71.12.Z - Engineering activities and related technical consultancy
41.20.Z - Building works related to erection of residential and non-residential buildings
42.21.Z - Works related to construction of transmission pipelines and distribution networks
42.22.Z - Works related to construction of telecommunications and electricity lines
42.91.Z - Works related to construction of water projects
42.99.Z - Works related to construction of other civil engineering projects not elsewhere classified
43.21.Z - Electrical installation
43.22.Z - Plumbing, heat and air-conditioning installation
43.29.Z - Other construction installation
43.39.Z - Other building completion and finishing
43.91.Z - Roofing activities
43.99.Z - Other specialised construction activities not elsewhere classified
68.31.Z - Real estate agencies
68.32.Z - Management of real estate on a fee or contract basis
71.11.Z - Architectural activities
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
81.10.Z - Buildings service support activities
