LEED Enhanced Commissioning represents a more comprehensive commissioning process than the fundamental commissioning required as a LEED prerequisite, earning additional certification points.
Fundamental Commissioning (prerequisite) includes: commissioning authority designation, Owner’s Project Requirements (OPR) and Basis of Design (BoD) documentation, commissioning plan development, design review, commissioning specifications, verification of system installation, functional performance testing, and final commissioning report. This level establishes baseline commissioning activities.
The following summary of changes is provided by the USGBC when moving from LEED v4 to LEED v5 prerequisites for Fundamental Commissioning and Verification:
Replaced all previously referenced standards with ASNI/ASHRAE/IES Standard 90.1 as the commissioning requirements without Section 4.2.5.2 exceptions.
Removed allowance for the Commissioning Provider (CxP) to be a qualified member of the design or construction team for projects smaller than 20,000 square feet or data center projects.
Modified requirement such that the CxP is to assist in the development, reviewing, and updating of the OPR.
Added CxP attendance of one or more meetings with the design team focused on MEP and envelope review comments.
Added CxP review of submittals and substitutions for design deviations.
Added CxP attendance of 50% and 100% construction milestone meetings.
Added 10% sample review of completed contractor documentation.
Added requirement of envelope CxP to include testing in Cx documents and witness of sample of tests (not required by Core + Shell).
Moved ongoing commissioning plan requirement from the enhanced commissioning credit to fundamental commissioning credit.
Removed current facilities requirements and operations and maintenance plan development.
Enhanced Commissioning (EA Credit 6, worth up to 6 points in LEED v4/v4.1) requires all fundamental activities PLUS additional requirements: commissioning authority must be independent from design and construction teams (for design-bid-build projects), design review at 50-75% CD phase in addition to 90% CD review, commissioning process review by owner’s representative, envelope commissioning for thermal, moisture, and air leakage control, systems manual development, and post-occupancy review 10 months after substantial completion.
The key differentiators include: earlier design involvement, independent third-party verification, envelope commissioning integration, extended post-occupancy commitment, and more comprehensive documentation requirements.
Enhanced commissioning provides deeper verification, catches more issues, and supports better long-term performance. The additional activities cost approximately ~0.3-0.5% of construction cost beyond fundamental commissioning but deliver substantially greater value through comprehensive verification and optimization.
Projects pursuing Gold or Platinum LEED certification typically earn enhanced commissioning credits due to the significant point value and performance benefits. Enhanced commissioning also supports EA Credit 1 (Optimize Energy Performance) by verifying systems achieve modeled performance.
The following summary of changes is provided by the USGBC when moving from LEED v4 to LEED v5 when pursuing the LEED Enhanced Commissioning Credit:
Added stipulation that CxP must be designated during predesign or very early in design phase.
Updated Enhanced Commissioning (Option 1, Path 1) title to Enhanced Commissioning for MEP systems (Option 1, Path 1) for new construction.
Replaced all enhanced commissioning (Option 1, Path 1) standards with ANSI/ASHRAE/IES Standard 202-2024.
Added requirement of at least two coordination/design meetings to discuss review comments and commissioning requirements.
Updated Envelope Commissioning title to be Enhanced Commissioning for Building Enclosure.
Replaced envelope commissioning standards with ASTM E2947-21a.
Added building air leakage, water penetration, and infrared imaging field-testing requirements to enhanced commissioning for building enclosure.
Removed pre-requisite of enhanced commissioning for the monitoring-based commissioning option.
Added Monitoring-Based Commissioning (MBCx) path of Basic Software for new construction.
Increased MBCxP implementation duration to a minimum of three years.
Added annual MBCxP summary of trends, benchmarks, faults, energy saving opportunities, corrective actions taken and planned actions.
Added two MBCxP reviews of building systems, equipment and operational controls.
Added energy information system platform requirement with up to hourly visualization and reporting.
Added hourly monitoring and visualization of elevators, escalators, moving walkways, commercial kitchen equipment (if space exceeds 10kW of rated capacity), and process equipment (if space exceeds 10kW of rated capacity) for EIS system.
Added an Enhanced Software path for new construction
For LEED projects requiring enhanced commissioning expertise and compliance documentation, contact Catalyst Commissioning Group at info@catalystcx.com.