From Spreadsheets to Smart Sites: LCA Data Collection
Watch the episode on YouTube right here!
Walk onto almost any construction site today and you’ll find the same paradox.
Projects worth tens or hundreds of millions are being delivered with cutting-edge design tools, advanced materials, and increasingly strict sustainability targets. Yet when it comes to documenting what actually happens on site, many teams still fall back on the same tools they’ve used for decades.
Spreadsheets.
Emails.
Folders full of PDFs.
And hours upon hours of manual data entry.
This isn’t just inefficient. It’s becoming a serious problem.
Because across Europe, construction companies are now being asked to document something they’ve rarely tracked before in detail: the carbon impact of the construction phase itself.
And that changes everything.
In our recent episode of the Inventing Construction podcast, we spoke with Oline, founder and CEO of the SaaS platform acembee, about one of the most underestimated challenges emerging on construction sites: collecting and managing LCA data during execution – LCA A4 and A5.
What quickly became clear is that the real issue isn’t carbon calculations. It’s the way we collect the data in the first place.
In the following article, we’ll discuss:
- The new reality: LCA doesn’t stop at design
- Construction’s least glamorous problem: paperwork
- The documentation bottleneck nobody planned for
- The smarter alternative
- The real opportunity hidden inside LCA data
- Three practical tips for contractors starting LCA
The new reality: LCA doesn’t stop at design
Sustainability discussions in construction have focused heavily on the design phase and operations. Material choices. Heating systems. Embodied carbon in products.
But the construction phase itself also generates emissions.
Transport of materials.
Fuel consumption from machines.
Waste handling.
Site electricity and heating.
All of these fall under the A4 and A5 stages of Life Cycle Assessment (LCA)—the phases covering transport to site and the construction process itself.
In Denmark, the regulations are already clear. New buildings must comply with strict carbon limits over their lifecycle, including emissions generated during construction. The current limit is 1.5 kg CO₂ per square meter per year over a 50-year period.
That requirement is forcing contractors to document site activities in ways they’ve never had to before.
And while Denmark may be ahead of the curve, this direction is unmistakably European.
If you work in construction anywhere across the EU, you will likely face similar requirements sooner rather than later.
The problem is: the industry hasn’t built the processes to support it yet.
Construction’s least glamorous problem: paperwork
Here’s how LCA documentation typically works today. A contractor sends Excel templates to the subcontractors.
Each subcontractor is asked to fill in numbers for fuel usage, waste quantities, transport distances, or electricity consumption. They attach documentation, often PDFs, and send everything back.
Someone on the project team then:
- Checks the spreadsheet
- Reviews the attachments
- Verifies whether the data is correct
- Combines the results with data from other subcontractors
- Updates the master spreadsheet
And this repeats again.
And again.
And again.
The result?
An enormous amount of time spent moving data from one place to another.
Multiply that across dozens of subcontractors, hundreds of documents, and a multi-year project, and suddenly LCA compliance becomes a full-time administrative burden.
Not because the calculations are complicated. But because the process is incredibly inefficient.
The documentation bottleneck nobody planned for
There’s another complication. LCA documentation can’t simply be done at the end of a project.
Teams must track progress continuously to ensure the project stays within carbon limits. If emissions exceed the threshold too late in the process, there’s very little anyone can do about it.
That means contractors must constantly answer questions like:
- Are we still within our carbon budget?
- Have all subcontractors submitted their data?
- Are we missing documentation?
- Do we need to adjust site operations?
Trying to manage that with spreadsheets creates a constant bottleneck.
Documents arrive late.
Files get lost.
Templates are filled out incorrectly.
Different subcontractors structure their data differently.
And the person responsible for pulling it all together ends up spending an extraordinary amount of time simply trying to make sense of the information.
The smarter alternative
When people talk about improving construction workflows, the conversation often jumps straight to technology. But technology alone isn’t the answer. But it does help.
Instead of forcing subcontractors to manually fill out spreadsheets, a more efficient approach is to let them provide documentation directly and allow software to structure the data automatically.
That’s the thinking behind platforms like acembee, an AI-powered SaaS solution designed to process construction documentation.
Contractors and suppliers simply forward documentation, such as PDFs, to the platform, where the system extracts the relevant data and organizes it automatically.
This doesn’t magically solve every challenge. But it removes a huge amount of friction.
And project teams can see a clear overview of where they stand against their carbon targets. More importantly, the data becomes available in real time, not weeks later.
The real opportunity hidden inside LCA data
There’s a deeper point here. Collecting LCA data isn’t just about compliance.
It’s about learning.
For the first time, contractors will begin building large datasets that reveal patterns across projects:
- Which suppliers produce less waste
- Which construction methods generate fewer emissions
- Which site operations are inefficient
Over time, that data becomes incredibly valuable.
Imagine comparing projects and discovering that one subcontractor consistently generates significantly less waste than others. Or identifying construction methods that reduce both carbon emissions and costs.
Without structured data, those insights are impossible.
With it, contractors can start making smarter decisions across their entire portfolio.
Three practical tips for contractors starting LCA
For many contractors, this is still new territory. So where should they begin?
During the podcast episode, Oline shared several practical suggestions.
1 Align on one approach
Don’t let every project invent its own system. If each project uses a different template, structure, or process, subcontractors will quickly become confused, and data quality will suffer.
Instead, agree on one consistent approach across projects.
Consistency is more valuable than perfection.
2 Sort waste properly
Waste management has a surprisingly large impact on LCA results.
Mixed waste often carries higher carbon penalties because recycling becomes difficult or impossible. Sorting waste correctly on site improves both environmental outcomes and project costs.
It’s not always easy, especially on smaller sites with limited space. But it’s one of the most effective steps contractors can take.
3 Reduce waste at the source
Another overlooked opportunity is simply reducing the amount of waste produced in the first place.
Construction sites often order more materials than they actually use. That excess eventually becomes waste, adding both carbon emissions and unnecessary costs.
Better planning and smarter procurement can significantly reduce both. And once LCA data becomes available across multiple projects, these inefficiencies become much easier to spot.
The sites that adapt fastest won’t necessarily be the ones with the most advanced technology. They’ll be the ones that design smarter processes from the start.
Because the goal isn’t to replace people with software. It’s to stop wasting their time on work that software can do better.
Construction professionals didn’t enter the industry to spend their days copying numbers between spreadsheets. They came to build.
And if the industry gets its processes right, that’s exactly what they’ll be able to spend more time doing.