More Investors prefer to organize their projects using Design–build project delivery system . This approach is based on the individual responsibility of the Contractor in respect with the Design and subsequent implementation in the construction aspect . Generally this minimizes risks for the project owner and reduces the delivery schedule by overlapping the design phase and construction phase of the project .

In this way customer requirements are fully compliant in terms of cost , quality and time , while ensuring optimal performance of all processes regarding the design ,  permits obtaining & authorization , material and technical provision , construction and commissioning of the site .