any activity in the field of architecture, painting, decoration, wallpapering, plastering, tiling, as well as all interior and exterior work in the field of demolition, construction, masonry, renovation, development, asbestos removal and all work related to the asbestos problem; purchase, sale and rental of commercial and industrial real estate; operation of a general contracting business, including in particular the study, direction, management and execution of construction and renovation work (cf. statutes for complete purpose).