In updating buildings from old we utilise varying degrees of retrofit, such as retention of just the structural frame through to the light touch refurbishment of listed buildings.  This panel will discuss the architectural possibilities of re-using buildings and the watchpoints and recommendations set out in ‘Delivering Net Zero in Use – a guide for architects’. This research project carried out by AHMM and UCL sets out processes and key lessons to support the delivery of Net Zero Carbon buildings from our existing assets.