What is needed to decarbonise our housing stock for home owners or large property managing landlords? What is the opportunity to improve energy efficiency of one home or a portfolio of 10,000 unique rental homes. Developing existing mythologies, combined with technology and automation gives residential property owners the range of options to retrofit their homes. Using a simple software platform with tools to help them create a basic 3D model of their home. They can use this model to test various retrofit options, get instant results and make informed investment decisions to help fight climate change.