EPD vs LCA in Construction —
Which and When?
Both EPD (Environmental Product Declaration) and LCA (Life Cycle Assessment) evaluate the environmental impact of construction materials, but serve different purposes. This guide explains the practical difference, applicable standards, and when to choose one over the other for your projects.
What is LCA in construction?
Life Cycle Assessment (LCA) is a methodology standardised under ISO 14040 and ISO 14044 for evaluating the environmental impacts of a product or system across its full life cycle: from raw material extraction (cradle to grave), through production, transport and use, to demolition and disposal. In construction, LCA is essential for comparing material alternatives, optimising design at the project stage, and calculating a building's carbon footprint over its entire service life.
Construction LCA uses the modular framework defined by European standard EN 15978 (for buildings) and EN 15804 (for construction products). Life-cycle modules are: A1–A3 (product manufacture), A4–A5 (construction), B1–B7 (use), C1–C4 (demolition and disposal), D (benefits beyond system boundary).
What is an EPD?
An Environmental Product Declaration (EPD) is a standardised, third-party verified and publicly published document communicating the results of an LCA study to EN 15804 or ISO 21930. An EPD contains quantified values of key environmental indicators per functional unit: carbon footprint (kg CO₂e/m² or /tonne), primary energy consumption (MJ), acidification, eutrophication, ozone depletion potential, etc. EPDs are published in public databases such as EPD Norge, EPD Italy, EPD Hub, IBU (Germany) and INIES (France). An EPD is valid for five years and may be renewed.
Direct comparison: EPD vs LCA
| Criterion | LCA (internal study) | EPD (verified declaration) |
|---|---|---|
| Reference standard | ISO 14040 / ISO 14044 | EN 15804+A2:2019 / ISO 21930 |
| Third-party verification | ◎ Optional | Mandatory |
| Public disclosure | Not required | Yes — in EPD programme database |
| Validity | — Undefined (internal) | ✓ 5 years |
| Cost | €2,000–8,000 | €5,000–20,000 (includes verification) |
| Duration | 4–8 weeks | 3–6 months |
| Accepted in LEED v4 | Partially (MR Credit) | Yes (MR Credit — EPDs) |
| Accepted in BREEAM | Partially | Yes (Mat 01) |
| Required in EU public tenders | ✗ No | Yes (Green Public Procurement) |
When to choose LCA (without EPD)?
LCA without EPD is the right tool in early project stages when the goal is design optimisation, not certification. Typical scenarios: comparing reinforced concrete vs. CLT timber structure; assessing whether 20 cm vs. 15 cm insulation is justified on a whole-life-cycle basis (production plus energy savings in use phase B6); internal ESG sustainability reporting where no LEED/BREEAM certification is required; and as a first step before deciding whether a product warrants investment in a full EPD.
When to choose EPD?
An EPD is necessary when there is an external requirement for verified, public communication: LEED v4 MR Credit (EPDs required for 20 permanent construction products); BREEAM Mat 01 (verified EPDs for key materials); EU Green Public Procurement (GPP) tenders; commercial entry into Western European markets where major contractors require EPDs from material suppliers; and new product launches where the competitive ecological advantage must be documented and communicated.
Frequently asked questions about EPD and LCA in construction
How much does an EPD cost for a Romanian construction materials manufacturer?
Total cost for an EPD to EN 15804+A2, verified and published, ranges from €5,000 to €20,000 depending on product complexity, number of variants and EPD programme chosen. CarbonDRI performs the LCA study underlying the EPD, coordinates third-party verification and manages publication. Contact us for a detailed quote.
Can an internal LCA be used for LEED or is a verified EPD mandatory?
LEED v4 MR Credit accepts whole-building LCAs (MR Optimization credit). However, for the product-specific EPD credit, verified EPDs to EN 15804 or ISO 21930 are required. An internal LCA without third-party verification is not accepted as an EPD in LEED.
Are Romanian EPDs accepted in European projects?
Yes, provided they are verified to EN 15804+A2 by an accredited body and published in a recognised EPD programme (IBU, EPD Norge, EPD Hub, etc.). CarbonDRI can guide Romanian manufacturers in choosing the optimal programme for the target market.
Do EPD and LCA calculate the same carbon emissions?
Not fundamentally differently — both calculate Global Warming Potential (GWP) in kg CO₂e. The difference is that EN 15804+A2 requires separating biogenic, fossil and land-use GWP, plus carbonation indicators. An ISO 14040 LCA does not have these granularity requirements unless prepared for EPD.
Do I need an EPD if I produce construction materials only for Romania?
Romanian legislation does not currently mandate EPDs, but the trend is clear: Government Decision 1236/2023 on green public procurement is beginning to include environmental performance criteria. Obtaining an EPD now is advisable if you plan to expand to European markets or bid on major public tenders in the future.
LCA or EPD for your construction materials?
CarbonDRI conducts LCA studies to ISO 14040/14044 and EPDs to EN 15804+A2, verified and published in international programmes. We guide Romanian construction material manufacturers on the optimal path to certification.
Request LCA/EPD Consultancy for Construction →See also: LCA Service · EPD Service · LCA vs EPD vs CFP Guide