# USGBC Updates LEED v4.1 ID+C Addenda with Energy Guidance Changes

## Description

USGBC issued updated addenda for LEED v4.1 Interior Design and Construction (ID+C) rating system on November 3, 2025. Updates include revisions to Energy and Atmosphere prerequisite Minimum Energy Performance guidance, including references to base building HVAC and service water-heating systems contribution guidance.

## Sources

- Official [LEED v4.1 Interior Design and Construction Addenda - USGBC](https://www.usgbc.org/sites/default/files/2025-11/LEED%20ID%2BC%20v4.1%20Addenda%20Table%20-%201st%20edition_11-03-2025.pdf)

## Key Findings

USGBC Updates LEED v4.1 ID+C Addenda with Energy Guidance Changes

> Issue Post Date 17 Behind the Intent; Further Explanation LT credit Surrounding Density and Diverse Uses Under Beta Update, after the first paragraph beginning "Updates clarify that surrounding existing density is measured within a [...] All Paths: Scope of DES equipment inclusion All downstream equipment must be included in the scope of EA Prerequisite Minimum Energy Performance and EA Credit Optimize Energy Performance.