This week is all about the challenges of low-impact building in the sphere of self build with Tara Fraser, a chartered civil and structural engineer, and a director of Build Collective in Bristol. On the recommendation of former guest (and Tara's colleague) Beth Williams, we recently had a chat with her about a self-build project she worked on that should find itself into the pages of Passive House Plus magazine, and we thought it’d be interesting to explore it, and a few broader themes, for the podcast too.This is because in green building it's the self-builders who have been the pioneers, which intrigued us to wonder what lessons might be taken from the self-build experience that can be used by other builders.It’s pretty nerdy this one, but don't worry if you get lost on some of the detail, that's fine, it'll pass, and we return to the common ZAP themes pretty quickly.Notes from the showTara on LinkedInThe Build Collective websiteTara's colleague, Beth Williams, on the podcast last year**SOME SELF-PROMOTING CALLS TO ACTION**We don't actually earn anything from this, and it's quite a lot of work, so we have to promote the day jobs.Follow us on the Zero Ambitions LinkedIn pageJeff, Alex, and Dan about websites, branding, and communications - zap@eiux.agency; Everything is User ExperienceSubscribe and advertise with Passive House Plus (UK edition here too)Check Lloyd's Substack: Carbon UpfrontJoin ACANJoin the AECB Join the IGBCCheck out Her Own Space, the renovation and retrofit platform for women (but not in a patronizing way)**END OF SELF-PROMOTING CALLS TO ACTION**