Restoration of three student flats back into a single occupancy home with a lower ground floor flat let out to fund the ongoing retrofit measures. Retrofit: low temperature heating system with weather compensation controls. Resolving cold bridging and Draught proofing throughout using infra red camera, double glaze original window sashes and secondary glazing on the inside. Automated daily purge ventilation using new roof light over the staircase. Single room heat recovery units in bathrooms, kitchen and hallway. Initial goal to achieve band C with plans to achieve Net Zero before 2050. Retrofit measures ongoing as part of programmed maintenance and finances become available from flat rental.