ESG Beyond Carbon: Why Indoor Environmental Quality Is the Metric We’re Still Missing. 

For years, ESG in the built environment has been defined by carbon. But in prioritising energy and emissions, we’ve overlooked a more immediate driver of value: how buildings actually perform for the people inside them. Indoor Environmental Quality (IEQ)—air, light, acoustics, and thermal comfort—is not a soft “wellbeing” layer. It is a measurable performance system that directly impacts cognitive function, productivity, and long-term business outcomes.