Definition / Belongs to this divisionThis division includes:
- cleaning of the construction site
- soil movement: excavation, backfilling, leveling and leveling of the construction site, trenching, rock removal (including blasting), etc.
- preparation of the mining area
- removal of the cover layer, other land preparation operations at the mineral deposits, with the exception of the oil and gas deposits
also belongs to this sectorThis division also includes:
- drainage of the construction site
- drainage of agricultural and forestry land
It belongs to this branch - Hungarian supplementThis division includes - Hungarian supplement:
- construction-type earthworks in the production area (eg drainage, creation of terraces, preparation of rice fields)
It does not belong to this sectorThis division excludes:
- drilling of oil and gas wells, see 06.10, 06.20
- disposal of contaminated soil, see 39.00
- drilling of a water well, see 42.21
- shaft deepening, see 43.99
It does not belong to this branch - Hungarian supplementThis division excludes - Hungarian supplement:
- drilling of oil and gas wells on a fee or contract basis, see 09.10
- removal of mines and the like from the construction site (including blasting) see 39.00

Definition / Belongs to this divisionThis division includes:
- test drilling and soil sampling for construction, geophysical, geological and similar purposes
It does not belong to this sectorThis division excludes:
- drilling of oil and gas wells, see 06.10, 06.20
- test drilling and ancillary drilling services in the framework of mining activities (other than oil and gas), see 09.90
- drilling of a water well, see 42.21
- shaft deepening, see 43.99
- oil and gas exploration, geophysical, geological and seismographic surveys, see 71.12
It does not belong to this branch - Hungarian supplementThis division excludes - Hungarian supplement:
- drilling of oil and gas wells on a fee or contract basis, see 09.10

Definition / Belongs to this divisionThis subsector includes installation activities for the intended use of the building, including the installation of electrical systems, piping (water, gas and sewage), heating and air conditioning systems, lifts, etc.

Definition / Belongs to this divisionThis division includes the installation and on-site installation of the following electrical systems on all buildings and other structures:
- electrical wire and connector, meter
- computer network and cable television cables, including fiber optic cables
- satellite receiver antenna
- lighting system
- fire alarm
- burglar alarm system
- road, rail lighting and electrical signaling system
- airport runway lighting
- solar panel
also belongs to this sectorThis division also includes:
- connection of electrical appliances and household appliances, including the connection of electric central heating
It does not belong to this sectorThis division excludes:
- construction of telecommunications and power lines, see 42.22
- installation and maintenance of the electronic security system (burglary, fire alarm) which is not performed separately as part service, see: 80.20