This document summarizes the experience and credentials of Architype and BDP in delivering net zero carbon and Passivhaus projects over the past 10 years. It provides examples of successful projects such as the Passivhaus-certified Enterprise Centre at the University of East Anglia and the MassivHaus-designed Harris Sutton Academy. It also outlines their approach to achieving net zero operational energy through high-performance building envelopes and low-carbon construction methods to minimize embodied carbon.