855773644-LEED-v5-BD-C-Reference-Guide-Launch-Edition - Page 239

Extracted Content

• During construction, review submittals and substitutions for design deviations that impact the OPR, attend milestone meetings at 50% and 100% completion, and perform a sample review (minimum 10%) of completed contractor documentation for quality assurance/quality control. For envelope, include testing in the commissioning documents and witness a sample of tests (not required for Core and Shell projects).

  - **Occupancy/operations phase** : Develop an ongoing commissioning plan.
  

REQUIREMENTS EXPLAINED

The prerequisite requires that projects perform commissioning for building systems, controls, and the building envelope in compliance with the minimum requirements of ASHRAE Standard 90.1 and additional LEED BD+C: New Construction and LEED BC+C: Core and Shell rating system provisions.

Automatic Achievement of Prerequisite through EAc5: Enhanced Commissioning, Option 1

Projects that achieve all EAc5: Enhanced Commissioning, Option 1 requirements for the building enclosure and MEP systems automatically comply with the prerequisite requirements since the credit requirements encompass all commissioning requirements from the ASHRAE 90.1 standard referenced in EAp3: Fundamental Commissioning .

Therefore, when planning the commissioning scope, review the EAc5: Enhanced Commissioning, Option 1 requirements, paying special attention to the required timing for Commissioning Provider (CxP) engagement during predesign or very early in the commissioning process to accomplish the broader commissioning scope of work required for credit compliance.

Tables 1 and 2 compare the required tasks for EAp3: Fundamental Commissioning and EAc5: Enhanced Commissioning, Option 1.

Compliance using EAp3 Fundamental Commissioning Path

REQUIRED ASHRAE STANDARD 90.1 VERSION

Projects registered before January 1, 2028, can reference ASHRAE Standard 90.1-2019 or any later version. Projects registered on or after January 1, 2028, must use ASHRAE Standard 90.1- 2022 or later.

U.S. Green Building Council LEED v5 Reference Guide for Building Design and Construction, April 2025 Launch Edition 229