Comparativa internacional de políticas públicas en construcción verde

The European Union leads green building regulation through the Energy Performance of Buildings Directive (EPBD), whose revision approved in March 2024 establishes that all new buildings must be zero-emission from 2028 for public buildings and 2030 for all others. The directive further requires Member States to phase out fossil-fuel boilers in new buildings by 2025 and to set renovation plans reaching an annual rate of 3% of the public building stock. At present, the average energy renovation rate in the EU stands at 1% per year, meaning the pace must triple with estimated investments of 275 billion euros annually through 2030, according to the European Commission.

National transpositions reveal significant differences. France, through the Réglementation Environnementale 2020 (RE2020), in force since January 2022, is the first country to introduce a maximum embodied carbon threshold for construction: 640 kgCO₂/m² for multifamily housing, which will be progressively lowered to 415 kgCO₂/m² by 2031. The Netherlands has applied since 2018 an environmental impact limit expressed in MPG (Milieu Prestatie Gebouwen), set at 0.8 euros of environmental cost per m²·year for residential buildings, which dropped to 0.5 €/m²·year in 2025. Germany supplements the requirements of the GEG (Gebäudeenergiegesetz) of 2020 with the BEG (Bundesförderung für effiziente Gebäude) program, which offers subsidies of up to 150,000 euros per dwelling for renovations achieving the Effizienzhaus 40 standard, with a cumulative budget of 16.7 billion euros between 2021 and 2023.

Singapore represents Asia's most ambitious model for public green building policies. Its Green Building Masterplan (2021) sets the goal of having 80% of the building stock achieve Green Mark certification by 2030, up from 43% reached in 2022 (equivalent to 58 million m² out of a total of 135 million). Mandatory Green Mark certification for all new construction exceeding 2,000 m² has been in place since 2008, and since 2014 it was extended to renovations over 2,000 m². The Super Low Energy (SLE) standard, introduced in 2018, requires energy consumption 60% below the reference code and had been achieved by 47 buildings by the end of 2023, including CapitaSpring (93,000 m², consumption of 80 kWh/m²·year).

China adds annually more than 600 million m² of built area under its green building standard, according to the Ministry of Housing and Urban-Rural Development (MOHURD, 2023). The Green Building Evaluation Standard (GB/T 50378-2019) classifies buildings into three stars, and the 14th Five-Year Plan (2021-2025) requires that 70% of new buildings in urban areas meet at least the one-star standard. Cumulative certified floor area reached 12.5 billion m² in 2022. Japan, through its CASBEE system and the Energy Efficiency Act revised in 2022, mandates from April 2025 that all new buildings meet energy standards equivalent to a 20% reduction over the 2016 code, with a ZEH (Zero Energy House) subsidy program of 1,000,000 yen (approximately 6,200 euros) per dwelling that has driven the construction of 260,000 net-zero energy homes between 2019 and 2023.

The United States features a decentralized model where green building policies depend primarily on states and cities. California, with its Title 24 (2022) energy code, has required since January 2023 that all new homes include photovoltaic systems and be battery-ready, with a maximum energy consumption that effectively turns homes into near-zero energy buildings. New York, through Local Law 97 (2019), imposes CO₂ emission caps on buildings larger than 2,322 m² with fines of 268 dollars per excess tonne per year, affecting 50,000 properties that account for 60% of the city's building emissions. At the federal level, the Inflation Reduction Act (2022) allocates 369 billion dollars to clean energy, including tax credits of up to 2,000 dollars for heat pump installation and 1,200 dollars for insulation in existing homes.

In South America, green building policies are at earlier stages. Colombia, a regional pioneer, approved in 2015 Resolution 549 from the Ministry of Housing, requiring 15-45% reductions in water and energy consumption for new buildings depending on the climate zone — the continent's first mandatory sustainable construction regulation. Brazil operates the Casa Azul seal from Caixa Económica Federal and is home to more than 1,800 certified LEED projects (second in the Southern Hemisphere after Australia). Chile implemented in 2023 a mandatory Housing Energy Rating (CEV) for sales and rentals, similar to the European energy certificate, and has the Sustainable Building Certification (CES) with 380 certified projects as of late 2023. Mexico, with the EcoCasa program funded by KfW and the IDB, has supported the construction of 45,000 sustainable homes since 2013 with subsidies of 1,500-4,500 dollars per unit.

The international comparison reveals three prevailing models of public policy for green building: the regulatory-prescriptive model (EU), the market-incentive model (U.S.), and the state-directed model (China, Singapore). Effectiveness measured in terms of emission reduction per m² built favors the regulatory model: EU countries reduced the energy intensity of their building stock by 1.8% annually between 2010 and 2022, compared with 1.2% for the U.S. and 0.9% for the global average, according to the International Energy Agency (IEA, 2023). Global public investment in green building reached 285 billion dollars in 2022, a 12% increase over 2021, led by China (98 billion), the U.S. (62 billion), and the EU (78 billion).

Converging trends for the coming decade point toward the mandatory inclusion of embodied carbon in building codes (already adopted by France, the Netherlands, Denmark, and Finland), the digitalization of building permits through mandatory Building Information Modelling (BIM) (in force in the UK, Singapore, and Germany for public projects), and the integration of the United Nations Sustainable Development Goals (SDGs) into national regulatory frameworks. The Global Alliance for Buildings and Construction (GlobalABC), coordinated by UNEP, projects that decarbonizing the building sector in line with the Paris Agreement will require a cumulative investment of 16 trillion dollars between 2020 and 2050, equivalent to the current GDP of the EU, distributed as 40% for energy renovation of the existing stock and 60% for zero-emission new construction.