Living Building Challenge 4.1 Program Manual
April 2025
  • April 2025
Table of Contents
Living Building Challenge 4.1 Program Manual
  • April 2025
    • Living Building Challenge 4.1 Program Manual — April 2025
GrabGrab
GrabGrab
  • April 2025
  • Copyright
  • Acknowledgments
  • Executive Summary
  • Building a Living Future
  • Introduction
    • Introduction to the Living Building Challenge 4.1
      • How the Living Building Challenge Works
    • How to Use the Program Manual
    • Additional Tools and Support
    • Other ILFI Programs
  • Cross-Petal Compliance Details
    • Project Boundary and Floor Area
    • Living Transect
    • Typology
    • Scale Jumping and Handprinting
  • Place Petal Compliance Details
    • I01 – Ecology of Place (Core Imperative)
      • Intent + Requirements
      • Clarifications
        • Ecology of Place Clarifications
        • Ecological Clarifications
        • Social and Cultural Clarifications
        • General Clarifications
      • Exceptions
      • Calculations
      • Scale Jumping
      • Documentation Requirements
      • Case Studies
      • Resources
    • I02 – Urban Agriculture
      • Intent + Requirements
      • Clarifications
        • Requirements Clarifications
        • General Clarifications
      • Exceptions
      • Calculations
      • Scale Jumping
      • Documentation Requirements
      • Case Studies
      • Resources
    • I03 – Habitat Exchange
      • Intent + Requirements
      • Clarifications
      • Exceptions
      • Calculations
      • Scale Jumping
      • Documentation Requirements
      • Case Studies
      • Resources
    • I04 – Human-Scaled Living (Core Imperative)
      • Intent + Requirements
      • Clarifications
      • Exceptions
      • Calculations
      • Scale Jumping
      • Documentation Requirements
      • Case Studies
      • Resources
  • Water Petal Compliance Details
    • I05 – Responsible Water Use (Core Imperative)
      • Intent + Requirements
      • Clarifications
        • Potable Water Reduction Clarifications
        • Irrigation Clarifications
        • Stormwater Clarifications
        • Water Handprinting for Affordable Housing Clarifications
      • Exceptions
      • Calculations
      • Scale Jumping
      • Documentation Requirements
      • Case Studies
      • Resources
    • I06 – Net Positive Water
      • Intent + Requirements
      • Clarifications
      • Exceptions
      • Calculations
      • Scale Jumping
      • Documentation Requirements
      • Case Studies
      • Resources
  • Energy Petal Compliance Details
    • I07 – Energy + Carbon Reduction (Core Imperative)
      • Intent + Requirements
      • Clarifications
        • Embodied Carbon Calculation Clarifications
        • Embodied Carbon Reduction Clarifications
        • Energy Baseline Clarifications
        • Energy Use Clarifications
        • Performance Period Clarifications
        • Renewable Energy Clarifications
        • Zero Ready Clarifications
      • Exceptions
      • Calculations
      • Scale Jumping
      • Documentation Requirements
      • Case Studies
      • Resources
    • I08 – Net Positive Carbon
      • Intent + Requirements
      • Clarifications
        • Embodied Carbon Offset Clarifications
        • Embodied Carbon Threshold Clarifications
        • Energy Budget Clarifications
        • Energy Use Clarifications
        • Performance Period Clarifications
        • Renewable Energy Clarifications
        • Resiliency Strategy
        • Sub-metering Clarifications
      • Exceptions
      • Calculations
      • Scale Jumping
      • Documentation Requirements
      • Case Studies
      • Resources
  • Health and Happiness Petal Compliance Details
    • I09 – Healthy Interior Environment (Core Imperative)
      • Intent + Requirements
      • Clarifications
      • Exceptions
      • Calculations
      • Scale Jumping
      • Documentation Requirements
      • Case Studies
      • Resources
    • I10 – Healthy Interior Performance
      • Intent + Requirements
      • Clarifications
        • IAQ Testing Clarifications
        • CDPH Clarifications
        • General Clarifications
      • Exceptions
      • Calculations
      • Scale Jumping
      • Documentation Requirements
      • Case Studies
      • Resources
    • I11 – Access to Nature
      • Intent + Requirements
      • Clarifications
      • Exceptions
      • Calculations
      • Scale Jumping
      • Documentation Requirements
      • Case Studies
      • Resources
  • Materials Petal Compliance Details
    • I12 – Responsible Materials (Core Imperative)
      • Intent + Requirements
      • Clarifications
        • Declare Product Clarifications
        • Living Product Challenge Clarifications
        • Materials Petal Scope Clarifications
        • Sourcing Distance Clarifications
        • Volatile Organic Compound (VOC) Content Clarifications
        • Waste Diversion Clarifications
        • Wood Sourcing Clarifications
      • Exceptions
      • Calculations
      • Scale Jumping
      • Documentation Requirements
      • Case Studies
      • Resources
    • I13 – Red List
      • Intent + Requirements
      • Clarifications
        • Accepted Documentation
        • Red List Project Vetting Scope
        • Volatile Organic Compounds (VOCs)
        • LBC Watch List and Red List Update Process
        • Chemical Abstract Service Registry Numbers (CASRNs) and Red List Classes
        • In Situ Materials
        • Miscellaneous Hardware and Accessory Products
        • Recycled, Salvaged, and Surplus Materials
        • Small Electrical Components
        • Special CASRN Reporting Requirements
        • Unintentional Trace Amounts
      • Exceptions
        • Exception Evaluation
        • General Exceptions
          • Specific Exceptions by Chemical Class
        • Calculations
        • Scale Jumping
        • Documentation Requirements
        • Case Studies
        • Resources
      • I14 – Responsible Sourcing
        • Intent + Requirements
        • Clarifications
          • Declare Product Clarifications
          • Forest Stewardship Council (FSC) Project Certification Clarifications
          • Industry Advocacy
        • Exceptions
        • Calculations
        • Scale Jumping
        • Documentation Requirements
        • Case Studies
        • Resources
      • I15 – Living Economy Sourcing
        • Intent + Requirements
        • Clarifications
        • Exceptions
        • Calculations
        • Scale Jumping
        • Documentation Requirements
        • Case Studies
        • Resources
      • I16 – Net Positive Waste
        • Intent + Requirements
        • Clarifications
        • Exceptions
        • Calculations
        • Scale Jumping
        • Documentation Requirements
        • Case Studies
        • Resources
    • Equity Petal Compliance Details
      • I17 – Universal Access (Core Imperative)
        • Intent + Requirements
        • Clarifications
        • Exceptions
        • Scale Jumping
        • Calculations
        • Documentation Requirements
        • Case Studies
        • Resources
      • I18 – Inclusion (Core Imperative)
        • Intent + Requirements
        • Clarifications
        • Exceptions
        • Calculations
        • Scale Jumping
        • Documentation Requirements
        • Case Studies
        • Resources
    • Beauty Petal Compliance Details
      • I19 – Beauty + Biophilia (Core Imperative)
        • Intent + Requirements
        • Clarifications
        • Exceptions
        • Calculations
        • Scale Jumping
        • Documentation Requirements
        • Case Studies
        • Resources
      • I20 – Education + Inspiration (Core Imperative)
        • Intent + Requirements
        • Clarifications
        • Exceptions
        • Calculations
        • Scale Jumping
        • Documentation Requirements
        • Case Studies
        • Resources
    • 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
        • Changes to Cross-Petal Compliance Details (Q1 25)
        • Changes to the Place Petal (Q1 25)
        • Changes to the Health and Happiness Petal (Q1 25)
        • Changes to the Materials Petal (Q1 25)
        • Changes to the Energy Petal (Q1 25)
        • Changes to Approved Regional Equivalencies (Q1 25)
      • October 2024 Updates
        • Changes to Cross-Petal Compliance Details (Q3 24)
        • Changes to the Place Petal (Q3 24)
        • Changes to the Water Petal (Q3 24)
        • Changes to the Energy Petal (Q3 24)
        • Changes to the Health + Happiness Petal (Q3 24)
        • Changes to the Materials Petal (Q3 24)
        • Changes to the Equity Petal (Q3 24)
        • Changes to Approved Regional Equivalencies (Q3 24)
        • Changes to the Glossary (Q3 24)
      • July 2024 Updates
        • Changes to Cross-Petal Compliance Details (Q2 24)
        • Changes to the Water Petal (Q2 24)
        • Changes to the Energy Petal (Q2 24)
        • Changes to the Health + Happiness Petal (Q2 24)
        • Changes to the Materials Petal (Q2 24)
        • Changes to the Equity Petal (Q2 24)
        • Changes to Approved Regional Equivalencies (Q2 24)
      • Previous Versions of the Manuals
    Download as PDF

    Previous Versions of the Manuals

    LBC 4.1 Program Manuals

    Published October 2024
    Published July 8, 2024
    Published April 1, 2024

    Changes to Approved Regional Equivalencies (Q2 24)
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