This blog was updated on 09/06/2026
The construction industry plays a significant role in global carbon emissions, contributing substantially to climate change. Research from the United Nations Environment Programme (UNEP) and the Global Alliance for Buildings and Construction indicates that the buildings and construction sector is responsible for approximately 34–37% of global energy- and process-related CO₂ emissions, arising from both the operational energy used to power, heat and cool buildings and the embodied carbon associated with construction materials and building processes. To address this challenge, the construction industry is adopting a range of strategies to reduce both operational and embodied carbon emissions. These include the use of low-carbon and circular building materials, implementation of energy-efficient construction methods, electrification of building systems and the adoption of sustainable design principles. Whole-life carbon assessments are increasingly being used to measure and minimise environmental impacts throughout a building's lifecycle, while policymakers are introducing stricter regulations, reporting requirements and performance standards to support decarbonisation. By focusing on these areas, alongside resource efficiency and the reuse of existing assets, the construction sector can make substantial progress towards sustainability and contribute to global net zero ambitions.
The built environment plays a significant role in global greenhouse gas emissions. According to the United Nations Environment Programme (UNEP) and the Global Alliance for Buildings and Construction, the buildings and construction sector accounts for approximately 34–37% of global energy- and process-related CO₂ emissions. These emissions arise from both the operation of buildings and the materials and processes used to construct them.
The construction industry's carbon footprint can be divided into two key categories: operational carbon and embodied carbon. Operational carbon refers to emissions generated through heating, cooling, lighting and powering buildings throughout their use, while embodied carbon encompasses emissions associated with material extraction, manufacturing, transportation, construction, maintenance and end-of-life disposal.
Achieving net-zero targets requires addressing both sources of emissions. While considerable progress has been made in improving operational efficiency through better insulation, low-carbon technologies and renewable energy integration, embodied carbon is becoming an increasingly important focus. As buildings become more energy-efficient, embodied emissions can account for a larger proportion of a project's overall carbon impact.
In the UK, where the government has committed to achieving net zero greenhouse gas emissions by 2050, reducing emissions across the built environment remains a key priority.
Embodied carbon is responsible for a significant share of the construction sector's environmental impact and is estimated to contribute around 11% of global carbon emissions. Unlike operational emissions, embodied carbon is largely locked into a building before it becomes operational, making early-stage design decisions particularly important.
As awareness of whole-life carbon impacts grows, developers, designers and contractors are increasingly seeking ways to minimise embodied emissions through material selection, efficient structural design and circular economy principles.
This shift is reflected in leading sustainability frameworks and certification schemes, including BREEAM and LEED, which encourage project teams to measure, assess and reduce environmental impacts throughout a building's lifecycle.
Whole Life Carbon Assessments (WLCAs) provide a comprehensive evaluation of a building's carbon emissions across its entire lifecycle, from raw material extraction and construction through to operation, maintenance, refurbishment and eventual demolition.
By identifying carbon hotspots throughout a project's lifecycle, WLCAs enable organisations to make informed decisions that reduce environmental impacts while supporting sustainability objectives. These assessments can influence material choices, building design, construction methods and operational strategies, helping project teams deliver lower-carbon developments.
Whole-life carbon assessment is becoming increasingly important across the UK construction sector as clients, investors and regulators place greater emphasis on measurable carbon reductions and transparent reporting.
For organisations pursuing sustainability certifications such as BREEAM, WLCAs can provide valuable evidence of environmental performance while supporting broader decarbonisation goals. Need assistance in achieving BREEAM Compliance, view our service page for more information.
Learn more: Whole Lifecycle Carbon Assessment Aids Sustainability in Construction
The UK construction industry is operating within an evolving regulatory landscape designed to support national carbon reduction targets and the transition to net zero.
Recent updates to Building Regulations and the forthcoming Future Homes Standard aim to improve the energy performance of new buildings and significantly reduce operational emissions. The Future Homes Standard is expected to ensure that new homes produce substantially lower operational carbon emissions than those built under previous standards.
Alongside these operational improvements, there is growing industry and political focus on embodied carbon. Although the UK does not yet have mandatory national limits on embodied carbon emissions in buildings, momentum is increasing for greater transparency, reporting and whole-life carbon assessment requirements.
Industry bodies, local authorities and professional organisations are increasingly advocating for embodied carbon measurement to become standard practice, helping drive more informed design and procurement decisions across the built environment sector.
Learn more: Understanding the Latest SBTi Buildings Sector Guidance
Reducing carbon emissions in construction requires action throughout the entire project lifecycle. Key strategies include:
Architects and designers can reduce operational emissions through passive design principles, high-performance building envelopes, efficient systems and low-energy building strategies that minimise heating and cooling demands.
The use of recycled, renewable and lower-carbon materials can significantly reduce embodied emissions. Examples include responsibly sourced timber, recycled steel, low-carbon concrete alternatives and reclaimed construction materials.
Designing buildings to use fewer materials, maximise reuse opportunities and facilitate future adaptation or disassembly can help reduce waste and minimise carbon impacts throughout a building's lifecycle.
On-site renewable technologies such as solar PV systems can reduce operational emissions and support long-term energy resilience.
Off-site manufacturing, modular construction and prefabrication can improve efficiency, reduce material waste and support more consistent environmental performance. Check out our case study with C-biotech and their Carbon Negative Insulations Panels.
Conducting Whole Life Carbon Assessments enables organisations to identify opportunities for emissions reductions throughout the design, construction and operational phases of a project.
Where emissions cannot be eliminated, high-quality carbon offsetting may play a supplementary role. However, industry best practice prioritises avoiding and reducing emissions before considering offsets as a final measure.
The construction industry's transition to net zero is accelerating, driven by increasing awareness of whole-life carbon impacts, advances in low-carbon materials and growing expectations from regulators, investors and clients.
While improving operational efficiency remains important, reducing embodied carbon is now recognised as one of the sector's most significant opportunities for emissions reduction. Through whole-life carbon assessments, circular economy principles, sustainable design and innovative construction methods, organisations can make meaningful progress towards lower-carbon developments.
As policy, industry standards and stakeholder expectations continue to evolve, businesses that proactively measure and reduce their carbon emissions will be better positioned to manage risk, demonstrate environmental leadership and contribute to a more sustainable built environment.