Deep dive: Embodied carbon in real estate & construction — the fastest-moving subsegments to watch

The construction industry accounts for 37% of global energy-related carbon emissions, yet until recently the sector's decarbonization focus centered almost exclusively on operational energy, the electricity and fuel consumed during a building's use phase. That equation has shifted decisively. As operational efficiency improves through electrification and renewable energy procurement, embodied carbon, the emissions embedded in material extraction, manufacturing, transport, and construction, now represents 50-70% of a new building's lifecycle emissions over a 60-year horizon. In emerging markets, where construction activity will account for an estimated 60% of global building floor area additions through 2040, the embodied carbon challenge is both larger and more commercially complex than in developed economies. This deep dive identifies the fastest-moving subsegments where capital allocation, regulatory momentum, and technological maturity are converging to reshape procurement decisions.

Why It Matters

Global cement production alone generates approximately 2.8 gigatonnes of CO2 annually, roughly 8% of global emissions, more than any single country except China and the United States. Steel manufacturing adds another 2.6 gigatonnes. In emerging markets, these materials dominate construction precisely because alternatives remain less available, less standardized, and less trusted by structural engineers and building officials. India's cement production increased 28% between 2020 and 2025; Southeast Asian concrete consumption grew 35% over the same period. Without interventions targeting embodied carbon, the construction boom in Africa, South and Southeast Asia, and Latin America will lock in decades of emissions from long-lived infrastructure.

Regulatory pressure is accelerating from multiple directions. The EU's Carbon Border Adjustment Mechanism (CBAM), fully operational from 2026, imposes carbon costs on imported cement, steel, and aluminum, directly affecting emerging market exporters supplying European construction. India's Bureau of Energy Efficiency introduced mandatory energy performance standards for cement plants in 2025. Brazil's PBACV program now requires lifecycle assessments for public buildings exceeding 5,000 square meters. Indonesia's Green Building Council launched mandatory whole-life carbon reporting for commercial buildings in Jakarta in 2024.

For procurement professionals, these shifts mean that material specifications can no longer treat embodied carbon as an externality. Environmental Product Declarations (EPDs), which quantify the carbon intensity of specific construction products through standardized lifecycle assessment, have become essential procurement instruments. The number of construction EPDs registered globally increased from approximately 12,000 in 2020 to over 85,000 in 2025, with the fastest growth in India (780% increase), Brazil (420%), and Turkey (310%), according to data from the InData platform and national EPD program operators.

Key Concepts

Whole-Life Carbon Assessment (WLCA) quantifies total greenhouse gas emissions across all lifecycle stages of a building: material production (modules A1-A3), transport (A4), construction (A5), maintenance and replacement (B1-B5), operational energy (B6-B7), demolition (C1-C4), and potential benefits from reuse or recycling (module D). The EN 15978 standard provides the calculation methodology, while the forthcoming ISO 21678 revision aims to harmonize international approaches. WLCA shifts decision-making from operational energy alone to total lifecycle impact, frequently revealing that material choices outweigh decades of operational emissions.

Environmental Product Declarations (EPDs) are independently verified documents reporting the environmental impact of construction products based on lifecycle assessment. Type III EPDs following EN 15804+A2 or ISO 14025 standards provide product-specific data on global warming potential, resource depletion, and other impact categories. EPDs enable direct comparison between competing products (Portland cement versus geopolymer cement, structural steel versus mass timber) and form the quantitative foundation for whole-life carbon assessments at the building level.

Carbon Intensity Benchmarks express embodied carbon per unit of functional output, typically kgCO2e per square meter of gross floor area or per unit of structural capacity. The Carbon Leadership Forum's Embodied Carbon in Construction Calculator (EC3) database contains over 100,000 EPDs and enables procurement teams to compare products against category averages. Regional benchmarks vary significantly: a typical reinforced concrete office building in India embodies 800-1,200 kgCO2e/m2, compared to 600-900 kgCO2e/m2 in Europe and 500-800 kgCO2e/m2 in timber-hybrid designs.

Supplementary Cementitious Materials (SCMs) are industrial byproducts or natural pozzolans that partially replace Portland cement clinker, reducing the carbon intensity of concrete without requiring new manufacturing processes. Common SCMs include ground granulated blast furnace slag (GGBS), fly ash from coal power plants, silica fume, and calcined clay. The clinker-to-cement ratio is the single most impactful lever for concrete decarbonization: reducing it from the global average of 0.71 to 0.60 would eliminate approximately 400 million tonnes of annual CO2 emissions.

Embodied Carbon Benchmarks by Building Type

Building Type	Below Average	Average	Above Average	Leading Practice
Residential (Low-Rise)	>700 kgCO2e/m2	500-700	350-500	<350
Commercial Office	>900 kgCO2e/m2	650-900	450-650	<450
Industrial/Warehouse	>500 kgCO2e/m2	350-500	200-350	<200
Healthcare	>1,200 kgCO2e/m2	900-1,200	650-900	<650
Infrastructure (Bridges)	>1,500 kgCO2e/m2	1,000-1,500	700-1,000	<700
Affordable Housing (Emerging Markets)	>600 kgCO2e/m2	400-600	250-400	<250

Fastest-Moving Subsegments

Low-Carbon Cement and Concrete

This subsegment represents the single largest embodied carbon reduction opportunity and is attracting the most capital globally. The cement industry's decarbonization pathway encompasses three tiers of intervention: clinker substitution with SCMs (available now, 20-40% reduction), novel binder chemistries (commercializing 2025-2030, 50-70% reduction), and carbon capture integration at kiln level (piloting through 2030, 90%+ reduction).

In emerging markets, the most commercially viable near-term strategy is expanded use of calcined clay and limestone (LC3 technology), developed by EPFL and deployed commercially in India, Cuba, and Colombia. LC3 reduces cement carbon intensity by 30-40% using locally available materials at comparable or lower cost than ordinary Portland cement. India's Dalmia Cement commissioned the world's largest LC3 production line in 2024 with 2 million tonnes annual capacity. The Indian Green Building Council reported that LC3-based concrete met structural performance requirements across 47 pilot buildings without cost premiums exceeding 3%.

LafargeHolcim's ECOPact product line, offering 30-100% CO2 reduction versus standard concrete, reached 15% of total sales in 2025 and is available in 34 countries including Mexico, Brazil, South Africa, and the Philippines. Hoffman Green Cement Technologies in France produces a clinker-free cement using alkaline activation, achieving 80% lower carbon intensity, and is licensing the technology for plants in Senegal and Morocco.

Mass Timber and Engineered Wood Products

Cross-laminated timber (CLT), glued laminated timber (glulam), and laminated veneer lumber (LVL) are experiencing rapid adoption as structural alternatives to steel and concrete in mid-rise construction. The global CLT market grew at 14% CAGR between 2020 and 2025, with emerging market production capacity expanding significantly. Chile's Arauco opened Latin America's first industrial-scale CLT plant in 2023 with 60,000 cubic meter annual capacity. Indonesia's Kayu Lapis Group launched Southeast Asia's first CLT facility in 2024, sourcing certified plantation timber.

The embodied carbon advantage is substantial: mass timber structures typically embody 300-500 kgCO2e/m2 compared to 650-900 kgCO2e/m2 for equivalent reinforced concrete designs, a 40-55% reduction. Additionally, biogenic carbon stored in timber products provides temporary carbon sequestration of approximately 700-900 kgCO2 per cubic meter of wood, though accounting treatment varies by standard and remains debated.

Regulatory enablement is expanding. India's National Building Code revision in 2025 included provisions for engineered wood in buildings up to 8 stories. South Africa's SANS 10163 update permits mass timber structural systems. Kenya's building code amendment in 2024 allows CLT construction up to 6 stories in seismic zone 1 areas. These code changes are essential for procurement teams, as specifying mass timber requires explicit regulatory permission in most jurisdictions.

Green Steel and Low-Carbon Metals

Steel embodied carbon varies dramatically by production route: blast furnace/basic oxygen furnace (BF-BOF) steel produces 1.8-2.2 tonnes CO2 per tonne of steel, while electric arc furnace (EAF) steel using scrap and renewable electricity achieves 0.3-0.6 tonnes CO2 per tonne. The proliferation of renewable energy in emerging markets is enabling low-carbon EAF production in regions previously dependent on imported BF-BOF steel.

India, the world's second-largest steel producer, has seen its EAF share increase from 27% to 35% between 2020 and 2025, driven by both scrap availability and the cost competitiveness of solar-powered arc furnaces. Tata Steel's Kalinganagar facility commissioned a hydrogen-ready EAF in 2025 with 3 million tonne annual capacity. JSW Steel committed to 42% carbon intensity reduction by 2030 using a combination of EAF expansion, scrap optimization, and green hydrogen injection.

In construction procurement, specifying steel by production route and carbon intensity rather than generic grade represents the single highest-impact procurement decision for structural steel frames. The difference between high-carbon BF-BOF steel and low-carbon EAF steel can represent 30-50% of a building's total embodied carbon for steel-framed structures. EPDs at the product level, rather than industry averages, are essential for capturing this variation.

Circular Construction and Material Reuse

The reuse of structural components, reclaimed concrete aggregate, and salvaged materials is emerging as a significant embodied carbon reduction pathway, particularly in markets with existing building stock reaching end of life. Demolition waste represents approximately 30-40% of total solid waste in rapidly urbanizing emerging markets, yet less than 15% is currently recycled into construction applications.

Brazil's CONAMA Resolution 307 mandates recycling of construction and demolition waste for public projects, driving development of recycled aggregate concrete. Votorantim Cimentos' Reverta platform now processes 1.2 million tonnes of construction waste annually into recycled aggregates meeting structural concrete specifications. South Africa's GBCSA Green Star rating system awards credits for specified levels of recycled content, incentivizing procurement of reclaimed materials.

Design for Disassembly (DfD) represents the forward-looking edge of this subsegment. Buildings designed with reversible connections and standardized components enable future material recovery at end of life. The approach requires upfront design investment but can reduce lifecycle embodied carbon by 15-25% when material reuse is accounted for in module D calculations. Arup's circular economy advisory practice has completed DfD frameworks for projects in India, Nigeria, and Colombia.

Digital Tools for Embodied Carbon Assessment

The proliferation of digital tools enabling real-time embodied carbon calculation during design and procurement has removed one of the key barriers to action: the complexity and cost of whole-life carbon assessment. One Click LCA processes over 25,000 building assessments annually across 170 countries and integrates with major BIM platforms (Revit, ArchiCAD). The Carbon Leadership Forum's EC3 tool provides free, open-access comparison of over 100,000 EPDs for procurement teams.

Emerging market adoption is accelerating. The Indian Institute of Technology Madras partnered with One Click LCA to develop India-specific embodied carbon databases covering 850 locally produced materials. Brazil's CAU (Council of Architecture and Urbanism) integrated embodied carbon calculation into its digital building permit platform in 2025. These tools enable procurement teams without specialized LCA expertise to make data-driven material substitution decisions during the design phase when the greatest carbon reductions are achievable at lowest cost.

Key Players

Material Producers

LafargeHolcim leads global low-carbon cement commercialization with ECOPact available in 34 countries and committed to 25% CO2 reduction per tonne of cementitious material by 2030.

Dalmia Cement (India) has achieved the lowest carbon intensity among major global cement producers at 463 kgCO2/tonne, driven by aggressive clinker substitution and LC3 adoption.

Stora Enso operates Europe's largest CLT production and is expanding licensing partnerships to enable mass timber manufacturing in emerging markets.

Technology and Tools

One Click LCA provides the most widely adopted lifecycle assessment platform for buildings, with databases covering 80,000+ construction products globally.

Arup leads consulting on circular construction and DfD, with embodied carbon advisory services operational across Africa, South Asia, and Latin America.

CarbonCure Technologies injects recycled CO2 into fresh concrete during mixing, achieving 5-7% cement reduction while improving compressive strength, now deployed in 700+ concrete plants across 30 countries.

Investors and Funders

IFC (International Finance Corporation) has committed $2 billion to green building investment in emerging markets, with embodied carbon reduction as a qualification criterion for EDGE-certified projects.

Breakthrough Energy Ventures has invested in multiple low-carbon cement and steel ventures targeting emerging market deployment.

Climate Innovation Fund (Asian Development Bank) provides concessional finance for low-carbon construction material manufacturing in Southeast Asia.

Action Checklist

• Establish embodied carbon baselines for current procurement by requesting EPDs from existing material suppliers
• Integrate whole-life carbon assessment into project design briefs at concept stage when material substitution costs are lowest
• Specify maximum allowable carbon intensity thresholds for cement, steel, and aluminum in procurement contracts
• Evaluate mass timber structural systems for mid-rise projects (4-10 stories) where local building codes and supply chains permit
• Require product-specific EPDs rather than industry-average data for structural materials exceeding 10% of project embodied carbon
• Assess CBAM exposure for projects using imported cement, steel, or aluminum from non-EU production facilities
• Pilot construction waste recycling and recycled aggregate concrete on at least one project to build internal capability
• Deploy digital embodied carbon tools (One Click LCA or EC3) for design-phase material comparison across all new projects

FAQ

Q: What is the most cost-effective way to reduce embodied carbon in emerging market construction? A: Cement optimization delivers the highest impact at lowest cost. Specifying concrete with 30-40% clinker substitution using locally available SCMs (fly ash, slag, or calcined clay) can reduce structural embodied carbon by 25-35% with cost premiums typically below 3%. This approach requires no changes to construction practices, equipment, or workforce skills, making it the easiest intervention to deploy at scale.

Q: How do I compare materials when EPDs are not available from local suppliers? A: Use generic regional datasets as starting points (available through One Click LCA, ICE Database, or national EPD programs) while engaging suppliers to develop product-specific EPDs. The cost of producing an EPD ranges from $3,000-15,000, a minimal investment relative to material procurement budgets. Many national EPD programs offer subsidized rates for first-time participants. In the interim, specify that suppliers provide carbon intensity data based on production energy consumption and raw material inputs, even if formal EPDs are not yet available.

Q: Does mass timber construction cost more than conventional reinforced concrete? A: Current cost comparisons show mass timber at a 5-15% premium over reinforced concrete for mid-rise commercial and residential buildings in markets with established supply chains (Europe, North America, Chile, Australia). In emerging markets without local production, import costs can increase premiums to 20-40%. However, mass timber construction is typically 25-30% faster than concrete, and when schedule savings are monetized (reduced financing costs, earlier revenue), the total cost differential narrows to 0-8% in many project types. The cost premium is declining as production capacity scales and design standardization improves.

Q: How will CBAM affect construction material procurement in emerging markets? A: Starting in 2026, EU importers of cement, steel, and aluminum will pay a carbon price corresponding to the difference between the embedded emissions of imported products and the EU Emissions Trading System price (approximately EUR 65-85/tonne CO2 in early 2026). For emerging market exporters, this creates a direct financial incentive to reduce production carbon intensity. For procurement teams sourcing materials for projects with European financing or ownership, CBAM compliance documentation will become a standard procurement requirement. Indian cement exported to Europe, for example, could face CBAM costs of EUR 15-25 per tonne, significantly affecting landed cost competitiveness versus European producers.

Q: What role does recycled content play in reducing embodied carbon? A: Recycled steel (EAF route) reduces embodied carbon by 65-75% compared to virgin BF-BOF production. Recycled aluminum achieves 90-95% reduction versus primary smelting. Recycled concrete aggregate in non-structural applications reduces concrete embodied carbon by 10-20%. For procurement professionals, specifying minimum recycled content percentages for steel (recommend minimum 70% for reinforcing bar where EAF supply exists) and requesting documentation of scrap sourcing and production route provides immediate embodied carbon reduction without quality compromises.

Sources

• International Energy Agency. (2025). Global Status Report for Buildings and Construction 2025. Paris: IEA Publications.
• Global Alliance for Buildings and Construction. (2025). Embodied Carbon in Construction: Status and Pathways. Paris: GlobalABC/UNEP.
• Carbon Leadership Forum. (2025). EC3 Database Annual Report: EPD Trends and Embodied Carbon Benchmarks. Seattle: University of Washington.
• Scrivener, K. et al. (2024). LC3 Technology: Global Deployment Status and Performance Data. Lausanne: EPFL/LC3 Project.
• World Green Building Council. (2025). Advancing Net Zero Embodied Carbon: Global Policy and Market Review. London: WorldGBC.
• International Finance Corporation. (2025). Green Building Market Intelligence: Emerging Markets Update. Washington, DC: IFC/World Bank Group.
• United Nations Environment Programme. (2025). Building Materials and the Climate: Constructing a New Future. Nairobi: UNEP.