Free application that supports the (Flemish) Energy Performance Legislation for Buildings. EPB=software is based on a large number of building and installation characteristics and calculates the U-values, the average insulation level and the E-level (Primary energy consumption) of newly built or renovated residential and non-residential buildings and controls compliance with energy-efficiency and indoor climate requirements. It also checks the compliance with the minimum ventilation requirements for all types of buildings. EPB-software Vlaanderen 1.0 has been public since March 2006. A French test version was made for the Brussels region and will be made for the Wallon region.