• LETI Climate Emergency Retrofit Guide
• Historic England Energy Efficiency and Retrofit Guidance
• Passive House Institute (PHI):
• Association for Environment Conscious Building (AECB):
• Cambridge Carbon Footprint’s Open Eco Homes Tours and Case Studies
https://cambridgecarbonfootprint.org/what-we-do/open-eco-homes/
• Cambridge Retrofit Hub
https://www.cambridgeretrofithub.org/
• Ecological Building Systems:
https://www.ecologicalbuildingsystems.com/blog
• Responsible Retrofit
https://responsible-retrofit.org/greenwheel/
• Passive House Benefits Guide
• Keystone Blog:
https://www.keystonead.co.uk/journal
• For those interested in how many cats are required to heat a Passive House