Method 2. 4-6 months. $80,000+ for Data expected Data capture on Limited to those Well supported by NABERS/ research and to be factual ~50 Australian measurement is building types stakeholders but Green Star ~$15,000 for and historically commercial post-build as a covered by may be less valid as Ratings data valid; however, buildings; whole, the NABERS or Green a proxy for purchases (50 the data covering major cost/premium Star ratings tools. costs. Method. * $300) relates to commercial data be more Not an exact voluntary types/classes, reliable, though analogy for Code uptake of across different more averaged changes. higher than Australian than QS mandated jurisdictions with estimates. performance energy patterns NABERS has been requirements, and climate in the market for which is not an zones. longer than a exact analogy decade for future Code – familiarity with changes. stakeholders. Access to NABERS data is expected to be straightforward. May get more buildings through Method 2 than Method 1. for these buildings would
Method 2. NABERS/ Green Star Ratings Method. 4-6 months. $80,000+ for research and ~$15,000 for data purchases (50 * $300) Data expected to be factual and historically valid; however, the data relates to voluntary uptake of higher than mandated performance requirements, which is not an exact analogy for future Code changes. Data capture on ~50 Australian commercial buildings; covering major commercial types/classes, across different Australian jurisdictions with energy patterns and climate zones. measurement is post-build as a whole, the cost/premium data be more reliable, though more averaged than QS estimates. NABERS has been in the market for longer than a decade – familiarity with stakeholders. Access to NABERS data is expected to be straightforward. May get more buildings through Method 2 than Method 1. for these buildings would Limited to those building types covered by NABERS or Green Star ratings tools. Not an exact analogy for Code changes. Well supported by stakeholders but may be less valid as a proxy for costs.