We make buildings work. Sustainably.
We are CBG, an ambitious practice of building services consultants, established in 1990. With offices located in Oxford, London, Manchester, and Cambridge, we are an independent and wholly-owned company, driven by a team of experienced Directors who take a hands-on approach to running projects. Our team has worked together for over 25 years, sharing a passion for delivering high-quality building services that benefit our clients and the environment.
We are a specialist Mechanical and Electrical Engineering practice, covering a wide range of services including Mechanical and Electrical Design, Building Physics, Lighting Design, Passivhaus, and Sustainable Consultancy. Our expertise is focused on maximising the efficiency of buildings, through the optimisation of fabric, combined with efficient mechanical and electrical design solutions.
Our Services
We provide a comprehensive range of services, from concept to completion, to clients across various sectors, including commercial, education, residential, heritage, public and community, and transport. Our services include:
Mechanical & Electrical Design: We design and deliver mechanical and electrical engineering solutions that are tailored to our clients' specific needs, ensuring maximum efficiency and effectiveness.
Building Physics: Our Building Physics team provides expert advice on the design and analysis of building envelopes, ensuring that buildings are optimal in terms of thermal performance, acoustic comfort, and daylighting.
Lighting Design: Our Lighting Design team combines scientific and artistic expertise to create innovative lighting solutions that enhance the quality of life for building occupants, while also reducing energy consumption.
Passivhaus: Our Passivhaus consultants provide expertise in the design and construction of energy-efficient, low-carbon buildings that benefit both occupants and the environment.
Sustainable Consultancy: Our Sustainable Consultancy team helps clients achieve their sustainability goals, by providing expert advice on building design, operation, and maintenance, as well as carbon reduction strategies.
Our Vision
At CBG, our vision is to be a leading consultancy delivering excellence in building physics and engineering for better buildings that benefit their occupants and the environment. We strive to achieve this by:
- Providing high-quality building services that meet our clients' needs and expectations
- Delivering sustainable solutions that reduce carbon emissions and improve building performance
- Fostering a culture of innovation, collaboration, and continuous improvement
- Strengthening our reputation as a trusted partner and expert in our field
Meet the Team
Our team of experienced Directors, Engineers, and Consultants has a deep understanding of the built environment, and a passion for delivering high-quality building services. Our team has worked together for over 25 years, sharing a commitment to excellence, professionalism, and sustainability.

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