Building technology/ building services (building automation)Electrical installationGas installationHeatingRefrigerationSafety technologySanitaryStoves and fireplacesVentilation
Building plumbingFaçade worksInsulationRemediation of hazardous substances / Asbestos abatementRoof greeningRoof sealRoofing worksSealing worksStoves and fireplacesWindows
Building technology/ building services (building automation)CleaningElectrical installationGas installationHeatingSanitaryStoves and fireplacesVentilation