Computer aided decision support system for the selection of subcontractors in building refurbishment works

Building Refurbishment (BR) projects differ from new-build projects with regard to several issues. It is well known that BR projects are perceived to be more difficult to manage, and with higher risks and uncertainties than new-build projects. The contractual relationship between main contractors and subcontractors is the major feature of these activities. Hence, subcontractors perform vital roles in these projects. Currently, however, there is a lack of knowledge relating to the selection of subcontractors for BR projects. Typically, the task is performed in an unstructured with considerable reliance on the judgment of senior staff members. The research result presents a comprehensive evaluation of decision alternatives for engaging subcontractors in BR projects and to present a CADSS which is called subcontractor selection decision support system (SSDSS). The system provides valuable guidelines to decision-makers, as well as assists them in making decisions pertaining to selecting their subcontractors for BR contracts.