I have been a member of the AECB for a number of years and was one of the second group to undertake the AECB CarbonLite Retrofit course in the UK. Currently we are renovating a 15th Century mud hut (Cob/adobe & rubble stone) with later additions to Passivhaus standards, while adding an 80m² single storey extension. We also received planning for a second project for a new build house designed to Passivhaus standards by Gale & Snowden in Exeter using ICF as the build method. I am passionate about Passivhaus retrofit, especially with regards to cost effective retrofit solutions & building methods.