Abstract: A construction element, such as a supporting element for a retaining wall, has a casing which is at least partially permeable. The casing contains a block-shaped, granulated, bulk or porous filling material. The casing has two layers including a relatively rigid grating part (GT) for strength and a relatively flexible, finer meshed netting part (NT) for containment of filling material. The casing is designed as a closed hollow body which is coupled to the filling (FL) so as to form a substantially self-supporting construction element which is completely prefabricated.