Beyond Carbon Associates Ltd

Beyond Carbon is a Passivhaus and low-energy design consultancy with offices in Bicester, London and Bristol. We are architectural physicists, engineers and designers working towards one goal: making low-energy, healthy buildings the norm in the UK. Since we were founded in 2022 we have grown quickly. In September 2026 we merged with Delta Q, a Passivhaus consultancy established in 2010, making us one of the largest Passivhaus consultancies in the UK. Nine of our team are Certified Passivhaus Consultants, and our in-house Accredited Passivhaus Certifier supports projects from concept design to final sign-off. We work across new build and retrofit, including multi-residential housing, student accommodation, education, offices, laboratories and heritage buildings. Our services include: Passivhaus consultancy and design, from feasibility to completion PHPP and DesignPH energy modelling Thermal bridge, U-value and Psi-value calculations MEP strategy guidance for low-energy buildings Buildability and cost optimisation Design review and design team support Certification to Passivhaus Classic, Plus, Premium, EnerPHit and PHI Low Energy Building standards AECB Building Standard design and support Retrofit and EnerPHit, including heritage buildings and estate decarbonisation SAP modelling and compliance On-site testing, including in-situ U-value measurement and airtightness scanning