The means whereby the variables, times and costs, proposed by the various
firms competing for the contract, can be converted into definite data.
An accurate analysis of these variables can only be carried out if the working design has achieved high levels of detail, for homogeneity and comparability of the calls for tenders. In this way a check on building costs can be carried out and an indication given to the client of the most suitable contractor both in terms of costs and time and specific capabilities.