Building a Greener Future - Reinventing Construction for the Climate Age
Construction has a problem it can no longer defer.
The built environment is responsible for nearly 40% of global greenhouse gas emissions. Of that, cement and concrete production alone accounts for 7 to 8% — more than aviation and shipping combined. By 2050, the equivalent of a new Paris will be added to global urban infrastructure every single week. If that growth follows the same materials and methods as the last century, the consequences for emissions are significant.
The good news is that the industry is changing. The less comfortable news is that it is not changing fast enough, and the gap between what is technically possible and what is being widely adopted remains large.
I've worked with businesses in and around the built environment for a number of years — as a coach, strategic adviser and NED. What follows is my assessment of what is genuinely shifting, and what it requires from the organisations involved.
The Carbon Hidden in Every Building
Traditional cement production releases CO2 through both fuel combustion and the chemical breakdown of limestone. Each tonne of cement produced generates roughly one tonne of CO2. Multiply that across global construction volumes and the scale of the problem becomes clear.
Add construction waste — plasterboard offcuts, broken masonry, insulation, rubble — and the picture worsens. Millions of tonnes of construction material end up in landfill each year, where decomposition releases further emissions.
These are not new facts. What is changing is the commercial and regulatory pressure on businesses in this sector to do something about them.
What Is Actually Changing
Several credible alternatives to traditional cement now exist and are being used commercially. Businesses including CarbonCure, Solidia and CarbiCrete are producing concrete that locks captured CO2 into the material rather than releasing it. Others are replacing clinker — the most carbon-intensive ingredient in cement — with industrial by-products such as fly ash, slag and calcined clays.
Circular construction practices are also gaining ground. Deconstruction rather than demolition, material passports that track the reuse value of components, and waste sorting technology are moving from pilot projects to mainstream consideration in some markets.
On the operational side, smart insulation, passive ventilation and heat-pump integration can cut the energy demand of a building by half. Regulatory frameworks such as LEED 5.0 are starting to factor in embodied carbon across a building's full lifecycle, not just its operational performance.
Digital modelling tools allow engineers to test material performance and environmental impact before anything is built, reducing the risk that has historically slowed the adoption of new materials.
The Organisational Challenge
The barrier to change in construction is not, in most cases, a shortage of solutions. It is the decision-making environment inside organisations. Procurement teams buying on upfront cost rather than lifecycle value. Boards that have not asked their executive teams to assess climate exposure seriously. Investors who have not yet priced sustainability risk into their expectations of the businesses they back.
The businesses I see making genuine progress are not always the ones with the most advanced technology. They are the ones where someone at board level asked the right questions early enough to change the direction of the business before external pressure made it unavoidable.
A NED with experience in this sector should be pushing on material choices, waste strategy, embodied carbon targets and the assumptions built into long-term capital plans. These are governance questions as much as operational ones.
What This Requires from Leadership
Changing how a construction business operates requires more than a sustainability policy. It requires board-level commitment to decisions that may carry short-term cost against long-term benefit. It requires procurement functions that are measured on something broader than price. And it requires a willingness to challenge assumptions that have been built into the business model for decades.
That is not easy. But the businesses that work through it now are building a position that will matter considerably more in five years' time.
The next blog in this series looks at energy — a sector where change is moving faster than almost anywhere else, and where the gap between what is being built and what the grid can actually carry is becoming a real commercial problem.
Paul Vousden is an executive coach, strategic adviser and Non-Executive Director with experience across construction, clean tech and the energy transition. For speaking enquiries or to discuss a board advisory or NED appointment: Paul@corporate-counsel.co.uk