6
Reinforcing materials of metal for building; Swimming pools [metal structures]; Bars for metal railings; Flanges of metal [collars]; Windows frames of metal; Blades and shims of metal; Hinges of metal; Framework of metal for building; Frames of metal for use in building construction; Partitions of metal; Posts of metal; Metal building materials; Angle irons; Staircases of metal; Fittings of metal for building; Ironmongery; Roofing of metal
19
Building materials (non-metallic); Buildings, not of metal; Building materials, not of metal; Swimming pools [structures, not of metal]; Concrete building elements; Construction elements of timber; Lumber; Bricks; Framework for building, not of metal; Door and window frames, not of metal; Staircases, not of metal; Timber flooring; Wall linings, not of metal, for building; Ceilings, not of metal; Joists, not of metal; Roof coverings, not of metal; Shutters, not of metal
36
Leasing of real estate; Housing agents; Real estate appraisal; Financial estimates or budgets; Apartment house management; Real estate agencies; Rental of real estate (flats, buildings, houses)
37
Construction consultation; Building construction; supervision (building construction —); Construction information
42
Architecture; Architectural consultations; Drafting (Construction-); Development of plans for detached houses; Development of plans for offices; Design of interior decor; Land surveys; technical project studies relating to construction; Studies and research relating to passive buildings