| Change order | Change order |
|---|---|
| C1: Change of plans by owner | C6: Contractor’s lack of judgment |
| C2: Errors and omission in design (main element) | C7: Failure by a consultant to perform design and supervision effectively |
| C3: Poor planning by the contractor | C8: New government regulation |
| C4: Owner fails to make decisions or review documents at the right time | C9: Demolition and re-work, Quality improvement. |
| C5: The scope of work for the contractor is not well defined | C10: Safety available at the project site |