DBIA Project Closeout and Commissioning — Questions and Answers
Question 1: Substantial completion in a design-build project is best defined as the point when:
- All punch list items are corrected and the owner approves final payment
- The project is sufficiently complete so the owner can occupy or use it for its intended purpose (Correct answer)
- The design-builder has submitted all as-built drawings and O&M manuals
- The surety company formally releases the performance bond
Correct answer: The project is sufficiently complete so the owner can occupy or use it for its intended purpose
Substantial completion is reached when the project—or a designated portion—is complete enough under the contract for the owner to occupy or use it for its intended purpose. This milestone typically triggers the start of warranty periods, transfer of insurance responsibility, and release of retainage, even if minor punch list items remain.
Question 2: Which document, typically generated during final inspection near project closeout, lists remaining minor deficiencies the design-builder must correct?
- Certificate of Occupancy
- Notice of Commencement
- Punch List (Deficiency List) (Correct answer)
- Final Waiver of Lien
Correct answer: Punch List (Deficiency List)
A punch list (also called a deficiency list or snag list) catalogs remaining incomplete or deficient items identified during final walkthrough. It is jointly developed by the owner and design-builder and must be resolved before final payment is released. It is distinct from the certificate of occupancy, which is a regulatory document issued by the authority having jurisdiction.
Question 3: Commissioning in a design-build project primarily involves:
- Awarding subcontracts for mechanical, electrical, and plumbing systems
- Obtaining all required building permits before construction begins
- Verifying that building systems are installed, tested, and operating per the owner's design intent (Correct answer)
- Transferring design documents to the owner's facility management team
Correct answer: Verifying that building systems are installed, tested, and operating per the owner's design intent
Commissioning is a systematic quality process that verifies mechanical, electrical, plumbing, controls, and other systems are installed correctly, functionally tested, calibrated, and performing per the Owner's Project Requirements (OPR). It bridges construction completion and operational readiness—distinct from permitting or procurement activities.
Question 4: As-built (record) drawings prepared at design-build project closeout are primarily valuable because they:
- Serve as the design-builder's basis for warranty claims against the owner
- Document actual constructed conditions for future maintenance, renovation, and emergency response (Correct answer)
- Replace the original contract drawings as the legal record of design intent
- Transfer design liability from the design-builder to the owner upon acceptance
Correct answer: Document actual constructed conditions for future maintenance, renovation, and emergency response
As-built drawings record how the project was actually built—including deviations from the original design made during construction. They are essential reference documents for owners, facility managers, and future project teams who need to understand existing conditions for maintenance, operations, emergency planning, and future renovations.
Question 5: In design-build contracts following DBIA model language, the contractual warranty period for the completed work typically begins at:
- Contract execution
- Issuance of the notice to proceed
- Substantial completion (Correct answer)
- Receipt of final payment by the design-builder
Correct answer: Substantial completion
Warranty periods—both statutory and contractual—commence at substantial completion, when the owner begins occupying and using the facility. This is standard in DBIA model agreements and aligns risk with actual use: the owner begins depending on the facility's systems at substantial completion, so that is when protection should begin.
Question 6: Which of the following is typically NOT included in a design-build project closeout package?
- Operations and maintenance (O&M) manuals for installed systems
- Final lien waivers from subcontractors and suppliers
- The design-builder's original proposal submitted during procurement (Correct answer)
- Training documentation for the owner's staff on building systems
Correct answer: The design-builder's original proposal submitted during procurement
A closeout package typically includes O&M manuals, as-built drawings, training records, attic stock, equipment warranties, final lien waivers, and commissioning reports. The design-builder's original proposal is a procurement document retained separately; it is not a project deliverable and does not belong in the closeout submission.
DBIA Project Closeout and Commissioning
Substantial completion in a design-build project is best defined as the point when: