For reasons both practical and ideological, intentional community has long been a hotbed of eco-building activity—optimizing available resources while enriching participants’ relationships to self, others, and nature. In Communities #179, authors share their eco-building journeys, ranging from nearly-free stick-framed shelters to high-end green developments. They examine how to assess whether a building is actually “eco,” hard choices they’ve needed to make, the benefits and challenges of taking on eco-building projects in community, or of retrofitting vs. building new, and much more.