Hand sketching is still highly beneficial early in the architectural design process, enabling us to present the evolution of a project when generating the end product. In this case, we have showcased how this has been applied to the design for a contemporary rear extension based in Surrey and then transformed these hand sketches into developing a hyper-realistic 3D rendered model. This allowed us to present the proposed design to our client in further detail, enabling them to clearly understand how their home would look with its new extension, under natural lighting, and with accurately represented materials.