| Factor | Mean | Std. Deviation | %of Relative Importance Index | t-value | P-value | Rank |
|---|---|---|---|---|---|---|
| The project has a clear vision and goal. | 4.67 | 0.560 | 93.48 | 28.227 | 0.000 | 1 |
| Sufficient experience of the designer. | 4.60 | 0.616 | 91.91 | 24.418 | 0.000 | 2 |
| Sufficient time given for the designer to design and prepare project drawings. | 4.29 | 0.678 | 85.84 | 17.990 | 0.000 | 3 |
| Teamwork and the involvement of all parties in the design phase. | 4.19 | 0.737 | 83.82 | 15.253 | 0.000 | 4 |
| An emphasis on quality during design. | 4.10 | 0.640 | 82.02 | 16.221 | 0.000 | 5 |
| The ability to accurately estimate the required time to complete the project. | 4.09 | 0.778 | 81.80 | 13.214 | 0.000 | 6 |
| Coordination of all official parties; (Qatari Committee, Ministry of Public Housing and Consultant...). | 4.01 | 0.859 | 80.22 | 11.101 | 0.000 | 7 |
| The ability to determine project cost with high accuracy. | 4.00 | 0.769 | 80.00 | 12.273 | 0.000 | 8 |
| The designer's awareness of security and safety precautions during the implementation and design phases to minimize risk. | 3.97 | 0.982 | 79.33 | 9.281 | 0.000 | 9 |
| The avoidance of changes made during design period and attention to detail. | 3.93 | 0.876 | 78.65 | 10.038 | 0.000 | 10 |
| Communication between the designer and the producer during the design period. | 3.91 | 1.018 | 78.20 | 8.430 | 0.000 | 11 |
| Communication with local and international markets to understand the use of modern products and industries. | 3.90 | 0.892 | 77.98 | 9.502 | 0.000 | 12 |
| Assurance that all parties are satisfied with the design. | 3.78 | 0.889 | 75.51 | 8.230 | 0.000 | 13 |
| Training courses provided for design staff to brief them on technical modernization and encourage increased awareness of building technologies. | 3.69 | 0.806 | 73.71 | 8.021 | 0.000 | 14 |
| Focus on the use of national and local products for rapid implementation. | 3.64 | 0.869 | 72.81 | 6.951 | 0.000 | 15 |
| The use of latest software and design codes. | 3.62 | 0.873 | 72.36 | 6.681 | 0.000 | 16 |
| The use of previous reports on similar projects. | 3.37 | 0.981 | 67.42 | 3.564 | 0.001 | 17 |
| Total | 3.99 | 0.384 | 79.71 | 24.190 | 0.000 |