In this work are theoretically covered expenses from civil engineering projects, Scurve that connects expenses with duration in a project and it is described, in detail, an old heating plant of Osijek (Munjara) which is planned to be converted into tech museum. In practical segment it has been approached towards planning a project convertion and it is shown structural breakdown of the project (WBS), dynamic plan (gantogram), bill of quantites with unit cost estimate, histogram of expenses, Pareto diagram and in the end the way of connecting durations and activity costs inside project (S-curve).