Dr. Conn Yuen founded CO₂nnsulting in 2008.  Dr. Yuen passionately believes in providing clients aiming to build sustainable developments with bespoke state-of-the-art consulting services.

CO₂nnsulting is a proud participant of the CIBSE CARBON/OFF 2009– 100 Hours of Carbon Clean Up campaign. The campaign aims to raise awareness of actions organisations can take to reduce the carbon emissions of their buildings and significantly reduce the cost of their  bills. The 100 hours of Carbon Clean Up campaign is to inspire and enable industry to take action to cut their buildings carbon emissions by providing businesses with the tools to make carbon savings.

At CO₂nnsulting, we practise that we preach. CO₂nnsulting has been a carbon zero organisation since inception. The consolidation of the CO₂nnsulting office has achieved LEED®GOLD in 2013. CO₂nnsulting is the first boutique consultancy to achieve Planet Positive, CO₂nnsulting is a member of USGBC,, IWBI and BEAM Society limited.