Living Building Challenge 4.0

April 2025
Copyright
Introduction
- Introduction to the Living Building Challenge 4.0
- How to Use the Program Manual
- Additional Tools and Support
- Other ILFI Programs
Place Petal
- I01 – Ecology of Place (C1)
- I02 – Urban Agriculture
- I03 – Habitat Exchange
- I04 – Human-Scaled Living (C2)
Water Petal
- I05 – Responsible Water Use (C3)
- I06 – Net Positive Water
Energy Petal
- I07 – Energy + Carbon Reduction (C4)
- I08 – Net Positive Carbon
Health and Happiness Petal
- I09 – Healthy Interior Environment (C5)
- I10 – Healthy Interior Performance
- I11 – Access to Nature
Materials Petal
- I12 – Responsible Materials (C6)
- I13 – Red List
- I14 – Responsible Sourcing
- I15 – Living Economy Sourcing
- I16 – Net Positive Waste
Equity Petal
- I17 – Universal Access (C7)
- I18 – Inclusion (C8)
Beauty Petal
- I19 – Beauty + Biophilia (C9)
- I20 – Education + Inspiration (C10)
Approved Regional Equivalencies
- Africa
- Asia
- Europe
- North America
- Oceania
ILFI Program Glossary
- A-G Terms
- H-P Terms
- Q-Z Terms
Summary of Changes
- April 2025 Updates
- October 2024 Updates
- July 2024 Updates
- May 2024 Updates
- Previous Versions of the Handbooks

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I11 – Access to Nature