+---
+title: Total Building Commissioning
+category: Mechanical / Controls & Testing
+toc_depth: 3
+description: >
+ When to use: Total building commissioning (TBCx) on new construction and major
+ renovation of commercial, institutional, and multi-use buildings, covering the full
+ Pre-Design, Design, Construction, and Occupancy commissioning lifecycle per ASHRAE
+ Guideline 0 and ANSI/ASHRAE/IES 202 - the Owner's Project Requirements (OPR) and
+ Basis of Design (BOD), commissioning plan, installation and startup verification,
+ functional performance testing, deferred and seasonal testing, and the final
+ commissioning report. Applies to Fundamental, LEED Enhanced, and Total Building
+ scope tiers, and is triggered by 2021 IECC C408, ASHRAE 90.1 Section 8.7, and LEED
+ v4/v4.1 EAp1/EAc1.
+ Not intended for: TAB field measurement (sync/testing-adjusting-and-balancing);
+ BAS sequence programming and point-to-point checkout (sync/building-automation-system);
+ VFD parameter setup and drive startup (sync/hvac-variable-frequency-drives);
+ controls integration and sequence-of-operations development (sync/control-systems-integration);
+ electrical acceptance testing such as relay coordination and hi-pot (sync/electrical-acceptance-testing);
+ structured cabling certification (sync/structured-cabling); piping pressure and
+ hydrostatic tests (sync/hvac-piping-valves, sync/plumbing-piping-valves); seismic
+ restraint inspection (sync/hangers-and-supports); and surveillance camera
+ acceptance (sync/video-surveillance-systems).
+---
+
+# Scope {toc}
+
+## This Standard defines the commissioning process for the Work, including the roles, deliverables, verification activities, and acceptance criteria required to confirm that building systems are installed, started, and perform in accordance with the Owner's Project Requirements.
+
+### Commissioning is a quality-focused process, not a single test event. It begins in pre-design with the Owner's Project Requirements and continues through design review, installation verification, functional performance testing, and post-occupancy operation. The commissioning authority is an advocate for the Owner's interests across all four phases, independent of the parties whose work is being verified. {note}
+
+### The commissioning authority (CxA) shall execute and document the commissioning process defined in this Standard for all systems listed in the commissioning scope.
+
+### The Contractor and each subcontractor whose work is within the commissioning scope shall support the commissioning process, including completing pre-functional checklists, demonstrating system readiness, and participating in functional performance testing.
+
+### The terms "commissioning authority," "commissioning agent," and "commissioning provider" are used interchangeably across the referenced standards. This Standard uses "commissioning authority (CxA)" exclusively; any of these terms appearing in other Contract Documents shall be read to mean the CxA as defined here. {note}
+
+## Commissioning scope tier
+
+### The commissioning scope tier establishes which systems are commissioned and to what depth. Fundamental commissioning is the energy-code minimum; LEED Enhanced and Total Building extend the scope to additional systems and add design-phase and post-occupancy obligations. Select the tier that satisfies the applicable code and certification requirements; when in doubt, the more comprehensive tier governs. {note}
+
+```datasheet
+label: Commissioning scope tier
+type: radio
+options:
+ - Fundamental (IECC C408 / ASHRAE 90.1 Section 8.7 minimum - HVAC&R and lighting controls)
+ - LEED Enhanced (adds building enclosure, lighting, domestic hot water, renewable energy; 10-month review)
+ - Total Building (all MEP, enclosure, fire/life-safety, specialty systems)
+default: LEED Enhanced (adds building enclosure, lighting, domestic hot water, renewable energy; 10-month review)
+```
+
+### Fundamental commissioning covers only the systems mandated by the energy code: mechanical HVAC&R systems above the code thresholds and the lighting controls that serve them. It does not include the building enclosure, normal-power electrical distribution, or specialty systems. {note}
+
+### LEED Enhanced commissioning extends Fundamental scope to the building enclosure, interior and exterior lighting and lighting controls, domestic hot water, and renewable energy systems, and adds CxA review of design documents, Contractor submittals, and operation and maintenance manuals, plus a post-occupancy review. {note}
+
+### Total Building commissioning includes all mechanical, electrical, plumbing, enclosure, fire and life-safety, information technology, audiovisual, and vertical-transportation systems, and is typical for healthcare, laboratory, data-center, and federal projects. {note}
+
+## Systems commissioned
+
+### The systems to be commissioned shall be those selected below, together with any system specifically identified as commissioned in its governing specification section.
+
+```datasheet
+label: Systems within commissioning scope
+type: checkbox
+options:
+ - HVAC&R equipment and distribution
+ - Building automation and control systems
+ - Lighting and lighting controls
+ - Domestic hot water and plumbing
+ - Building enclosure (air barrier, fenestration, thermal)
+ - Fire alarm and smoke control
+ - Emergency and standby power
+ - Renewable energy systems
+ - Service water heating and heat recovery
+ - Vertical transportation
+```
+
+## Excluded scope
+
+### Testing, adjusting, and balancing field measurement is performed under [[sync/testing-adjusting-and-balancing]]; the commissioning authority receives the TAB report as a verified input to functional performance testing but does not perform balancing. {note}
+
+### Building automation sequence-of-operations programming and point-to-point checkout are performed under [[sync/building-automation-system]] and [[sync/control-systems-integration]]; the CxA verifies that sequences are implemented correctly but does not write them. {note}
+
+### Variable-frequency-drive parameter configuration and drive-level startup are performed under [[sync/hvac-variable-frequency-drives]]; the CxA tests VFDs only as components within integrated system functional testing. {note}
+
+### Electrical acceptance testing - relay coordination, breaker trip-curve verification, and switchgear hi-pot - is performed under [[sync/electrical-acceptance-testing]]; structured cabling certification is performed under [[sync/structured-cabling]]. The CxA receives these reports as inputs but does not perform the tests. {note}
+
+# Referenced Standards {toc}
+
+## Equipment, materials, and process activities shall comply with the latest adopted edition of each of the following unless a specific edition is cited.
+
+## Where referenced standards conflict, the more stringent requirement shall govern unless the Engineer of Record directs otherwise in writing.
+
+### Where a referenced document is an ASHRAE Guideline (advisory) rather than a Standard, the corresponding enforceable acceptance criteria derive from the cited ANSI/ASHRAE/IES Standard listed in the table below. {note}
+
+| Standard | Title |
+|----------|-------|
+| ASHRAE Guideline 0-2019 | The Commissioning Process |
+| ANSI/ASHRAE/IES 202-2024 | Commissioning Process for Buildings and Systems |
+| ASHRAE Guideline 1.1-2025 | HVAC&R Technical Requirements for the Commissioning Process |
+| ASHRAE Guideline 0.2-2023 | Commissioning Process for Existing Buildings and Systems |
+| ANSI/ASHRAE/IES 90.1-2022 | Energy Standard for Buildings Except Low-Rise Residential (Section 8.7) |
+| IECC 2021 | International Energy Conservation Code, Commercial Provisions (Section C408) |
+| NEBB | Whole Building Technical Commissioning of New Construction |
+| USGBC LEED v4.1 BD+C | Fundamental and Enhanced Commissioning (EAp1 / EAc1) |
+| ANSI/SMACNA 014 | HVAC Systems - Testing, Adjusting and Balancing |
+| NFPA 72-2022 | National Fire Alarm and Signaling Code |
+
+# Submittals {toc}
+
+## Action Submittals
+
+### The CxA shall submit the following for review and acceptance before the associated commissioning activity proceeds:
+
+- Owner's Project Requirements (OPR) document, or CxA review comments on the Owner-furnished OPR
+- Commissioning plan, with system list, roles matrix, and schedule
+- Design-phase commissioning review comments, including Basis of Design (BOD) review
+- Pre-functional checklist (PFC) templates for each system type
+- Functional performance test (FPT) scripts for each system type
+- Integrated systems test (IST) procedures and scenario list
+- Commissioning meeting agendas and minutes
+
+```datasheet
+label: CxA action submittals
+type: checkbox
+options:
+ - Owner's Project Requirements (OPR) or review comments
+ - Commissioning plan
+ - Design-phase review comments (incl. BOD review)
+ - Pre-functional checklist templates
+ - Functional performance test scripts
+ - Integrated systems test procedures
+ - Meeting agendas and minutes
+default:
+ - Commissioning plan
+ - Pre-functional checklist templates
+ - Functional performance test scripts
+```
+
+### The Contractor shall submit the following in support of commissioning before functional performance testing of the associated system begins:
+
+- Completed and signed pre-functional checklists for each system
+- Equipment startup reports from manufacturers' representatives
+- Testing, adjusting, and balancing (TAB) report, certified complete
+- Building automation system point-to-point checkout records
+- Manufacturer training plans and schedules
+
+```datasheet
+label: Contractor commissioning-support submittals
+type: checkbox
+options:
+ - Completed pre-functional checklists
+ - Equipment startup reports
+ - Certified TAB report
+ - BAS point-to-point checkout records
+ - Training plans and schedules
+default:
+ - Completed pre-functional checklists
+ - Equipment startup reports
+ - Certified TAB report
+ - BAS point-to-point checkout records
+```
+
+## Closeout Submittals
+
+### The CxA shall submit the following at the conclusion of the commissioning process:
+
+- Final commissioning report, including executive summary and system narratives
+- Completed functional performance test records, signed and dated
+- Open-items register (issues log) with resolution due dates and responsible parties
+- Deferred and seasonal test log with scheduled completion dates
+- Systems manual or summary of operation and maintenance information
+- Recommendations for ongoing commissioning and recommissioning
+
+```datasheet
+label: CxA closeout submittals
+type: checkbox
+options:
+ - Final commissioning report
+ - Completed FPT records
+ - Open-items register
+ - Deferred and seasonal test log
+ - Systems manual / O&M summary
+ - Ongoing commissioning recommendations
+default:
+ - Final commissioning report
+ - Completed FPT records
+ - Open-items register
+ - Deferred and seasonal test log
+```
+
+## Informational Submittals
+
+### The following shall be submitted for the Owner's information:
+
+- CxA qualifications, certifications, and project references
+- BECx subconsultant qualifications, where building enclosure commissioning is included
+- Commissioning progress reports at intervals defined in the commissioning plan
+
+```datasheet
+label: Informational submittals
+type: checkbox
+options:
+ - CxA qualifications and references
+ - BECx subconsultant qualifications
+ - Commissioning progress reports
+default:
+ - CxA qualifications and references
+ - Commissioning progress reports
+```
+
+# Quality Assurance {toc}
+
+## Commissioning authority qualifications
+
+### The CxA's independence and credentials are the foundation of a credible commissioning process. An agent who reports to the party whose work is being verified cannot be a neutral advocate for the Owner. The required independence level scales with project size and certification scope. {note}
+
+### The CxA shall hold a current commissioning credential from a recognized certifying body. The specification shall list acceptable credentials rather than naming a single body, to preserve competitive bidding. {note}
+
+```datasheet
+label: Acceptable CxA credentials
+type: checkbox
+options:
+ - NEBB Building Systems Commissioning
+ - ACG (AABC Commissioning Group) certification
+ - BCxP (ASHRAE/AIA Building Commissioning Professional)
+ - CxA (University of Wisconsin / AEE)
+ - PE with documented commissioning experience
+default:
+ - NEBB Building Systems Commissioning
+ - ACG (AABC Commissioning Group) certification
+ - BCxP (ASHRAE/AIA Building Commissioning Professional)
+```
+
+### CxA independence
+
+```datasheet
+label: CxA independence and engagement model
+type: radio
+options:
+ - Independent third-party firm (no contractual tie to design or construction)
+ - Design-team subconsultant (MEP engineer of record provides Cx services)
+ - Owner's in-house facilities engineering staff
+default: Independent third-party firm (no contractual tie to design or construction)
+```
+
+### For LEED Enhanced commissioning, and for projects with new HVAC systems in buildings exceeding 50,000 ft², the CxA shall be independent of the design and construction teams in accordance with ASHRAE 90.1 Section 8.7. {note}
+
+### The CxA shall have demonstrated experience commissioning systems of the type and complexity included in this project's scope. {note}
+
+### Where building enclosure commissioning is included, the CxA shall demonstrate enclosure commissioning experience or engage a qualified BECx subconsultant. Not all commissioning firms have enclosure capability; this is a common scope gap. {note}
+
+## CxA engagement timing
+
+### The CxA shall be engaged no later than the schematic design phase so that the Owner's Project Requirements is established and design-phase commissioning deliverables are produced.
+
+### Engaging the CxA after schematic design is the most damaging schedule error in commissioning. If the CxA arrives during construction, the OPR is missing or incomplete, the BOD was never reviewed against it, and the design-phase value of commissioning is lost permanently. {note}
+
+## Commissioning meetings
+
+### The CxA shall conduct a commissioning kickoff meeting at the start of construction and periodic commissioning coordination meetings at intervals defined in the commissioning plan.
+
+### The CxA shall conduct a commissioning issues review at each coordination meeting, with the open-items register as the standing agenda item.
+
+# Owner's Project Requirements and Basis of Design {toc}
+
+## The OPR and BOD are the reference documents against which every later commissioning activity is judged. The OPR states what the Owner needs in measurable terms; the BOD states how the design team intends to meet it. If acceptance criteria are not traceable to these documents, functional testing has no objective basis. {note}
+
+## Owner's Project Requirements
+
+### The OPR shall document the Owner's functional requirements and expectations for the project, including environmental conditions, occupancy needs, sustainability goals, energy and water targets, system performance criteria, and operation and maintenance expectations.
+
+### The OPR shall be reviewed and updated at each design milestone to reflect approved design changes, so that functional test criteria remain aligned with the installed systems.
+
+### The OPR is a living document; an OPR written in pre-design and never updated produces acceptance criteria that no longer match the building. {note}
+
+### OPR development responsibility
+
+```datasheet
+label: OPR development responsibility
+type: radio
+options:
+ - CxA drafts the OPR through Owner interviews
+ - Owner drafts the OPR; CxA reviews and comments
+ - Design team drafts the OPR; CxA reviews and comments
+default: CxA drafts the OPR through Owner interviews
+```
+
+### OPR finalization milestone
+
+```datasheet
+label: OPR finalization milestone
+type: radio
+options:
+ - Pre-design (programming complete)
+ - Schematic design (SD)
+ - 80% schematic design
+ - Design development (DD)
+default: 80% schematic design
+```
+
+## Basis of Design
+
+### The design team shall prepare the BOD describing the systems, assumptions, codes, standards, narratives, and calculations used to satisfy the OPR.
+
+### The CxA shall review the BOD against the OPR and submit review comments. The BOD response from the Engineer of Record shall be provided by the 50% design development milestone unless the commissioning plan establishes a different date.
+
+# Commissioning Plan {toc}
+
+## The commissioning plan is the operating manual for the process: who does what, on which systems, in what sequence, and to what acceptance criteria. It is revised as the project develops because the system list, schedule, and responsibilities all sharpen between design and construction. {note}
+
+## The CxA shall develop and maintain the commissioning plan, including the system list, commissioning team roles and responsibilities, the commissioning process activities and schedule, and the acceptance criteria and documentation formats.
+
+## Commissioning plan issue schedule
+
+### The commissioning plan shall be issued for Owner review at the milestones selected below and updated to reflect design and field changes at each subsequent issue.
+
+```datasheet
+label: Commissioning plan issue schedule
+type: checkbox
+options:
+ - First issue at 50% construction documents
+ - Update at 90% construction documents
+ - Update at start of construction
+ - Update at each major design revision
+default:
+ - First issue at 50% construction documents
+ - Update at 90% construction documents
+ - Update at start of construction
+```
+
+## The commissioning plan shall identify the party responsible for coordinating integrated systems testing. Where fire alarm, smoke control, and emergency power interact, the CxA shall be designated the IST coordinator unless the plan assigns the role to a named party in writing.
+
+# Documentation Platform {toc}
+
+## Consistent documentation format determines whether the commissioning record is usable after turnover. A scattered set of spreadsheets and paper forms produces a final report that cannot be audited; a structured platform keeps the issues log, checklists, and test records linked. {note}
+
+## Commissioning documentation platform
+
+```datasheet
+label: Commissioning documentation platform
+type: radio
+options:
+ - Cloud commissioning management platform
+ - Construction management platform commissioning module
+ - Structured spreadsheet workbook with issues log
+ - Owner-specified platform
+default: Cloud commissioning management platform
+```
+
+## All commissioning documentation shall be delivered to the Owner in an editable, non-proprietary format in addition to any platform-native format, so that the record remains accessible after the platform subscription ends. {note}
+
+# Installation Verification {toc}
+
+## Installation verification - the pre-functional checklist - confirms that equipment is installed, connected, and ready before any functional test is attempted. Skipping it wastes functional-test labor on systems that were never going to pass; an unconnected sensor or a missing belt is found at the checklist stage, not during a witnessed test. {note}
+
+## Pre-functional checklists
+
+### The Contractor shall complete and sign a pre-functional checklist for each commissioned system, verifying installation completeness, correct connection, cleanliness, labeling, and startup readiness.
+
+### One hundred percent of commissioned systems shall have completed and signed pre-functional checklists before functional performance testing of that system begins. No sampling is permitted at the pre-functional stage.
+
+### The CxA shall review and sign the pre-functional checklists and shall verify a representative sample of checklist items in the field.
+
+## Startup verification
+
+### The Contractor shall complete manufacturer-directed startup for each system and submit the startup report before functional performance testing begins.
+
+### TAB completion is a prerequisite input to HVAC functional testing, not a substitute for it. A specification stating that TAB constitutes commissioning is non-compliant and will fail energy-code review. The certified TAB report shall be received and accepted before HVAC functional testing begins. {note}
+
+### Building automation point-to-point checkout by the controls contractor is a precondition for functional testing, not the commissioning test itself. The CxA shall verify the controls checkout is complete before functional testing of automated systems begins. {note}
+
+# Testing {toc}
+
+## Functional performance testing demonstrates that each system performs as intended across its full range of operation, including normal operation, part-load operation, failure and safety modes, and recovery. It is the heart of commissioning and the basis on which systems are accepted. {note}
+
+## Functional performance testing
+
+### The CxA shall direct functional performance testing of each commissioned system in accordance with the accepted FPT scripts. The Contractor shall operate the systems and demonstrate performance; the CxA shall witness, verify, and record the results.
+
+### Each functional test shall exercise normal operation, all relevant operating modes, setpoint and reset response, safety and alarm functions, and failure and recovery sequences across the system's operating range.
+
+### FPT witness level
+
+```datasheet
+label: Functional performance test witness level
+type: radio
+options:
+ - CxA directly witnesses or directs 100% of FPT (LEED Enhanced)
+ - CxA witnesses sampled FPT; Contractor self-documents balance with CxA spot-check
+default: CxA directly witnesses or directs 100% of FPT (LEED Enhanced)
+```
+
+### For LEED Enhanced commissioning, the CxA shall directly witness or direct one hundred percent of functional performance testing. {note}
+
+## Sampling strategy
+
+### Sampling lets repetitive equipment be tested efficiently without testing every identical unit, while non-repetitive and critical equipment is tested completely. Writing "100% of all equipment" onto a project with hundreds of identical units creates a budget impasse; omitting sampling language entirely leaves the scope undefined. State the rate per equipment category explicitly. {note}
+
+### Functional test sampling strategy
+
+```datasheet
+label: Functional test sampling strategy for repetitive equipment
+type: radio
+options:
+ - 100% of all units (no sampling)
+ - First unit of each type plus 10% of remaining identical units, minimum one additional
+ - First unit of each type plus 20% of remaining identical units, minimum one additional
+default: First unit of each type plus 10% of remaining identical units, minimum one additional
+```
+
+### Where a sampled unit fails functional testing, the sample shall be expanded for that equipment category. The CxA shall define the expansion in the FPT script - for example, doubling the sample, and testing one hundred percent if the expanded sample also fails. {note}
+
+### Non-repetitive equipment, equipment serving critical functions, and all equipment under LEED Enhanced commissioning shall be tested at one hundred percent. {note}
+
+## Re-test responsibility
+
+### Where a system fails its first functional test because of a Contractor deficiency, the Contractor shall bear the cost of the CxA's labor to witness the re-test. Failing to assign re-test cost is a common source of dispute; assign it explicitly. {note}
+
+## Integrated systems testing
+
+### Integrated systems testing verifies behavior that no single system exhibits alone - the smoke-control response to a fire alarm, the load transfer from normal to emergency power, the demand-response shed across the building automation system. These tests fail most often not technically but organizationally, because each contractor assumes another party is running the scenario. {note}
+
+### The CxA shall coordinate and direct integrated systems testing for the scenarios within the commissioning scope, with each participating trade present and operating its system.
+
+### Integrated test scenarios
+
+```datasheet
+label: Integrated systems test scenarios
+type: checkbox
+options:
+ - Fire alarm to smoke-control sequence
+ - Emergency generator and automatic transfer switch sequence
+ - Loss-of-normal-power critical load ride-through
+ - BAS demand-response / load-shed scenario
+ - Smoke purge and stairwell pressurization
+ - Elevator recall on alarm
+default:
+ - Fire alarm to smoke-control sequence
+ - Emergency generator and automatic transfer switch sequence
+```
+
+## Deferred and seasonal testing
+
+### Some functional tests cannot run at substantial completion because the required ambient condition does not exist - heating-mode testing of a building completed in summer, or full cooling load testing of a building completed in winter. These tests are deferred to the appropriate season, and they are the most commonly forgotten obligation in the entire process. {note}
+
+### The CxA shall identify functional tests that require a specific season or operating condition and shall list them as deferred tests in the commissioning plan and the final report.
+
+### Deferred and seasonal test window
+
+```datasheet
+label: Deferred / seasonal test completion window after substantial completion
+type: radio
+options:
+ - Within the next applicable season
+ - Within 6 months
+ - Within 12 months
+ - Within the warranty period
+default: Within the next applicable season
+```
+
+### Open deferred test items shall be listed in the final commissioning report with a scheduled completion date and a responsible party, and shall be tracked to closure on a posted deferred-test log. {note}
+
+### Where the Authority Having Jurisdiction does not require closure before occupancy, the certificate of occupancy may be issued with deferred tests open as a condition of occupancy; the Contractor's obligation to complete them shall survive substantial completion. {note}
+
+# Building Enclosure Commissioning {toc}
+
+## Building enclosure commissioning (BECx) verifies that the air barrier is continuous, that fenestration resists water infiltration, and that the assembly performs thermally. It is a distinct sub-discipline included with Enhanced and Total Building scope, and it triggers whole-building air-leakage testing under the energy code. {note}
+
+## BECx inclusion
+
+```datasheet
+label: Building enclosure commissioning scope
+type: radio
+options:
+ - Not included (Fundamental scope)
+ - Air barrier continuity verification and review only
+ - Full BECx (air barrier, fenestration water testing, thermal imaging)
+default: Not included (Fundamental scope)
+```
+
+## Where BECx is included, the CxA or BECx subconsultant shall verify air barrier continuity, witness fenestration and curtain-wall water-infiltration testing, and perform thermal imaging of the completed enclosure.
+
+## Whole-building air leakage
+
+### Whole-building air leakage target
+
+```datasheet
+label: Whole-building air leakage target at 75 Pa
+type: range
+unit: cfm/ft²
+min: 0.15
+max: 0.50
+step: 0.05
+setpoints:
+ - 0.25
+ - 0.40
+default: 0.40
+```
+
+### The whole-building air leakage rate shall not exceed 0.40 cfm/ft² at 75 Pa for commercial buildings per the energy code. Healthcare and laboratory projects commonly specify a tighter limit of 0.25 cfm/ft²; the more stringent project-specific target governs where one is set. {note}
+
+# Occupancy and Operations {toc}
+
+## Commissioning does not end at substantial completion. The occupancy phase confirms that the building actually operates as intended once it is in use, that operators have been trained, and that deferred and seasonal tests are closed. For Enhanced commissioning this phase includes a formal post-occupancy review. {note}
+
+## Operator training
+
+### The Contractor shall provide manufacturer and systems training to the Owner's operating staff for each commissioned system, and the CxA shall verify that training is delivered in accordance with the accepted training plan.
+
+## Post-occupancy review
+
+### Post-occupancy review period
+
+```datasheet
+label: Post-occupancy review period (LEED Enhanced)
+type: radio
+options:
+ - Not included (Fundamental scope)
+ - 10 months after substantial completion
+ - 12 months after substantial completion
+default: 10 months after substantial completion
+```
+
+### For LEED Enhanced commissioning, the CxA shall conduct a post-occupancy review no later than ten months after substantial completion, review trended operating data, conduct a review meeting with the Owner, and issue a resolution letter documenting outstanding items. {note}
+
+## Ongoing commissioning
+
+### Ongoing commissioning (OCx) provisions
+
+```datasheet
+label: Ongoing commissioning provisions
+type: radio
+options:
+ - Not included
+ - Trending and monitoring verification through the warranty period
+ - Continuous monitoring-based commissioning program
+default: Not included
+```
+
+### Where ongoing commissioning is contracted, the CxA shall establish trends and monitoring points, review the trended data at defined intervals, and report deviations from the Owner's Project Requirements. {note}
+
+# Final Commissioning Report {toc}
+
+## The final commissioning report is the auditable record of the entire process. A report delivered without an open-items register is accepted by the Owner and the Authority Having Jurisdiction, after which the unresolved items are never tracked - the failure mode this Standard exists to prevent. {note}
+
+## The CxA shall prepare and submit the final commissioning report documenting the commissioning process, the results of all completed tests, the disposition of all issues, and the status of deferred and seasonal tests.
+
+## The final commissioning report shall include an open-items register listing each unresolved item, its resolution due date, and the responsible party.
+
+## Report delivery window
+
+```datasheet
+label: Final commissioning report delivery after substantial completion
+type: radio
+options:
+ - Within 30 days
+ - Within 60 days
+ - Within 90 days
+default: Within 60 days
+```
+
+## The final commissioning report shall be delivered within sixty days of substantial completion unless the commissioning plan establishes a shorter period; thirty days is preferred and ninety days is the outer industry limit. {note}
+
+# Existing-Building Commissioning {toc}
+
+## On renovation of occupied buildings, the commissioning variant is retro-commissioning rather than new-construction commissioning. There is no OPR or BOD to develop; a systems investigation replaces the pre-functional checklists, establishing how the existing systems actually operate before improvements are tested. {note}
+
+## Where the project scope includes retro-commissioning of existing systems, the CxA shall develop current facility requirements in lieu of an OPR, conduct a systems investigation in lieu of pre-functional checklists, and functionally test the affected systems before and after corrective work in accordance with ASHRAE Guideline 0.2.
+
+# Phased and Turnover Commissioning {toc}
+
+## On large or multi-phase projects, completed zones are occupied while commissioning of remaining zones continues. The commissioning plan defines the boundary of each phase so that partial occupancy of a finished zone does not depend on testing that is still open elsewhere. {note}
+
+## Where the project is occupied in phases, the commissioning plan shall define each commissioning phase, its system boundary, and the acceptance criteria for partial occupancy, so that a completed zone may be accepted independently of zones still under commissioning.
+
+# Warranty {toc}
+
+## The CxA's commissioning services and the Contractor's obligation to complete deferred and seasonal functional tests shall survive substantial completion until those obligations are discharged in accordance with this Standard.
+
+## Defects identified during deferred, seasonal, or post-occupancy commissioning activities within the warranty period shall be corrected under the applicable system warranty at no additional cost to the Owner.