Our team of more than 60 professionals, based in Oxford, London, Birmingham, Manchester and Cambridge brings ingenuity, elegant design, and enthusiasm to every project. As a leading building services consultancy, we specialise in mechanical and electrical engineering, sustainable building design, building physics, and lighting design. We are also recognised Passivhaus consultants, committed to delivering high-performance, energy-efficient buildings.

Our expertise extends to utilising advanced BIM (building information modelling) to streamline design and coordination processes, ensuring precision and innovation at every stage. We are an independent practice, wholly owned by our directors, all of whom take an active role in project delivery. Many of our team members are Chartered Engineers and proud members of the Chartered Institution of Building Services Engineers as well as other professional bodies, underscoring our dedication to professional excellence and cutting-edge solutions.

Our in-house Passivhaus Consultants and Designers are passionate about bringing this low energy and carbon standard to our projects. Our designs use the Passivhaus Planning Package (PHPP) to accurately predict energy consumption, comfort, and indoor air quality. Our experience allows us to support our clients through the Passivhaus design process through to certification while providing training and upskilling on the Standard along the way.

CBG’s expertise spans the Commercial, Education, Healthcare, Heritage, Hospitality, Public & Community, Residential and Transport sectors. From initial concepts to project completion, CBG offers comprehensive support, utilising the latest software and modelling tools, and best practices to optimise performance and efficiency. We pride ourselves on our collaborative approach, working closely with clients, stakeholders, and contractors to achieve outstanding results.