摘要：Abstract The squandering of financial resources invested for the construction of public works has become an increasingly important issue during the continuing economic crisis and the slow recovery in the construction sector. In recent years it has taken cognizance of this critical and unsustainable financial weight that results in considerable economic and social repercussions. In addition to the corruption that require repressive intervention, there are methodological shortcomings in estimated economics, found both in the sector regulations, and in university courses. The work in this area, shows that one of the main problems arises at the programming phase of the works, when the erroneous assessment of the investment costs is reflected throughout the realization of the same. This paper is a summary of how scientific research into economic estimates may provide tools and identify shared methodologies, effective for the control of expenditure in the public works sector from the outset of the planning stage.
