| | Construct | Factor | Sources |
| | Task complexity (TCL) | Buildability (TCL1) | [28, 33, 107] | | Uncertainties in scope (TCL2) | [33, 108] | | Site location (TCL3) | [109, 110] | | Novel technologies (TCL4) | [20, 111] | | Organization complexity (OCL) | Resources management (OCL1) | [33, 47, 48] | | Technological & leadership abilities (OCL2) | [28, 33] | | Experience & collaboration of stakeholders (OCL3) | [33, 45, 46] | | Planning & controlling (OCL4) | [45, 47, 112] | | Market complexity (MCL) | Market uncertainties (MCL1) | [63, 113] | | Competition level (MCL2) | [28] | | Economic & financial dynamics (MCL3) | [33, 48, 114] | | Market structure (MCL4) | [53] | | Legal complexity (LCL) | Administrative procedures (LCL1) | [26, 115] | | Applicable regulations (LCL2) | [33, 115] | | Influence from local councils (LCL3) | [26, 116, 117] | | Contract conditions (LCL4) | [33, 47, 110] | | External environment | | | | Complexity (EEC) | Weather conditions (EEC1) | [63, 108] | | Unforeseen natural disasters (EEC2) | [33, 64] | | Differences in social/cultural/language (EEC3) | [47, 48] | | Project cost (PC) | Capital construction cost (PC1) | [39] | | Associated capital cost (PC2) | | Client-related cost (PC3) |
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