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Maintaining Steady Cost Projection on Wastewater Engineering Projects in Bulgaria

The cost of the engineering project of is one of the most important parameters at every stage of its life cycle and a key factor for its sustainability and efficiency. Over the past few years, some problems have been encountered in predicting the cost of wastewater projects in Bulgaria, which raises serious concerns both for the customers and the contractors of these projects. A significant deviation of actual costs from planned initial costs is noted at the premises. However, no timely measures are taken to correct it. The purpose of this report is to identify, analyze and rank influential factors on the cost variations of the Bulgarian wastewater projects and to suggest possible optimization. To achieve this, a study was conducted between April 2016 and May 2018, in which the authors invited practitioners and experts to participate in a structured survey. The research methodology is of survey-descriptive type. A wide range of research methods are used to successfully achieve the goals and tasks as secondary analysis of empirical data, structured interview, in-depth interviews and triangulation. A total of 43 factors have been identified, of which the greatest impact on the efficiency of engineering projects in Bulgaria is access to financing at the design stage, lowest procurement bidding, inadequate pricing methods and bureaucracy.