Office fit-out carbon footprint: LCA method, scope 3, new vs reuse arbitration and CSRD reporting. Operational Kytom guide for real estate management teams.
"How do we quantify the impact"
Redoing an LCA at the end of a project costs 3 to 5 times more than upfront framing. On a 1,000 sqm project, a late carbon audit requires 8 to 12 additional days of project management, i.e. 12,000 to 20,000 euros not budgeted, not counting the trade-offs already locked in on furniture.
Without shared quantification, CSR and project management teams clash on trade-offs. <a href="https://www.anact.fr/ressources" rel="noopener" target="_blank">ANACT</a> notes that 38% of fit-out projects generate internal tensions linked to the absence of objective criteria. The carbon footprint becomes a common language between real estate management, procurement and engaged employees.
The tertiary regulation mandates a reduction in energy consumption of 40% in 2030, 50% in 2040 and 60% in 2050 relative to the reference of the 2010 decade, and the CSRD now requires scope 3 traceability. Companies with more than 250 employees must publish their emissions linked to purchased goods and services. An approximate declaration exposes the company to a reclassification risk and harms the extra-financial rating.
Kytom integrates carbon quantification from the programme phase onwards, across each of the 11 agencies. Our project managers use a simplified LCA grid aligned with a reference Bilan Carbone methodology, covering scope 3 categories 1, 2, 4 and 5 (purchases, fixed assets, upstream transport, waste). Each furniture reference (Vitra, Herman Miller, Knoll or French equivalent) is linked to a verified FDES or EPD. Across 1200+ clients supported since 2006, we have built a database of 1,800 quantified references that accelerates simulation. The comparative new vs reuse deliverable is provided in 3 weeks, with a measured average gap of 42% in favour of calibrated reuse.
Inventory of existing furniture and partitions, weighing of materials and identification of available FDES. Deliverable: reference emissions table per item (furniture, floors, partitions, site electricity), expressed in kgCO2e/sqm. Framing of the chosen scope 3 perimeter, validated with CSR management and real estate management.
Construction of 2 or 3 fit-out scenarios, from all-new to a 60% reuse mix. Each scenario is quantified in tCO2e, in euros excl. VAT/sqm and in lead time. Deliverable: arbitration matrix cross-referencing carbon impact, budget and schedule, presented to the steering committee in a 90-minute session.
Selection of furniture references with verified EPD, choice of demountable partitions and bio-based or recycled finishes. Priority given to local supply chains (within a 400 km radius). Deliverable: specifications booklet incorporating carbon data per reference, validated by the project owner before launching supplier consultations.
Collection of actual data at the end of the project (delivery notes, mileage, recovered waste). Recalculation of the final LCA and gap against forecast. Deliverable: project carbon report exportable in Bilan Carbone format, integrable into CSRD reporting and the group ESG dashboard.
"We needed credible quantification for our CSRD report. Kytom delivered an enforceable LCA, validated by our statutory auditor, in less than a month."
Categories 1 (purchases of goods and services), 2 (fixed assets), 4 (upstream transport) and 5 (waste) cover 92% of emissions within the chosen Bilan Carbone methodological perimeter. Categories 6 and 7 (travel) are attached to operations, not to the project.
Life cycle assessment studies a product from cradle to grave, covering all of its stages. The project carbon footprint aggregates the life cycle assessments of all the elements of a fit-out over a given time perimeter, generally 10 years, i.e. the accounting depreciation period of the furniture.
In 85% of cases yes, with an average saving of 70% on the furniture item. But reuse requiring 500 km of road transport can lose 30% of its advantage. We systematically calculate the relevance threshold per lot.
We require a third-party verified FDES or EPD for each reference exceeding 50 kg or 500 euros excl. VAT. Failing that, we apply the default values from reference environmental databases, increased by 20% as a methodological precaution.
Yes, provided it complies with a recognised life cycle assessment framework and covers at least 60% of emissions with primary data. Our reports are structured to meet ESRS E1 and are accepted by the main statutory auditors involved in sustainability reporting.
Yes, carbon quantification directly feeds the assessment frameworks for environmental performance in operation and environmental quality of sustainable buildings. A single dataset serves both approaches, which reduces consolidation time by 40% on the real estate management side.