Quality, aesthetic and utility is controlled, to some extent, by the level of detail contained in the project brief. This design and construction lump sum system varies from managing contractor non-traditional systems. A design development proposal is received from all tenderers and the contract sum is agreed on a lump sum basis, prior to any contractual arrangement between agency and contractor. As part of the tender process, tenderers arrange the design consultancy services to be engaged by the contractor and submit proposals with the tender. The consultants will produce the design development proposal.
Tender evaluation is on the basis of tender evaluation criteria.