6
Buildings of metal; metal building materials; buildings, transportable of metal; scaffolding of metal; framework of metal for building, building panels of metal, building elements of metal and building parts of metal; windows, doors, staircases and flooring of metal; fittings of metal for buildings; sheets and plates of metal; pipes and pipe couplings of steel or metal; reinforcing materials for building purposes (of metal); roof coverings, roof covering material and roofing tiles of metal
19
Buildings, not of metal; building materials (non-metallic), non-metallic transportable buildings, scaffolding (not of metal), framework for building, building panels, building elements and building parts (not of metal); pipes, not of metal; windows, doors, mouldings, walls, staircases and flooring, not of metal; stone, stone tiles and clinker; roof trusses, roof covering material, roof coverings and roofing tiles, not of metal
36
Real estate affairs; accommodation bureaux; rental and brokerage of premises for accommodation and offices; real estate management and financial management; Leasing of real estate; financial affairs; insurance
37
Building construction; building services; rental of construction machines and other building construction equipment; installation, repair and maintenance of accommodation, premises and buildings; masonry; painting, interior and exterior; construction, repair and maintenance information; construction management
42
Planning of building estates and residential areas; architectural services; architectural consultancy; engineering drawings; technical and architectural information and consultancy services with regard to furnishing, furnishing products, building works, building methods, building material and the environment, including provided online via data networks and in forums and blogs