According to Architecture 2030, a non-profit organisation established in 2002 in response to the climate change crisis, we’re in the midst of the largest wave of building and infrastructure growth in human history, and between 2020 and 2060, an estimated 241 billion square metres of new floor area will be added to the global building stock. Architecture 2030 equates that to adding an entire New York City to the world every month, for four decades.

Closer to home, this global pressure is reflected in Australia’s own urgent need for supply; with a national target to build 1.2 million new homes over the next five years, our local sector is operating at a pressing intersection of a housing crisis and a carbon emergency.

This reality should give us pause, especially given that three-quarters of the infrastructure that will exist in 2050 has not even been built yet. And if embodied carbon emissions of a project are locked in once the building is constructed – and cannot be reversed or reduced – the responsibility to actively consider and reduce the carbon footprint of any new build has never been bigger.

WoodSolutions, Australia’s leading resource for timber information, suggests that to genuinely tackle this urgent carbon issue, the industry must look upstream, to the projects’ earliest design stages.

new-house-construction-framework-of-wood-beams-leszekglasner-Envato.jpg — *Image: leszekglasner / Envato*

Whole-building carbon: the next – not new – normal

The idea that the biggest carbon reductions come from a holistic approach to a project isn’t new – Kevin Peachey, Head of Built Environment Programs at Forest & Wood Products Australia at WoodSolutions suggests that whole-building carbon optimisation is well understood, and tools like the Whole-Building Lifecycle Assessment (WBLCA) are well supported.

Awareness, however, is not enough, Kevin observes, and neither is the act of holistic thinking in itself. “This comprehensive approach to optimising a building’s carbon impact must become the norm and occur very early in the design process,” he says. It’s at the concept stage – through foresight and careful consideration regarding those key early choices – that the most significant, long-term environmental gains can be achieved.

“Early-stage structural design plays a major role in shaping the final embodied carbon outcomes as it allows project teams to understand how materials and quantities influence holistic building performance over time,” he explains. “Comparing and considering structural systems and construction methodologies before project decisions are locked in and it’s too late for change is a common-sense approach.”

This is where mass timber emerges as a powerful catalyst for whole-building carbon reduction. Beyond simply meeting key environmental measures on its own, timber’s true value, Kevin points out, lies in its ability to support sustainability goals when structural efficiency, embodied carbon and operational performance are all considered together from the very beginning.

Early decisions, long-term benefits

T3 Collingwood – the national headquarters for Forest & Wood Products Australia and WoodSolutions – is a prime example of how timber’s unique whole-building potential can scale into multi-level commercial construction.

Developed by Hines and designed by Jackson Clements Burrows Architects as an embodiment of the “T3” model – Timber, Transit and Technology – one of Melbourne’s tallest mass-timber buildings aptly highlights just how an early-stage timber strategy can help reduce embodied carbon of an entire building.

By adopting a hybrid approach – a concrete-and-steel podium with ten upper levels of mass timber – the 15-storey project thoughtfully capitalised on timber’s unique profile. The ten upper levels utilised glue-laminated timber (GLT) columns and beams alongside cross-laminated timber (CLT) floor slabs supplied by Australian Sustainable Hardwoods. The lighter weight of this timber volume significantly reduced the load on the base, enabling a more efficient and less carbon-intensive foundation.

This structural-timber-first whole-building strategy achieved an overall embodied carbon reduction of approximately 34% compared to traditional concrete construction. Plus, Kevin adds that the prefabricated nature of mass timber enabled those ten levels to be erected in just 60 days – a speed and efficiency of construction that delivers significant environmental and financial benefits to clients and developers.

WoodSolutions-Sustainable-Project-T3-Collingwood-Jackson-Clements-Burrows-Architects-1.jpg — *Image: T3 Collingwood by by Jackson Clements Burrows Architects / Supplied*

Modern methods for the residential sector

Encouraging this systemic shift in the residential and mid-rise sector, the Future Framing Initiative (FFI) unites the entire building ecosystem, from lightweight timber suppliers to educators and installers, to herald a sustainable timber-framing future.

“This landmark industry collaboration, led by Forest & Wood Products Australia, is developing a new industry standard to streamline the specification of lightweight timber-framed construction across all mid-rise building classes,” Kevin explains, adding that it’s where timber has been proven to offer lower embodied carbon than alternative structural systems. “It harnesses Modern Methods of Construction (MMC) to address critical challenges like simplified compliance, supply reliability and sustainability.”

The end goal? To help address both Australia’s immediate housing needs and long-term environmental aspirations through a specification process that enables more efficient low-carbon construction.

Tools and resources for the next normal

As the importance of embodied carbon accounting and reduction continues to rise – alongside the rigour required to pursue multiple sustainability frameworks like Green Star and NatHERS – so does the role of early decisions that lock in favourable outcomes in the long run. And to help industry professionals proactively embrace this approach, WoodSolutions offers a comprehensive set of free, easily accessible education, tools, data and technical resources across the full project lifecycle.

From reports detailing the realities of mid-rise timber construction to Australia’s most comprehensive Environmental Product Declaration (EPD) database covering 90 locally available products, these materials are meticulously prepared to help professionals make informed and sustainable decisions in those first, consequential moments of any project – and avoid costly, both financially and environmentally, late-stage swaps.

“By providing detailed product information across domestic and international sources, we help architects, designers, engineers and sustainability professionals meet regulatory and certification goals,” Kevin says, “and – crucially – streamline carbon accounting.”

From incremental gains to systemic change

While the fact that three-quarters of the infrastructure that will exist in 2050 is yet to be built might seem like a daunting challenge, this inspiring backdrop – WoodSolutions’ active, educational efforts, industry initiatives like FFI and real-life mass-timber projects like T3 – redefine it as a monumental opportunity.

However, if the equivalent of a new New York City is being added to the global building stock every month, and the resulting embodied carbon is locked in the moment construction ends, shifting the design focus upstream becomes an absolute necessity and – hopefully – soon the next normal.

“By embracing whole-building thinking from the start, industry professionals can achieve far greater carbon reductions, moving well beyond incremental gains,” Kevin concludes. “This proactive approach allows project teams to avoid late-stage compromises and redesigns, ultimately delivering projects that are high-efficiency, buildable and future-ready.”

From thinking big to building whole: Early design critical to curbing carbon long-term

Let’s connect!