How Australia's built environment is navigating sustainability communications

Ask any sustainability professional in Australia’s built environment sector what keeps them up at night, and the answer is increasingly less likely to be about materials or energy ratings. It’s about words. Specifically, which ones are safe to use.

That’s the central finding of the ‘Australian Built Environment Communications Report: Navigating Sustainability Claims in an Era of Scrutiny’, produced following an industry roundtable convened by the Anti-Greenwash Charter in late 2025. Drawing on the candid perspectives of architects, government advisors, sustainability consultants, product manufacturers and industry advocates, the report maps the communication terrain that practitioners have to navigate daily. Its findings reveal this terrain to be far more treacherous than most realise.

A sector uniquely exposed

The built environment has always been subject to scrutiny on its environmental performance. Buildings account for a substantial share of global emissions, and the sector has been quick to adopt the language of net zero, low-carbon materials and sustainable design. But unlike, say, a fast-moving consumer goods company making a product circularity claim, built environment organisations deal in complexity that compounds communication risk at every turn.

A single development project can involve dozens of stakeholders across the supply chain, including architects, engineers, contractors, material manufacturers, and eventually, tenants. Each contribute to the project’s final sustainability outcome. An embodied carbon figure depends on supplier-provided Environmental Product Declarations that vary in quality and methodology. An energy performance claim may be based on modelled, rather than measured, outcomes. A design certification can reflect intended performance rather than operational reality.

This is the gap between design intent and built performance that the report identifies as a fundamental credibility challenge. Unfortunately, it’s also one the sector has been slow to address. Post-occupancy evaluation, for example, remains inconsistently applied in Australia. That means promises made at the development application stage are rarely tested against what is actually delivered.

The ambition-defensibility paradox

At the heart of the report’s findings is what it describes as an ambition versus defensibility paradox. Organisations face simultaneous, competing pressures: commercial and reputational imperatives reward demonstrating sustainability leadership, but a tightening regulatory environment demands every claim be fully substantiated.

Australia now leads the world in greenwashing enforcement. The ACCC and ASIC have both made environmental claims a top enforcement priority, with penalties reaching into the tens of millions.

For practitioners, that enforcement activity is creating a chilling effect. Several roundtable participants reported actively reducing their external sustainability communications over the past 12 to 18 months. The calculus has shifted, with the reputational upside of sustainability leadership being weighed against the downside of regulatory scrutiny. Silence is winning.

Greenhushing: the risk hiding in plain sight

The report is particularly pointed in its treatment of greenhushing. While excessive caution may reduce short-term regulatory exposure, the report argues it creates a different, longer-term problem. If organisations achieving genuine progress stay silent while those making exaggerated claims continue to communicate, stakeholders lose the ability to distinguish leaders from laggards.

Information asymmetry increases, trust erodes, and the credibility crisis deepens. This can happen even as the underlying sustainability work improves. For a sector that depends on investor confidence, planning approvals and a social license to operate, that erosion carries real commercial consequences.

The governance gap

One of the report’s more practically useful observations concerns the internal mechanics of how sustainability communications get produced. In most organisations, the process fragments across multiple functions. Sustainability teams prioritise accuracy and comprehensive disclosure. Marketing teams prioritise clarity and competitive positioning. Legal teams prioritise risk mitigation.

Project delivery teams, who hold the most detailed knowledge of actual performance, are rarely involved in external communications at all.

The result is what the report calls the “marketing-sustainability-legal triangle”, a dynamic in which each function pulls in a different direction without clear decision-making authority or shared risk tolerance. Approval processes introduced to combat greenwashing have become, in some cases, a new source of dysfunction. One participant observed that by the time legal is comfortable with language, the messaging has been hedged and qualified into meaninglessness.

Stronger governance structures such as evidence libraries, claim inventories, and structured approval systems with clearly defined roles, are among the report’s practical recommendations for addressing this fragmentation.

The path forward: credibility over caution

The report does not suggest that the answer to greenwashing anxiety is to stop communicating. Rather, the sector needs to shift from reactive caution to proactive credibility. It must build the internal infrastructure and industry-wide standards that allow organisations to communicate sustainability progress with confidence.

That means regular audits of public sustainability claims, documentation of supporting evidence, and greater collaboration between regulators and industry bodies to develop sector-specific guidance and safe harbours for credible disclosure. It also means being honest about uncertainty. The sector must acknowledge methodological complexities behind elements like embodied carbon figures, for instance, rather than present them as more definitive than they are.

Ultimately, the report frames this as a competitive opportunity. Those organisations that invest now in credible, transparent communication are building a key asset: stakeholder trust. This will only appreciate in value as regulatory and market scrutiny intensifies. Credibility, the report concludes, may soon become the most valuable sustainability credential in the built environment.

The full report can be found on the Anti-Greenwash Charter website.

Image credit: iStock.com/Eoneren