Net zero in construction: why "we've always done it this way" no longer works.

Construction is only just waking up to net zero. That's not a criticism. It's where we are. The gap between target and readiness shows up everywhere. Government policy on decarbonising buildings has already been ruled unlawful in court, due to being too vague on how targets get met. And there's still no standard, sector-wide way to measure embodied carbon. When an industry can't agree on how to count its own emissions, "net zero by 2050" is easy to say. Hard to deliver.

That resistance to change is familiar to anyone who's watched digital adoption play out on site. The same logic that kept some contractors on paper "because we've always done it this way" is now showing up in how the industry approaches carbon. But the comfort of doing nothing has a shelf life. The industry moves on, whether or not you move with it, and the businesses still resisting change in five years will be the ones left behind, on paper and on carbon.

A generational shift is underway. Current leadership won't be in post forever, and a new wave of younger voices, many of them coming up through sustainability-focused roles rather than traditional construction routes, are pushing the conversation forward. Change in construction has never come from the top down alone. It comes from people who refuse to accept "that's how it's always been."

What is net zero, really?

Take away the jargon and net zero is simple: offsetting all of the carbon you put into the world. In construction, that spans the whole building lifecycle, not just the build phase, which is where most contractors and subcontractors are focused, but the operational phase too: the decades a building runs after handover.

That means accountability doesn't stop with the people on site. It extends to developers and clients, who carry the responsibility for how a building performs once it's occupied, how it's powered, whether renewables are part of the picture, and how much carbon it releases over its lifetime. Net zero, done properly, is a whole-lifecycle commitment, not a build-phase checkbox.

The gap between site and office.

Sustainability doesn't look the same depending on where you sit in the business, and that gap is one of the industry's biggest blind spots.

On site, sustainability often shows up as "don't litter": a rule to follow rather than a target to hit. In the office, it's the opposite: people under real pressure to report accurate numbers to the board, worried about coming in over or under emissions targets. The stakes feel completely different depending on which side of that line you're standing on.

That's not a motivation problem. It's an education problem. If sustainability is going to move beyond a boardroom metric, the industry needs to make the "why" tangible at every level, not just measurable at the top.

Why is this so hard to manage, even when the will is there?

Even where the appetite for change exists, the industry runs into the same wall: you can't manage what you can't measure.

Construction has scope 1, 2 and 3 guidelines to work from, but no real standardisation in how carbon gets reported. Two sites, similar size, similar load, similar output, can report wildly different numbers, simply because there's no shared standard for what "good" data collection looks like. Without that consistency, it's nearly impossible to say which approach is actually working, or to hold anyone accountable to a fair benchmark.

Add in a genuine lack of industry-wide education around why carbon reporting matters, not just that it's a compliance formality, and it's easy to see why sustainability in construction has stalled at good intentions rather than consistent action.

What the future holds: the carbon receipt.

Here's the shift that changes everything: imagine every building coming with a carbon receipt, the same way a restaurant bill itemises exactly what you consumed and what it cost. Every material, every delivery, every phase of the build, broken down and accounted for. That's when carbon reporting stops being an estimate and starts being something measured fairly, consistently and, critically, comparable across the industry.

That kind of itemised reporting depends entirely on the quality of data going in at the site level. This is exactly where the industry's data infrastructure needs to catch up, and where tools already in use on site have a role to play. Granular, real-time data capture (induction records, plant and equipment movements, deliveries and materials) is the foundation any credible carbon accounting system will need to be built on.

It's also why AI-assisted data capture matters more than it might first appear. Manually logging every delivery note is slow, and it's the kind of task people cut corners on once the novelty wears off. It's also prone to human error and small inconsistencies can build up fast. Automating that capture doesn't just save admin time; it means the data feeding into carbon reporting is more complete and more consistent, which is the whole foundation the "carbon receipt" concept depends on.

None of this happens by accident. It happens when the industry stops treating carbon reporting as a compliance exercise and starts treating it as infrastructure: standardised, itemised, and built into the way we already capture data on site.

Read more about how innDex AI delivery notes contribute to “the carbon receipt” future here.