Joe Atkinson explains how the LILAC cohousing community came together and why their project is affordable for everyone.

Piers Taylor from Invisible Studio Architects explains what a build system is, why you would use one over another and whether any are preferable when it comes to creating low energy houses.

Steve Mouzon from Original Green helps answer a question (from Frank Wiley) about what houses we should be building in areas that are prone to hurricanes or other extreme weather.

Mike Coe lives in an autonomous house with his partner Lizzie Stoodley. He shares the story behind this self-build project and why it's ultimately left them with a deeper connection to their environment.

Mark Tiramani, the self-builder behind the UK's first certified Passivhaus, shares his experience of building Y Foel and how this got him interested in the Passive House Planning Package (PHPP). He explains what PHPP is and why it's a valuable tool.

Lisa Ann Pasquale from Six Cylinder Limited explains what thermal imaging is and how it can be used in quality assuring the construction of low energy buildings.

In this special episode Ben Adam-Smith explains why he wants to crowd-fund a documentary about airtightness, what it will entail and how you can help.

David Snell, author of Building Your Own Home, shares advice on acquiring land, building up a skilled and reliable team, and keeping contracts simple. He is currently building his 14th house!

David Rudlin from Urbed explains what collective custom build is and why it would be beneficial to build more houses this way.

Sarah Lonsdale, an eco columnist for The Telegraph, shares a list of 30 home improvements she has made to reduce energy bills, and save energy and water. Ultimately Sarah would like to build a new home (such as a Huf Haus or Passivhaus) but in the meantime she explains the benefits of incremental upgrades.