| SECTION F : CONSTRUCTION |
| Division 43: Specialized construction activities |
| Group | Class | Sub-class | Description |
| 431 | | | Demolition and site preparation |
| | | | Demolition |
| | | | This class includes demolition or wrecking of buildings and other structures |
| | | 43110 | Demolition |
| | 4312 | | Site preparation |
| | | | This class excludes: |
| | | | - drilling of production oil or gas wells, see 0610, 0620 |
| | | | - decontamination of soil, see 3900 |
| | | | - water well drilling, see 4220 |
| | | | - shaft sinking, see 4390 |
| | | | - oil and gas field exploration, geophysical, geological and seismic surveying, see 7110 |
| | | 43121 | Site preparation for mining including overburden removal and other development and preparation of mineral properties and sites except oil and gas sites |
| | | 43122 | Site preparation including drilling, boring and core sampling for construction, geophysical, geological or similar purposes |
| | | 43123 | Clearing of building sites, earth moving: excavation, landfill, levelling and grading of construction sites, trench digging, rock removal, blasting etc. |
| | | 43129 | Other site preparation activities n.e.c. |
| 432 | | | Electrical, plumbing and other construction installation activities |
| | 4321 | | Electrical installation |
| | | | This class excludes: |
| | | | - construction of communications and power transmission lines, see 4220 |
| | | 43211 | Installation of electrical wiring and fittings |
| | | 43212 | Installation of telecommunications wiring, computer network and cable television wiring, including fibre optic, satellite dishes |
| | | 43213 | Installation of street lighting and electrical signals |
| | | 43214 | Installation of fire alarm system and burgler alarm system |
| | | 43219 | Other electrical electrical installation n.e.c. |
| | 4322 | | Plumbing, heat and air-conditioning installation |
| | | | This class excludes: |
| | | | - installation of electric baseboard heating, see 4321 |
| | | 43221 | Installation of plumbing for water, gas and sanitation equipments |
| | | 43222 | Installation of heating systems (electric, gas and oil), furnaces, cooling towers, non-electric solar energy collectors etc. |
| | | 43229 | Other plumbing, heat and air conditioning activities n.e.c. |
| | 4329 | | Other construction installation |
| | | | This class excludes: |
| | | | - installation of industrial machinery, see 3320 |
| | | 43291 | Installation of elevators, escalators |
| | | 43292 | Installation of thermal, sound or vibration insulation system in buildings |
| | | 43299 | Other construction projects n.e.c. |
| 433 | | | Building completion and finishing |
| | 4330 | | Building completion and finishing |
| | | | This class excludes: |
| | | | - general interior cleaning of buildings and other structures, see 8121 |
| | | | - specialized interior and exterior cleaning of buildings, see 8129 |
| | | | - activities of interior decoration designers, see 7410 |
| | | 43301 | Installation of doors, windows, door and window frames, fitted kitchens, of wood or other materials |
| | | 43302 | Interior completion such as ceilings, wooden wall coverings, movable partitions etc. ; Laying of parquet and other wood floor coverings, carpets and linoleum, wallpaper; tiling with ceramic, concrete or cut stone ceramic etc. |
| | | 43303 | Interior and exterior painting, glazing, plastering and decorating of buildings or civil engineering structures |
| | | 43309 | Other building completion and finishing |
| 439 | | | Other specialized construction activities |
| | 4390 | | Other specialized construction activities |
| | | | This class includes construction activities specializing in one aspect common to different kind of structures, requiring specialized skill or equipment, subsurface work, construction of outdoor swimming pools, steam cleaning, sand blasting and similar activities for building exteriors, renting of cranes with operator |
| | | | This class excludes: |
| | | | - renting of construction machinery and equipment without operator, see 7730 |
| | | 43900 | Other specialized construction activities |