At project completion, the contractor must provide legal and technical assurances to ensure sustained performance after handover.

1. Warranties & Guarantees

2. Key Close-Out Documents

• Completion & Occupancy Certificates
• Test Reports and Calibration Certificates
• Operation & Maintenance (O&M) Manuals
• Warranty and Guarantee Register
• Asset Register and Handover Checklist
• Final BOQ and Reconciliation Statement

3. Document Control Practices

• Maintain all records in digital format (PDF/DWG/O&M).
• Tag documents by WBS or system (e.g., HVAC-001, EL-002).
• Store in project document management systems (DMS) like Orangescrum Docs, BIM 360, or Aconex.
• Verify completeness through a Close-Out Documentation Matrix.