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Showing posts from April, 2025

7 Embodied Carbon Reporting Errors That Can Affect Green Star

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  Embodied carbon reporting is now a central part of Green Star certification. It measures the emissions locked into a building's materials, from manufacture to installation. This data often feeds into a broader ESD Report , so accuracy matters well beyond the carbon figures alone. The problem is that these reports are detailed and easy to trip up on. Small mistakes in data or scope can quietly undermine the whole assessment. Get the reporting wrong, and you risk losing points or delaying your Green Star certification entirely. Here are seven of the most common errors and how to avoid them. If You’re Preparing for a Green Star Audit, Avoid These 7 Reporting Mistakes 1. Using Incomplete Material Data The most frequent error is missing material information. An Embodied Emission Report relies on accurate quantities for every major building element. When steel, concrete, or glazing figures are estimated rather than measured, results skew badly. Assessors need real data drawn from the b...

The NatHERS Existing Homes Scheme: A New Tool for Energy Ratings

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Australia’s housing landscape is undergoing a transformative shift with the expansion of the Nationwide House Energy Rating Scheme (NatHERS ) to include existing homes.  This landmark initiative, set for full rollout by mid-2025, aims to improve energy efficiency, reduce household costs, and support Australia’s transition to net-zero emissions.  For homeowners, renters, and industry professionals, this marks a pivotal step toward sustainable living. Let’s explore what this expansion entails, its implications for NatHERS assessors, and how it interacts with existing frameworks like BASIX. Why NatHERS for Existing Homes Matters? Most Australian homes were built before modern energy standards, with over 10.8 million dwellings averaging below three stars in energy performance.  The new NatHERS Existing Homes Scheme addresses this gap by introducing standardised energy assessments that evaluate a home’s thermal performance, fixed appliances (e.g., heating/cooling systems), a...