Eco-Friendly Construction Sites: A Guide to Decarbonizing Your Construction Projects
Key Points
- 🏗️ The construction industry accounts for 23% of GHG emissions in France. Eco-friendly construction is becoming an essential tool for reducing this footprint.
- 📊 Starting in 2025, the RE2020 imposes stricter carbon thresholds (530 kg CO₂e/m² for single-family homes), accelerating the adoption of sustainable practices.
- ♻️ Waste management, the use of bio-based materials, and energy efficiency: eco-responsible construction projects have an impact throughout the entire life cycle of the structure.
- 🌱 Platforms such asDecarbo’Solution® enable industry stakeholders to measure, manage, and reduce their carbon footprint at every stage of a project.
Contents
What is an eco-friendly construction site?
The green building movement is much more than a trend: it is a profound transformation of working methods in the construction industry. In the face of the climate emergency, rethinking the way we build is no longer an option. It is an economic and regulatory necessity that affects all stakeholders in the industry.In practical terms, this approach is part of a broader strategy for sustainable transition. It is not just a matter of “building green, ” but of adopting an organizational framework designed to minimize environmental impact, optimize resource use, and plan for the structure’s entire life cycle. Along the way, it also serves as a tool for fostering solidarity among industry stakeholders.
This approach applies to all stakeholders: project owners, project managers, architects, engineering firms, and suppliers. Everyone has a role to play in implementing these measures.
This transition affects all trades: exterior work, renovation of older homes, and the installation of structural lumber.
Why the Construction Industry Must Take Action
At the Heart of Climate Issues
The construction and public works sectors account for 23% of GHG emissions and 43% of annual energy consumption in France. In 2019, this sector emitted approximately 153 million metric tons of CO₂ equivalent. At the operational level, the carbon footprint is estimated to be between 850 and 1,000 kg of CO₂e per m².
These figures speak for themselves. Without a change in practices, achieving carbon neutrality by 2050 will remain out of reach. This environmental challenge affects the entire territory of France.
💜 Did you know?
- Cement manufacturing alone accounts for approximately 10 million metric tons of CO₂e per year in the country, representing nearly 2.5% of domestic emissions. Choosing low-carbon concrete in construction projects can significantly reduce this footprint.
Concrete Economic Imperatives
Beyond climate considerations, this approach addresses competitiveness challenges for organizations in the sector. Since 2026, public procurement contracts must include at least one measurable carbon criterion, accounting for between 10 and 30 percent of the final score in many calls for bids.
Companies that cannot demonstrate a structured approach are automatically excluded from these markets. Furthermore, with the Carbon Border Adjustment Mechanism (CBAM), ensuring the traceability of their supply chains is also a way to protect their profit margins.
The Pillars of an Eco-Friendly Project
A virtuous approach is based on several complementary pillars.
Here are the priority areas:
🏗️ Early-Stage Design — Incorporate life cycle assessment (LCA) from the design phase onward to anticipate the overall impact of the structure.
🌱 Choice of Materials — Prioritize bio-based, recycled, or low-carbon-footprint materials (wood, hemp, low-carbon concrete, recycled steel).
♻️ Sorting and Recycling — Organize on-site recycling, promote reuse, and reduce landfill disposal.
⚡ Energy Efficiency — Reduce the energy consumption of on-site equipment and facilities, and design high-performance, sustainable structures.
🚛 Optimized Logistics — Minimize supply chain distances and choose lower-emission modes of transportation.
🌿 Respect for the Site — Protecting nature and biodiversity, minimizing noise pollution, and restoring natural areas once the project is complete.
⚠️ Warning The RE2020 imposes increasingly strict thresholds. As of January 1, 2025, the Ic will increase to 530 kg CO₂e/m² for single-family homes (down from 640 in 2022). This threshold will drop to 475 in 2028 and then 415 in 2031. Professionals who do not adapt their methods now risk no longer meeting the requirements.
Bio-based materials: the heart of the green project
A Revolution in the Making
The choice of materials is the primary driver of a virtuous and sustainable project. Wood, hemp, straw, flax, cellulose wadding, and cork are no longer limited to “activist” projects. They are becoming a cornerstone of low-carbon construction, promoted by professional associations and specialized organizations.
Unlike traditional concrete or steel, these bio-based products have absorbed carbon from the atmosphere as they grew. This carbon remains stored in the structure throughout its entire lifespan, creating a true carbon sink. Bio-based materials can reduce the carbon footprint by up to 60% of a project’s of a project.
Low-Carbon Concrete and Alternatives
Concrete remains indispensable for many projects. But alternatives do exist: incorporating blast furnace slag or pozzolan as a partial replacement for clinker reduces emissions associated with its production.
Other proposals are emerging: rammed earth for certain structures, CLT (cross-laminated timber) for building frames, and bio-based insulation for facades and roofs. These solutions have now been proven effective and apply to all trades within the industry.
💜 Did you know?
- Virtually all of the low-carbon construction projects studied show significant savings—up to 7 percent—with virtually no increase in budget, thanks to bio-based resources and optimized concrete. The transition does not necessarily entail additional costs.
Traceability: The Key to Credibility
For such an approach to be credible, it must be possible to account for the footprint of each component used. This is the role of the Product Carbon Footprint (PCF) in accordance with the ISO 14067 standard. It makes it possible to document, compare, and defend the carbon footprint of each component.
Platforms such as Decarbo’Solution® facilitate this deployment through the Decarbo’Supply® : suppliers have free access to a calculation portal to calculate PCF , which enhances the reliability of the entire supply chain.
Waste Management and the Circular Economy
A Huge Challenge
Each year, the industry produces approximately 230 million metric tons of waste, making it the country’s largest producer. In a typical project, these volumes account for a significant portion of the overall environmental impact.
Effective project management involves establishing a waste sorting plan as early as the project preparation phase. This includes on-site waste sorting, identifying local recycling channels, and reducing waste at the source through better supply chain management.
Reuse: An Underutilized Tool
The renovation and restoration of existing homes and structures offer significant opportunities. Beams, bricks, tiles, woodwork, and plumbing fixtures: many materials can be salvaged and reused in other projects, thereby reducing the use of new resources.
The circular economy represents a paradigm shift. It involves rethinking how work is organized, raising awareness among teams, and establishing recycling networks in each region. The benefits are considerable: reduced costs, fewer materials sent to landfills, and an improved overall environmental footprint.
📗 Definition
- Thecircular economy as applied to the sector refers to a model that aims to extend the lifespan of components by promoting reuse, repair, recycling, and recovery, rather than landfilling.
The Regulatory Framework in France
RE2020: A Turning Point
Set to take effect in 2022 for new housing, RE2020 is the first French regulation to incorporate carbon performance through life-cycle analysis. It imposes progressive thresholds that become stricter with each phase, redefining industry standards.
For multi-family housing, the threshold will decrease from 740 kg CO₂e/m² in 2022 to 650 in 2025, then 580 in 2028 and 490 in 2031. This trajectory requires professionals to fundamentally rethink their methods.
Climate and Resilience Act: Changes in Public Procurement
Effective August 21, 2026, all public procurement contracts must include at least one environmental criterion. Merely declarative approaches will no longer suffice. The carbon criterion, based on a PCF compliant with ISO 14067, stands out as the most robust solution: quantifiable, standardized, and auditable.
For organizations that participate in public tenders, having a reliable measurement methodology is becoming a key competitive advantage.
The BEGES: An Expanded Requirement
The BEGES (greenhouse gas emissions inventory) is mandatory for organizations with more than 500 employees—and more than 250 starting in 2025. It covers Scopes 1, 2, and 3, which include emissions related to procurement and transportation.
⚠️ Warning
-
Scope 3 accounts for 50 to 90 percent of total emissions of a construction company, of which 60 to 90% come from supplier purchases. A BEGES that overlooks this scope provides only a partial view of the actual carbon footprint. Only through a structured engagement with suppliers can reliable data be obtained and meaningful reduction measures be implemented.
Measuring and Managing the Carbon Footprint of Construction Sites
From Static Assessment to Dynamic Management
Conducting a GHG inventory is a necessary first step. But this document, however comprehensive it may be, is by its very nature merely a snapshot at a given moment. To turn carbon constraints into an advantage, we need a roadmap of reduction actions : one that is measurable, manageable, and auditable.
That is precisely whatDecarbo’Solution®, the collaborative SaaS suite from Global Climate Initiatives, offers. It enables organizations to move beyond mere observation to a proactive approach, covering the entire value chain of the industry.
Modules tailored to the program
Several modules are specifically designed to meet the needs of professionals:
🏗️ Decarbo’Inventory® — Analytical GHG inventory compliant with ISO 14064 and GHG Protocol standards, with free migration from any existing tool.
📊 Decarbo’Target® — Costed action plans (Capex/OpEx) and trajectories aligned with SBTi targets.
🤝 Decarbo’Supply® — Supplier engagement via a free portal, with collection of PCFs compliant with ISO 14067. A key driver for ensuring the reliability of Scope 3 data.
📋 Decarbo’Tender® — Incorporation of carbon criteria into RFPs, with objective scoring and compliance with the 2026 Climate Act.
💜 Did you know?
- The Schmidt Group case study illustrates the power of this approach: thanks toDecarbo’Solution®, the uncertainty surrounding Scope 3 data has dropped from50% to just 5%, resulting in savings of242 metric tons of CO₂ per yearwithin the first few weeks.
Best Practices and Lessons Learned
The “Zero-Carbon Construction Site” certification
The RQE association awards a certification “Zero-Carbon Construction Site” that guarantees the implementation of a comprehensive environmental policy. This label covers the selection of resources, on-site operations, and recycling. It serves as a learning and awareness-raising tool for field teams.
Concrete Actions to Be Implemented
Here are some steps a project manager can take to engage their teams:
🌱 Conduct a carbon assessment before starting the project to identify the areas with the highest emissions.
🏠 Promote local and bio-based products to reduce transportation and sequester carbon in every home and building.
♻️ Adopt a green charter that commits all stakeholders (contractors, suppliers, volunteers) to measurable goals.
📊 Track metrics in real time using digital tools to adjust practices in real time.
🔒 Raise awareness among teams about best practices, safety, and environmental issues related to these new methods.
🤝 Encourage suppliers to share the PCFs for their products.
Involve all stakeholders
A successful project is also a collaborative one, in which every company plays a role. From the project owner to the on-site workers, everyone involved must understand the challenges and commit to the process. Feedback sessions and opportunities to share experiences help foster a shared culture within the teams.
Professional associations and organizations play a crucial role in this process. They offer training programs tailored to renovation trades and provide training to help small and medium-sized enterprises (SMEs) and mid-sized companies build their skills in these areas.
Switch to actTakeaction
Implementing a responsible approach is no longer a concept reserved for pioneers. It is a reality that applies to the entire industry, driven by stringent environmental regulations and a collective awareness.
Professionals who take action now gain a decisive competitive advantage. They secure their access to public procurement markets, protect their profit margins, and meet the expectations of their stakeholders.
But this transformation cannot be carried out haphazardly. It requires reliable tools and structured collaboration across the entire supply chain. Decarbo’Solution® supports stakeholders in this processby offering a comprehensive suite of solutions for measuring, making decisions, and reducing emissions.
👉 Ready to take action? Discover Decarbo’Solution® and turn carbon performance into a driver of responsible competitiveness.
Bibliography
- Bpifrance — Carbon Footprint of the Construction Industry in France —bigmedia.bpifrance.fr
- Ministry of Ecological Transition — Accelerating the Decarbonization of the Sector —ecologie.gouv.fr
- Carbon 4 — Emissions in the sector are falling! —carbone4.com
- FFB — RE2020: New Thresholds Effective as of January 2025 —ffbatiment.fr
- UNEP — Global Emissions Remain High —unep.org
- Sustainable Building Plan — Roadmap for Decarbonizing the Life Cycle —planbatimentdurable.developpement-durable.gouv.fr
- Batiprix — Decarbonization: Best Practices in 2025 —blog.batiprix.com
- Global Climate Initiatives — How to Decarbonize the Construction Industry —decarbosolution.ai