https://www.manula.com/manuals/living-future/living-building-challenge-4-0/1/en/topic/previous-versions-of-lbc-4-0-petal-handbooks
LBC 4.0 Petal Handbooks Published April 2025 Published October 2024 Published July 8, 2024 Published May 8, 2024 Published July 7, 2023 Published April 3,...
living building challengeprevious versions