Decarbonising New Construction: Inside the major carbon-focused upgrades of BREEAM V7
BREEAM New Construction Version 7 marks a significant evolution of the world’s longest-established green building standard, shifting from a prescriptive, checklist-driven framework to a performance-driven methodology centred on whole life outcomes. The update strengthens its treatment of whole life carbon, encouraging staged lifecycle assessment from concept through post-construction, and embeds more rigorous expectations around predictive operational energy, resilience, and biodiversity.
To help make clear the changes and additions introduced in BREEAM V7, we recently held an event in partnership with BCO Nextgen North, leading our attendees through the new design requirements. Since then, we have distilled some of the key themes that demonstrate the importance of BREEAM V7 in shaping project strategies going forward
Through criteria covering materials, energy, pollution, and health and wellbeing, BREEAM V7 aims to ensure that developments meet today’s sustainability expectations while also being adaptable to future climate and regulatory demands. In this context, V7’s strengthened materials category marks a significant progression, placing whole life carbon at the forefront of early design considerations.
What is being done about embodied carbon?
Embodied carbon is now widely recognised as a critical component of net zero pathways. With continuous improvements to operational performance, it represents an increasingly substantial share of a building’s lifetime emissions. BREEAM V7 responds to this shift by extensively restructuring the Mat 01 (Building Life Cycle Assessment) credit, placing it at the heart of design decision-making. By requiring lifecycle assessments to be mandatory across all design stages for projects targeting the highest ratings, the scheme encourages the industry to optimise designs from the outset, reducing embodied carbon and wider environmental impacts before they are locked in. This multi-stage approach supports a meaningful review and iterative improvements throughout the design.
Taking a holistic view of design impacts from the earliest possible stage significantly increases the likelihood of achieving meaningful carbon and resource efficiencies, alongside improvements across wider environmental indicators. Too often, design efficiencies and the procurement of more sustainable products cannot be incorporated because the decision is made too late or perceived as impractical. V7 reinforces the need for integrated decision-making from the very beginning, with all parties collaborating from the outset – a key component in delivering truly sustainable buildings.
In addition, V7 removes the previous requirement for life cycle assessments (LCAs) to be conducted using an IMPACT-compliant LCA tool. The previous reliance on these tools in earlier BREEAM schemes introduced several limitations that no longer align with current LCA best practice. The IMPACT database provided a standardised but largely fixed dataset, meaning results were consistent but often dependent on generic or outdated data, rather than reflecting rapidly evolving product-specific information. Critically, it lacked scope and granularity for complex elements such as building services, leading to incomplete or simplified assessments. By removing this dependency, V7 enables the use of more current, product specific and standardised data, improving accuracy and alignment with modern whole life carbon reporting requirements.
How can we improve energy performance?
On the other side of the whole life carbon equation is operational energy. In earlier versions of BREEAM, the focus sat largely on the design of the structure and core systems. Yet, as the industry has repeatedly seen, a building’s actual performance can diverge significantly from design intent due to a wide range of real‑world variables. BREEAM V7 addresses this gap through the introduction of Ene 02: Prediction of Operational Energy and Carbon, which requires modelling that more closely reflects real operational conditions and aligns with methodologies used in NABERS UK and BREEAM In‑Use.
V7 also strengthens minimum standards for operational energy performance, places greater emphasis on electrification, and introduces new credits for more dynamic building controls. These updates recognise the growing importance of real world performance data in informing design decisions, as well as the need to reduce reliance on fossil fuels to future‑proof assets.
The operational energy metrics in V7 directly support EU Taxonomy reporting and reinforce the shift toward performance‑based outcomes seen across national and international frameworks such as the UK Net Zero Carbon Buildings Standard, CRREM and the Science Based Targets initiative. This alignment helps simplify reporting and compliance for asset owners while encouraging more transparent, evidence driven design.
These principles also echo the direction of Cundall’s Zero Carbon Design 2030 commitment and our work supporting clients on credible net zero transition pathways. As the industry moves toward 2030, BREEAM V7 provides another step forward, helping project teams push the boundaries of what sustainable building performance can look like in practice.
