In 2026, UK construction is moving beyond box-ticking sustainability and towards measurable performance.
With the UK Net Zero Carbon Buildings Standard setting clearer definitions of net zero, projects are pairing BREEAM Excellent with operational tools like NABERS UK to prove real in-use performance, not just design intent.
Hear what Joe Finding has to say!
In 2026, sustainability in the UK construction industry is continuing to be driven by increasingly robust climate targets, new regulatory frameworks, and performance-based measures. These extend beyond traditional environmental checkboxes such as meeting the Building Regs Part L, targeting BREEAM credits based on easiest to obtain, and opting for isolated sustainability features to dress a project as being environmentally friendly. Net zero carbon and tools like NABERS UK are central focal points as the UK construction industry sector responds to national and global climate commitments.
A core industry priority is meeting the UK’s net zero ambitions, embedded in both government policy and voluntary frameworks. The UK Net Zero Carbon Buildings Standard defines what constitutes a net zero building in the UK context ‘A net zero building is one that achieves very low carbon emissions in operation, minimises embodied carbon, and addresses any remaining emissions through verified, limited offsetting’
o achieve net zero performance in both new build and retrofit construction projects, the design from the outset will need to be focused on delivering net zero operation through high energy efficiency, on-site renewables, and advanced building systems. NABERS UK and BREEAM Excellent ratings are tools used on both new build and retrofit projects to demonstrate how operational performance is quantified and rewarded.
BREEAM Excellent is viewed as a strong baseline sustainability benchmark, however, it is primarily a design and specification-based rating, not necessarily a guarantee of actual in-use energy performance.
Leading projects now pair BREEAM Excellent with:
Verified operational performance tools, such as NABERS UK;
Whole-life carbon assessments;
Net zero carbon standards.
Whilst BREEAM Excellent signifies high sustainability intent and performance across multiple environmental areas, projects targeting high sustainability credentials through design, construction and operation should use it as part of a broader performance-led strategy rather than the sole measure of a building’s environmental credibility.
NABERS UK, the UK branch of the international performance benchmarking tool, measures actual energy performance, not just predicted outcomes. It uses a star-rating system for offices and commercial buildings, with 5 and 5.5 stars reflecting high-performance buildings. NABERS UK energy ratings can satisfy the UK Net Zero Carbon Buildings Standard operational energy requirements, establishing NABERS as a practical compliance route for net zero standards.
Alongside certification and standards, the UK construction industry’s sustainability focus is also evolving towards lifecycle approaches and embodied carbon reduction. Government guidance and industry practice are putting more emphasis on reducing carbon from material extraction, manufacturing, and construction phases, and using strategies like off-site prefabrication, reuse of materials, and rigorous lifecycle assessment.
Retrofit of existing buildings is also a key part of the UK’s sustainability agenda. Large developers are taking on major retrofit programmes to improve energy performance of older stock, aligning with broader climate goals, and responding to investor demand for asset resilience and lower running costs.
Overall, in 2026 the UK construction sector is shifting from ambition to measurable performance, with net zero carbon frameworks and tools like NABERS UK shaping design, delivery, and investment decisions. This reflects the evolution of sustainability practice where rigorous measurement, standards alignment, and operational performance take precedence over symbolic targets alone.
