Evolución del mercado: Tendencias actuales y futuras

The European sustainable construction market has undergone accelerated expansion, positioning it as the fastest-growing segment of the building sector. According to the European Construction Market Forecast report by Euroconstruct (2024), the green building market volume in the EU-27 reached 420,000 million EUR in 2023, representing 38% of total building output (1.1 trillion EUR). The compound annual growth rate (CAGR) of the sustainable segment between 2018 and 2023 was 12.3%, compared to 3.2% for conventional building. By country, Germany leads with 98,000 million EUR (23% of the European market), followed by France (72,000 million, 17%), Italy (56,000 million, 13%), and Spain (38,000 million, 9%). In Spain, the energy retrofit market grew by 28% in 2023 relative to 2022, driven by PRTR funds that effectively mobilised 2,800 million EUR for building renovation actions.

The penetration of sustainability certifications reflects market maturity. The cumulative number of BREEAM certificates in Spain surpassed 125,000 by the end of 2023, with 34% growth over 2022 (BREEAM Spain, 2024). LEED certificates registered in the Iberian Peninsula reached 1,420 certified projects and 3,800 in progress (USGBC, 2024). Passivhaus certifications recorded the highest relative growth: 184 new certifications in Spain in 2023, 42% more than in 2022, bringing the total to 680 certified buildings (PEP, 2024). The Spanish VERDE certification from GBCe certified 312 new projects in 2023 (GBCe, 2024). The total floor area certified as sustainable in Spain exceeds 28 million m2, yet represents only 4.8% of the total building stock (585 million m2, according to the 2023 Cadastre), indicating extraordinary growth potential.

The regulatory trajectory charts a clear path from nearly zero-energy buildings (nZEB) to zero-emission buildings (ZEB). The recast EPBD Directive (2024/1275) establishes that all new buildings must be zero-emission from 1 January 2030 (public buildings from 2028), defined as buildings with very low energy demand, fully covered by renewable sources and with zero operational carbon emissions from fossil fuels. In Spain, transposition will require an update to the CTE DB-HE before 2027, with anticipated heating demand values of 15-25 kWh/m2/year (compared to the current 40-65 depending on climate zone) and the effective ban on gas boilers in new buildings. The incremental cost of a ZEB compared to an nZEB is estimated at 3-7% of the material execution budget (BPIE, 2024), concentrated in the mandatory photovoltaic installation (3-5 kWp/dwelling), the high-efficiency heat pump (COP of at least 4.0), and the strengthening of envelope insulation.

The market is already anticipating this transition. Heat pumps have for the first time outsold gas boilers in Europe: 3.0 million units sold in 2023 versus 2.6 million gas boilers (EHPA, 2024). In Spain, heat pump sales grew by 21% in 2023, reaching 285,000 units, of which 68% are air-to-water systems (AFEC, 2024). Residential photovoltaic self-consumption experienced 108% growth in new installations in 2023 relative to 2022, with 342,000 new installations and a cumulative capacity of 5.8 GW (UNEF, 2024). Photovoltaic module prices fell to 0.12-0.18 EUR/Wp in 2024, 42% lower than in 2022, reducing the cost of a 3 kWp residential installation to 3,500-5,000 EUR without batteries and 6,000-9,000 EUR with a 5 kWh battery. These cost trends make integrated renewable generation an economically neutral or positive building component, eliminating the overcost barrier that historically hindered its adoption.

While current regulation focuses on operational carbon, the next market frontier is the embodied carbon of construction materials and processes. The recast EPBD will require from 2030 onwards the declaration of Global Warming Potential (GWP) across the life cycle for all new buildings exceeding 1,000 m2, with maximum limits to be defined by each Member State by 2027. Countries such as Denmark (limit of 12 kg CO2eq/m2/year since 2023 for buildings over 1,000 m2), France (RE2020: limit of 640 kg CO2eq/m2 for dwellings over a 50-year life cycle), and the Netherlands (MPG: limit of 0.8 EUR/m2/year in environmental cost) have anticipated this regulation. A conventional reinforced concrete residential building in Spain generates between 400 and 600 kg CO2eq/m2 of embodied carbon, whereas an equivalent solution in CLT (Cross Laminated Timber) reduces this figure to 150-280 kg CO2eq/m2, including the biogenic carbon storage effect (IStructE, 2022).

The industrialisation of sustainable construction is emerging as a response to the simultaneous demands of decarbonisation, quality, schedule, and cost. Off-site manufacturing reduces construction waste by 70-80%, execution time by 40-60%, and water consumption by 50-70% relative to traditional construction (McKinsey Global Institute, 2023). In Spain, the market share of industrialised construction rose from 1.2% in 2019 to 4.8% in 2023, with a forecast of 12% by 2028 (Observatorio de la Construccion Industrializada, 2024). Companies such as Grupo Avintia (production capacity of 3,000 dwellings/year at its Teruel factory), Cevisa, and Modulab have invested a combined total of more than 150 million EUR in industrialised production lines between 2021 and 2024. The overcost of industrialised housing compared to traditional has fallen from 15-20% in 2019 to 3-8% in 2024, with cost parity expected by 2026-2027 for developments exceeding 50 units (KPMG, 2024). The convergence of industrialisation, low-carbon materials, and BIM-optimised design defines the sector's production paradigm for the coming decade.

Market projections point to a structural transformation of the European building sector over the next decade. The Global Green Building Market Outlook 2035 report by Allied Market Research (2024) projects a global sustainable construction market of 857,000 million USD by 2030 and 1.4 trillion USD by 2035, with a CAGR of 10.8%. In Europe, the share of sustainable building within total output will rise from the current 38% to 55% by 2030 and 72% by 2035, driven by EPBD MEPS, European taxonomy requirements, and growing demand from institutional ESG investors. The fastest-growing segments will be deep energy retrofit (CAGR of 18%, mobilising 180,000 million EUR annually in the EU by 2030), timber construction (CAGR of 22%, reaching a 15% share of new residential building), and energy-plus buildings (a market of 12,000 million EUR by 2030).

For the Spanish market, strategic opportunities are concentrated in three vectors. First, retrofit of the existing stock: with 5.5 million dwellings built before 1980 without thermal insulation and a PNIEC target to retrofit 1.2 million dwellings by 2030, the required investment volume exceeds 42,000 million EUR (MITMA, 2023). Second, building electrification: replacing the 8.2 million gas boilers installed in Spain (Sedigas, 2023) with heat pumps represents a market of 28,000-45,000 million EUR in equipment and installation over the next 15 years. Third, embodied carbon management: mandatory Environmental Product Declarations (EPD) and future GWP limits will create a consultancy, LCA calculation software, and low-carbon materials market estimated at 2,800 million EUR annually in Spain by 2030 (GBCe, 2024). The confluence of regulatory pressure, financial incentives, consumer demand, and technological maturity makes the 2025-2035 period the greatest market opportunity in the history of the Spanish building sector.