similar document which outlines the development’s requirements for the design team. The Design Occupancy referred to in the Building Performance Specification or similar should be used consistently as the basis for calculations for all relevant credits. |
GSAP Alternative Compliance Requirements | General | DABv1 | July 2020 | 1 - Green Star Accredited Professional | Accredited Professional |
The following alternative Compliance Requirements can be used and applied holistically for Credit 1.1 Green Star Accredited Professional: 1. GSAP engagement from Green Star registration, or within one month following (rather than from schematic design); 2. GSAP certificate validity from Green Star registration to construction completion; and 3. GSAP involvement. To demonstrate GSAP involvement there must be at least one GSAP that:
The GSAP involvement tasks outlined above may be carried out by more than one GSAP. The GSAP role can be shared by multiple professionals involved in the project. This is acceptable as long as each GSAP individually meets the requirements above (apart from the workshop requirement) and this role has been fulfilled continually from registration to practical completion. Documentation Requirements - at Design Review, and As Built Stage:
|
Energy Metering Distinct Uses off Demand | General | DABv1 | October 2019 | 6 - Metering and Monitoring | Metering |
Can energy metering of distinct uses be based off electricity demand rather than energy? Yes. In regard to energy meters for Metering Distinct Uses or Floors, NZGBC approves the criteria to be amended to "where the electrical load for a single item exceeds 5% of the total electricity (power) demand for the project, or 100kW, it must be individually metered". This is based on the understanding that the overarching metering strategy for Green Star is to ensure that all significant loads are individually metered. |
Carpet Underlay is Flooring | General | DABv1 | November 2020 | 20 - Responsible Building Materials | Permanent Formwork, Pipes, Flooring, Blinds and Cables |
Carpet underlay should be included as flooring for the purpose of the credit criteria Responsible Materials: Permanent Formwork, Pipes, Flooring, Blinds and Cables" |
Toilet and EOT as Tertiary Spaces | General | DABv1, DABv1.1 | June 2022 | 0 - General | General |
For the Nominated Area, toilets and end-of-trip facilities should be defined as Tertiary spaces. |
Climate Adaptation Plan | General | DABv1 | June 2021 | 3 - Adaptation and Resilience | Adaptation and Resilience |
Climate Adaptation Plan: If an organisation or corporation has a Climate Adaptation Plan process in-house, that process needs to be referenced by the project covered under the organisational Climate Adaptation Plan. The compliance requirements outlined under 3.1.5 Implementation of the Climate Adaptation Plan must be addressed on an individual project level. Risk Assessments: The National Climate Change Risk Assessment (NCCRA) guidelines is recommended for New Zealand project teams to undertake risk assessments to achieve this Green Star credit. The assessment of climate change related impacts needs to be considered for the rated building’s design and construction only. It should not go beyond the boundary of the rated building
|
Exhaust Ventilation for Print Room | General | DABv1 | October 2019 | 9 - Indoor Air Quality | Exhaust or Elimination of Pollutants |
The exhaust ventilation flow rate for a print and/or photocopy room must be at least 5l/s/m2 AND at least 10% greater than the supply rate of air. This ensures the space is negatively pressurised and pollutants do not escape to neighbouring areas. |
Bicycle Spaces | General | DABv1 | October 2019 | 17 - Sustainable Transport | Reduced Car Parking Provision |
For bike parking, staff bicycle spaces do not need to be separate from general public spaces, provided they are secure. Visitor spaces do not need to be under cover. |
ODP Reduction resulted in Decreased Capacity to Demonstrat Improvement | General | DABv1 | July 2021 | 19 - Life Cycle Assessment/Impacts | Life Cycle Assessment |
The NZGBC notes that the stratospheric ozone depletion potential (ODP) of many materials has decreased in response to the Montreal Protocol. As a result, the capacity to demonstrate improvement in this category has substantially decreased, impacting the total points achievable in the Life Cycle Assessment credit. The NZGBC allows project teams to now exclude the ODP impact category from the life cycle assessment. For projects using the Life Cycle Assessment Calculator, the rows for the ODP impact category can be left blank so that it is not included in the calculation of points for the credit. |
Skylights and Atrium Luminaries | General | DABv1 | October 2019 | 26 - Light Pollution | Light Pollution |
Skylights are not considered external for the Light Pollution credit. Where luminaires are mounted within an atrium or skylight, these must be included as an external light source. |