| 45000000 | Construction work |
| 45100000 | Site preparation work |
| 45110000 | Building demolition and wrecking work and earthmoving work |
| 45111000 | Demolition, site preparation and clearance work |
| 45111100 | Demolition work |
| 45111200 | Site preparation and clearance work |
| 45111210 | Blasting and associated rock-removal work |
| 45111211 | Blasting work |
| 45111212 | Rock-removal work |
| 45111213 | Site-clearance work |
| 45111214 | Blast-clearing work |
| 45111220 | Scrub-removal work |
| 45111230 | Ground-stabilisation work |
| 45111240 | Ground-drainage work |
| 45111250 | Ground investigation work |
| 45111260 | Site-preparation work for mining |
| 45111290 | Primary works for services |
| 45111291 | Site-development work |
| 45111300 | Dismantling works |
| 45111310 | Dismantling works for military installations |
| 45111320 | Dismantling works for security installations |
| 45112000 | Excavating and earth moving work |
| 45112100 | Trench-digging work |
| 45112200 | Soil-stripping work |
| 45112210 | Topsoil-stripping work |
| 45112300 | Infill and land-reclamation work |
| 45112310 | Infill work |
| 45112320 | Land-reclamation work |
| 45112330 | Site-reclamation work |
| 45112340 | Soil-decontamination work |
| 45112350 | Reclamation of wasteland |
| 45112360 | Land rehabilitation work |
| 45112400 | Excavating work |
| 45112410 | Grave-digging work |
| 45112420 | Basement excavation work |
| 45112440 | Terracing of hillsides |
| 45112441 | Terracing work |
| 45112450 | Excavation work at archaeological sites |
| 45112500 | Earthmoving work |
| 45112600 | Cut and fill |
| 45112700 | Landscaping work |
| 45112710 | Landscaping work for green areas |
| 45112711 | Landscaping work for parks |
| 45112712 | Landscaping work for gardens |
| 45112713 | Landscaping work for roof gardens |
| 45112714 | Landscaping work for cemeteries |
| 45112720 | Landscaping work for sports grounds and recreational areas |
| 45112721 | Landscaping work for golf courses |
| 45112722 | Landscaping work for riding areas |
| 45112723 | Landscaping work for playgrounds |
| 45112730 | Landscaping work for roads and motorways |
| 45112740 | Landscaping work for airports |
| 45113000 | Siteworks |
| 45120000 | Test drilling and boring work |
| 45121000 | Test drilling work |
| 45122000 | Test boring work |
| 45200000 | “Works for complete or part construction and civil engineering work” |
| 45210000 | Building construction work |
| 45211000 | Construction work for multi-dwelling buildings and individual houses |
| 45211100 | Construction work for houses |
| 45211200 | Sheltered housing construction work |
| 45211300 | Houses construction work |
| 45211310 | Bathrooms construction work |
| 45211320 | Porches construction work |
| 45211340 | Multi-dwelling buildings construction work |
| 45211341 | Flats construction work |
| 45211350 | Multi-functional buildings construction work |
| 45211360 | Urban development construction work |
| 45211370 | Construction works for saunas |
| 45212000 | Construction work for buildings relating to leisure, sports, culture, lodging and restaurants |
| 45212100 | Construction work of leisure facilities |
| 45212110 | Leisure centre construction work |
| 45212120 | Theme park construction work |
| 45212130 | Amusement park construction work |
| 45212140 | Recreation installation |
| 45212150 | Cinema construction work |
| 45212160 | Casino construction work |
| 45212170 | Entertainment building construction work |
| 45212171 | Entertainment centre construction work |
| 45212172 | Recreation centre construction work |
| 45212180 | Ticket offices construction work |
| 45212190 | Sun-protection works |
| 45212200 | Construction work for sports facilities |
| 45212210 | Single-purpose sports facilities construction work |
| 45212211 | Ice rink construction work |
| 45212212 | Construction work for swimming pool |
| 45212213 | Sport markings works |
| 45212220 | Multi-purpose sports facilities construction work |
| 45212221 | Construction work in connection with structures for sports ground |
| 45212222 | Gymnasium construction work |
| 45212223 | Winter-sports facilities construction work |
| 45212224 | Stadium construction work |
| 45212225 | Sports hall construction work |
| 45212230 | Installation of changing rooms |
| 45212290 | Repair and maintenance work in connection with sports facilities |
| 45212300 | Construction work for art and cultural buildings |
| 45212310 | Construction work for buildings relating to exhibitions |
| 45212311 | Art gallery construction work |
| 45212312 | Exhibition centre construction work |
| 45212313 | Museum construction work |
| 45212314 | Historical monument or memorial construction work |
| 45212320 | Construction work for buildings relating to artistic performances |
| 45212321 | Auditorium construction work |
| 45212322 | Theatre construction work |
| 45212330 | Library construction work |
| 45212331 | Multimedia library construction work |
| 45212340 | Lecture hall construction work |
| 45212350 | Buildings of particular historical or architectural interest |
| 45212351 | Prehistoric monument construction work |
| 45212352 | Industrial monument construction work |
| 45212353 | Palace construction work |
| 45212354 | Castle construction work |
| 45212360 | Religious buildings construction work |
| 45212361 | Church construction work |
| 45212400 | Accommodation and restaurant buildings |
| 45212410 | Construction work for lodging buildings |
| 45212411 | Hotel construction work |
| 45212412 | Hostel construction work |
| 45212413 | Short-stay accommodation construction work |
| 45212420 | Construction work for restaurants and similar facilities |
| 45212421 | Restaurant construction work |
| 45212422 | Canteen construction work |
| 45212423 | Cafeteria construction work |
| 45212500 | Kitchen or restaurant conversion |
| 45212600 | Pavilion construction work |
| 45213000 | Construction work for commercial buildings, warehouses and industrial buildings, buildings relating to transport |
| 45213100 | Construction work for commercial buildings |
| 45213110 | Shop buildings construction work |
| 45213111 | Shopping centre construction work |
| 45213112 | Shop units construction work |
| 45213120 | Post office construction work |
| 45213130 | Bank construction work |
| 45213140 | Market construction work |
| 45213141 | Covered market construction work |
| 45213142 | Open-air market construction work |
| 45213150 | Office block construction work |
| 45213200 | Construction work for warehouses and industrial buildings |
| 45213210 | Cold-storage installations |
| 45213220 | Construction work for warehouses |
| 45213221 | Warehouse stores construction work |
| 45213230 | Abattoir construction work |
| 45213240 | Agricultural buildings construction work |
| 45213241 | Barn construction work |
| 45213242 | Cowsheds construction work |
| 45213250 | Construction work for industrial buildings |
| 45213251 | Industrial units construction work |
| 45213252 | Workshops construction work |
| 45213260 | Stores depot construction work |
| 45213270 | Construction works for recycling station |
| 45213280 | Construction works for compost facility |
| 45213300 | Buildings associated with transport |
| 45213310 | Construction work for buildings relating to road transport |
| 45213311 | Bus station construction work |
| 45213312 | Car park building construction work |
| 45213313 | Service-area building construction work |
| 45213314 | Bus garage construction work |
| 45213315 | Bus-stop shelter construction work |
| 45213316 | Installation works of walkways |
| 45213320 | Construction work for buildings relating to railway transport |
| 45213321 | Railway station construction work |
| 45213322 | Rail terminal building construction work |
| 45213330 | Construction work for buildings relating to air transport |
| 45213331 | Airport buildings construction work |
| 45213332 | Airport control tower construction work |
| 45213333 | Installation works of airport check-in counters |
| 45213340 | Construction work for buildings relating to water transport |
| 45213341 | Ferry terminal building construction work |
| 45213342 | Ro-ro terminal construction work |
| 45213350 | Construction work for buildings relating to various means of transport |
| 45213351 | Maintenance hangar construction work |
| 45213352 | Service depot construction work |
| 45213353 | Installation works of passenger boarding bridges |
| 45213400 | Installation of staffrooms |
| 45214000 | Construction work for buildings relating to education and research |
| 45214100 | Construction work for kindergarten buildings |
| 45214200 | Construction work for school buildings |
| 45214210 | Primary school construction work |
| 45214220 | Secondary school construction work |
| 45214230 | Special school construction work |
| 45214300 | Construction work for college buildings |
| 45214310 | Vocational college construction work |
| 45214320 | Technical college construction work |
| 45214400 | Construction work for university buildings |
| 45214410 | Polytechnic construction work |
| 45214420 | Lecture theatre construction work |
| 45214430 | Language laboratory construction work |
| 45214500 | Construction work for buildings of further education |
| 45214600 | Construction work for research buildings |
| 45214610 | Laboratory building construction work |
| 45214620 | Research and testing facilities construction work |
| 45214630 | Scientific installations |
| 45214631 | Installation works of cleanrooms |
| 45214640 | Meteorological stations construction work |
| 45214700 | Construction work for halls of residence |
| 45214710 | Entrance hall construction work |
| 45214800 | Training facilities building |
| 45215000 | Construction work for buildings relating to health and social services, for crematoriums and public conveniences |
| 45215100 | Construction work for buildings relating to health |
| 45215110 | Spa construction work |
| 45215120 | Special medical building construction work |
| 45215130 | Clinic construction work |
| 45215140 | Hospital facilities construction work |
| 45215141 | Operating theatre construction work |
| 45215142 | Intensive-care unit construction work |
| 45215143 | Diagnostic screening room construction work |
| 45215144 | Screening rooms construction work |
| 45215145 | Fluoroscopy room construction work |
| 45215146 | Pathology room construction work |
| 45215147 | Forensic room construction work |
| 45215148 | Catheter room construction work |
| 45215200 | Construction work for social services buildings |
| 45215210 | Construction work for subsidised residential accommodation |
| 45215212 | Retirement home construction work |
| 45215213 | Nursing home construction work |
| 45215214 | Residential homes construction work |
| 45215215 | Children's home construction work |
| 45215220 | Construction work for social facilities other than subsidised residential accommodation |
| 45215221 | Daycare centre construction work |
| 45215222 | Civic centre construction work |
| 45215300 | Construction work for crematoriums |
| 45215400 | Cemetery works |
| 45215500 | Public conveniences |
| 45216000 | Construction work for buildings relating to law and order or emergency services and for military buildings |
| 45216100 | Construction work for buildings relating to law and order or emergency services |
| 45216110 | Construction work for buildings relating to law and order |
| 45216111 | Police station construction work |
| 45216112 | Court building construction work |
| 45216113 | Prison building construction work |
| 45216114 | Parliament and public assembly buildings |
| 45216120 | Construction work for buildings relating to emergency services |
| 45216121 | Fire station construction work |
| 45216122 | Ambulance station construction work |
| 45216123 | Mountain-rescue building construction work |
| 45216124 | Lifeboat station construction work |
| 45216125 | Emergency-services building construction work |
| 45216126 | Coastguard building construction work |
| 45216127 | Rescue-service station construction work |
| 45216128 | Lighthouse construction work |
| 45216129 | Protective shelters |
| 45216200 | Construction work for military buildings and installations |
| 45216220 | Military bunker construction work |
| 45216230 | Military shelter construction work |
| 45216250 | Trench defences construction work |
| 45217000 | Inflatable buildings construction work |
| 45220000 | Engineering works and construction works |
| 45221000 | Construction work for bridges and tunnels, shafts and subways |
| 45221100 | Construction work for bridges |
| 45221110 | Bridge construction work |
| 45221111 | Road bridge construction work |
| 45221112 | Railway bridge construction work |
| 45221113 | Footbridge construction work |
| 45221114 | Construction work for iron bridges |
| 45221115 | Construction work for steel bridges |
| 45221117 | Weighbridge construction work |
| 45221118 | Pipeline-carrying bridge construction work |
| 45221119 | Bridge renewal construction work |
| 45221120 | Viaduct construction work |
| 45221121 | Road viaduct construction work |
| 45221122 | Railway viaduct construction work |
| 45221200 | Construction work for tunnels, shafts and subways |
| 45221210 | Covered or partially-covered excavations |
| 45221211 | Underpass |
| 45221213 | Covered or partially-covered railway excavations |
| 45221214 | Covered or partially-covered road excavations |
| 45221220 | Culverts |
| 45221230 | Shafts |
| 45221240 | Construction work for tunnels |
| 45221241 | Road tunnel construction work |
| 45221242 | Railway tunnel construction work |
| 45221243 | Pedestrian tunnel construction work |
| 45221244 | Canal tunnel construction work |
| 45221245 | Under-river tunnel construction work |
| 45221246 | Undersea tunnel construction work |
| 45221247 | Tunnelling works |
| 45221248 | Tunnel linings construction work |
| 45221250 | Underground work other than tunnels, shafts and subways |
| 45222000 | Construction work for engineering works except bridges, tunnels, shafts and subways |
| 45222100 | Waste-treatment plant construction work |
| 45222110 | Waste disposal site construction work |
| 45222200 | Engineering work for military installations |
| 45222300 | Engineering work for security installations |
| 45223000 | Structures construction work |
| 45223100 | Assembly of metal structures |
| 45223110 | Installation of metal structures |
| 45223200 | Structural works |
| 45223210 | Structural steelworks |
| 45223220 | Structural shell work |
| 45223300 | Parking lot construction work |
| 45223310 | Underground car park construction work |
| 45223320 | Park-and-ride facility construction work |
| 45223400 | Radar station construction work |
| 45223500 | Reinforced-concrete structures |
| 45223600 | Dog kennels construction work |
| 45223700 | Service area construction work |
| 45223710 | Motorway service area construction work |
| 45223720 | Petrol/gas stations construction work |
| 45223800 | Assembly and erection of prefabricated structures |
| 45223810 | Prefabricated constructions |
| 45223820 | Prefabricated units and components |
| 45223821 | Prefabricated units |
| 45223822 | Prefabricated components |
| 45230000 | Construction work for pipelines, communication and power lines, for highways, roads, airfields and railways; flatwork |
| 45231000 | Construction work for pipelines, communication and power lines |
| 45231100 | General construction work for pipelines |
| 45231110 | Pipelaying construction work |
| 45231111 | Pipeline lifting and relaying |
| 45231112 | Installation of pipe system |
| 45231113 | Pipeline relaying works |
| 45231200 | Construction work for oil and gas pipelines |
| 45231210 | Construction work for oil pipelines |
| 45231220 | Construction work for gas pipelines |
| 45231221 | Gas supply mains construction work |
| 45231222 | Gasholder works |
| 45231223 | Gas distribution ancillary work |
| 45231300 | Construction work for water and sewage pipelines |
| 45231400 | Construction work for electricity powerlines |
| 45231500 | Compressed-air pipeline work |
| 45231510 | Compressed-air pipeline work for mailing system |
| 45231600 | Construction work for communication lines |
| 45232000 | Ancillary works for pipelines and cables |
| 45232100 | Ancillary works for water pipelines |
| 45232120 | Irrigation works |
| 45232121 | Irrigation piping construction work |
| 45232130 | Storm-water piping construction work |
| 45232140 | District-heating mains construction work |
| 45232141 | Heating works |
| 45232142 | Heat-transfer station construction work |
| 45232150 | Works related to water-distribution pipelines |
| 45232151 | Water-main refurbishment construction work |
| 45232152 | Pumping station construction work |
| 45232153 | Construction work for water towers |
| 45232154 | Construction work of elevated tanks for drinking water |
| 45232200 | Ancillary works for electricity powerlines |
| 45232210 | Overhead line construction |
| 45232220 | Substation construction work |
| 45232221 | Transformer substation |
| 45232300 | Construction and ancillary works for telephone and communication lines |
| 45232310 | Construction work for telephone lines |
| 45232311 | Roadside emergency telephone lines |
| 45232320 | Cable broadcasting lines |
| 45232330 | Erection of aerials |
| 45232331 | Ancillary works for broadcasting |
| 45232332 | Ancillary works for telecommunications |
| 45232340 | Mobile-telephone base-stations construction work |
| 45232400 | Sewer construction work |
| 45232410 | Sewerage work |
| 45232411 | Foul-water piping construction work |
| 45232420 | Sewage work |
| 45232421 | Sewage treatment works |
| 45232422 | Sludge-treatment works |
| 45232423 | Sewage pumping stations construction work |
| 45232424 | Sewage outfall construction work |
| 45232430 | Water-treatment work |
| 45232431 | Wastewater pumping station |
| 45232440 | Construction work for sewage pipes |
| 45232450 | Drainage construction works |
| 45232451 | Drainage and surface works |
| 45232452 | Drainage works |
| 45232453 | Drains construction work |
| 45232454 | Rain-water basin construction work |
| 45232460 | Sanitary works |
| 45232470 | Waste transfer station |
| 45233000 | Construction, foundation and surface works for highways, roads |
| 45233100 | Construction work for highways, roads |
| 45233110 | Motorway construction works |
| 45233120 | Road construction works |
| 45233121 | Main road construction works |
| 45233122 | Ring road construction work |
| 45233123 | Secondary road construction work |
| 45233124 | Trunk road construction work |
| 45233125 | Road junction construction work |
| 45233126 | Grade-separated junction construction work |
| 45233127 | T-junction construction work |
| 45233128 | Roundabout construction work |
| 45233129 | Crossroad construction work |
| 45233130 | Construction work for highways |
| 45233131 | Construction work for elevated highways |
| 45233139 | Highway maintenance work |
| 45233140 | Roadworks |
| 45233141 | Road-maintenance works |
| 45233142 | Road-repair works |
| 45233144 | Overpass construction work |
| 45233150 | Traffic-calming works |
| 45233160 | Paths and other metalled surfaces |
| 45233161 | Footpath construction work |
| 45233162 | Cycle path construction work |
| 45233200 | Various surface works |
| 45233210 | Surface work for highways |
| 45233220 | Surface work for roads |
| 45233221 | Road-surface painting work |
| 45233222 | Paving and asphalting works |
| 45233223 | Carriageway resurfacing works |
| 45233224 | Dual carriageway construction work |
| 45233225 | Single carriageway construction work |
| 45233226 | Access road construction work |
| 45233227 | Slip road construction work |
| 45233228 | Surface coating construction work |
| 45233229 | Verge maintenance work |
| 45233250 | Surfacing work except for roads |
| 45233251 | Resurfacing works |
| 45233252 | Surface work for streets |
| 45233253 | Surface work for footpaths |
| 45233260 | Pedestrian ways construction work |
| 45233261 | Pedestrian overpass construction work |
| 45233262 | Pedestrian zone construction work |
| 45233270 | Parking-lot-surface painting work |
| 45233280 | Erection of road-barriers |
| 45233290 | Installation of road signs |
| 45233291 | Installation of bollards |
| 45233292 | Installation of safety equipment |
| 45233293 | Installation of street furniture |
| 45233294 | Installation of road signals |
| 45233300 | Foundation work for highways, roads, streets and footpaths |
| 45233310 | Foundation work for highways |
| 45233320 | Foundation work for roads |
| 45233330 | Foundation work for streets |
| 45233340 | Foundation work for footpaths |
| 45234000 | Construction work for railways and cable transport systems |
| 45234100 | Railway construction works |
| 45234110 | Intercity railway works |
| 45234111 | City railway construction work |
| 45234112 | Railway depot construction work |
| 45234113 | Demolition of tracks |
| 45234114 | Railway embankment construction work |
| 45234115 | Railway signalling works |
| 45234116 | Track construction works |
| 45234120 | Urban railway works |
| 45234121 | Tramway works |
| 45234122 | Underground railway works |
| 45234123 | Partially underground railway works |
| 45234124 | Underground passenger railway transport |
| 45234125 | Underground railway station |
| 45234126 | Tramline construction works |
| 45234127 | Tramway depot construction work |
| 45234128 | Tramway platforms construction work |
| 45234129 | Urban railway track construction works |
| 45234130 | Ballast construction works |
| 45234140 | Level crossing construction works |
| 45234160 | Catenary's construction works |
| 45234170 | Locomotive-substations construction works |
| 45234180 | Construction work for railways workshop |
| 45234181 | Construction work for rail track sectioning cabins |
| 45234200 | Cable-supported transport systems |
| 45234210 | Cable-supported transport systems with cabins |
| 45234220 | Construction work for ski lifts |
| 45234230 | Construction work for chair lifts |
| 45234240 | Funicular railway system |
| 45234250 | Teleferic construction work |
| 45235000 | Construction work for airfields, runways and manoeuvring surfaces |
| 45235100 | Construction work for airports |
| 45235110 | Construction work for air fields |
| 45235111 | Airfield pavement construction work |
| 45235200 | Runway construction works |
| 45235210 | Runway resurfacing |
| 45235300 | Construction work for aircraft-manoeuvring surfaces |
| 45235310 | Taxiway construction work |
| 45235311 | Taxiway pavement construction work |
| 45235320 | Construction work for aircraft aprons |
| 45236000 | Flatwork |
| 45236100 | Flatwork for miscellaneous sports installations |
| 45236110 | Flatwork for sports fields |
| 45236111 | Flatwork for golf course |
| 45236112 | Flatwork for tennis court |
| 45236113 | Flatwork for racecourse |
| 45236114 | Flatwork for running tracks |
| 45236119 | Repair work on sports fields |
| 45236200 | Flatwork for recreation installations |
| 45236210 | Flatwork for children's play area |
| 45236220 | Flatwork for zoo |
| 45236230 | Flatwork for gardens |
| 45236250 | Flatwork for parks |
| 45236290 | Repair work on recreational areas |
| 45236300 | Flatwork for cemeteries |
| 45237000 | Stage construction works |
| 45240000 | Construction work for water projects |
| 45241000 | Harbour construction works |
| 45241100 | Quay construction work |
| 45241200 | Offshore terminal in situ construction work |
| 45241300 | Pier construction work |
| 45241400 | Dock construction work |
| 45241500 | Wharf construction work |
| 45241600 | Installation of port lighting equipment |
| 45242000 | Waterside leisure facilities construction work |
| 45242100 | Water-sports facilities construction work |
| 45242110 | Launchway construction work |
| 45242200 | Marina construction work |
| 45242210 | Yacht harbour construction work |
| 45243000 | Coastal-defence works |
| 45243100 | Cliff-protection works |
| 45243110 | Cliff-stabilisation works |
| 45243200 | Breakwater construction work |
| 45243300 | Sea wall construction work |
| 45243400 | Beach-consolidation works |
| 45243500 | Sea defences construction work |
| 45243510 | Embankment works |
| 45243600 | Quay wall construction work |
| 45244000 | Marine construction works |
| 45244100 | Marine installations |
| 45244200 | Jetties |
| 45245000 | Dredging and pumping works for water treatment plant installations |
| 45246000 | River regulation and flood control works |
| 45246100 | River-wall construction |
| 45246200 | Riverbank protection works |
| 45246400 | Flood-prevention works |
| 45246410 | Flood-defences maintenance works |
| 45246500 | Promenade construction work |
| 45246510 | Boardwalk construction work |
| 45247000 | Construction work for dams, canals, irrigation channels and aqueducts |
| 45247100 | Construction work for waterways |
| 45247110 | Canal construction |
| 45247111 | Irrigation channel construction work |
| 45247112 | Drainage canal construction work |
| 45247120 | Waterways except canals |
| 45247130 | Aqueduct construction work |
| 45247200 | Construction work for dams and similar fixed structures |
| 45247210 | Dam construction work |
| 45247211 | Dam wall construction work |
| 45247212 | Dam-reinforcement works |
| 45247220 | Weir construction work |
| 45247230 | Dyke construction work |
| 45247240 | Static barrage construction work |
| 45247270 | Reservoir construction works |
| 45248000 | Construction work for hydro-mechanical structures |
| 45248100 | Canal locks construction work |
| 45248200 | Dry docks construction work |
| 45248300 | Construction work for floating docks |
| 45248400 | Landing stages construction work |
| 45248500 | Movable barrages construction work |
| 45250000 | Construction works for plants, mining and manufacturing and for buildings relating to the oil and gas industry |
| 45251000 | Construction works for power plants and heating plants |
| 45251100 | Construction work for power plant |
| 45251110 | Nuclear-power station construction work |
| 45251111 | Construction work for nuclear reactors |
| 45251120 | Hydro-electric plant construction work |
| 45251140 | Thermal power plant construction work |
| 45251141 | Geothermal power station construction work |
| 45251142 | Wood-fired power station construction work |
| 45251143 | Compressed-air generating plant construction work |
| 45251150 | Construction work for cooling towers |
| 45251160 | Wind-power installation works |
| 45251200 | Heating plant construction work |
| 45251220 | Cogeneration plant construction work |
| 45251230 | Steam-generation plant construction work |
| 45251240 | Landfill-gas electricity generating plant construction work |
| 45251250 | District-heating plant construction work |
| 45252000 | Construction works for sewage treatment plants, purification plants and refuse incineration plants |
| 45252100 | Sewage-treatment plant construction work |
| 45252110 | Mobile plant construction work |
| 45252120 | Water-treatment plant construction work |
| 45252121 | Sedimentation installations |
| 45252122 | Sewage digesters |
| 45252123 | Screening installations |
| 45252124 | Dredging and pumping works |
| 45252125 | Rock-dumping work |
| 45252126 | Drinking-water treatment plant construction work |
| 45252127 | Wastewater treatment plant construction work |
| 45252130 | Sewage plant equipment |
| 45252140 | Sludge-dewatering plant construction work |
| 45252150 | Coal-handling plant construction work |
| 45252200 | Purification plant equipment |
| 45252210 | Water purification plant construction work |
| 45252300 | Refuse-incineration plant construction work |
| 45253000 | Construction work for chemical-processing plant |
| 45253100 | Demineralisation plant construction work |
| 45253200 | Desulphurisation plant construction work |
| 45253300 | Distilling or rectifying plant construction work |
| 45253310 | Water-distillation plants construction work |
| 45253320 | Alcohol-distillation plants construction work |
| 45253400 | Construction work for petrochemical plant |
| 45253500 | Construction work for pharmaceutical plant |
| 45253600 | Deionisation plant construction work |
| 45253700 | Digestion plant construction work |
| 45253800 | Composting plant construction work |
| 45254000 | Construction work for mining and manufacturing |
| 45254100 | Construction work for mining |
| 45254110 | Pithead construction work |
| 45254200 | Construction work for manufacturing plant |
| 45255000 | Construction work for the oil and gas industry |
| 45255100 | Construction work for production platforms |
| 45255110 | Wells construction work |
| 45255120 | Platforms facilities construction work |
| 45255121 | Topside facilities construction work |
| 45255200 | Oil refinery construction work |
| 45255210 | Oil terminal construction work |
| 45255300 | Gas terminal construction work |
| 45255400 | Fabrication work |
| 45255410 | Offshore fabrication work |
| 45255420 | Onshore fabrication work |
| 45255430 | Demolition of oil platforms |
| 45255500 | Drilling and exploration work |
| 45255600 | Coiled-tubing well work |
| 45255700 | Coal-gasification plant construction work |
| 45255800 | Gas-production plant construction work |
| 45259000 | Repair and maintenance of plant |
| 45259100 | Wastewater-plant repair and maintenance work |
| 45259200 | Purification-plant repair and maintenance work |
| 45259300 | Heating-plant repair and maintenance work |
| 45259900 | Plant upgrade work |
| 45260000 | Roof works and other special trade construction works |
| 45261000 | Erection and related works of roof frames and coverings |
| 45261100 | Roof-framing work |
| 45261200 | Roof-covering and roof-painting work |
| 45261210 | Roof-covering work |
| 45261211 | Roof-tiling work |
| 45261212 | Roof-slating work |
| 45261213 | Metal roof-covering work |
| 45261214 | Bituminous roof-covering work |
| 45261215 | Solar panel roof-covering work |
| 45261220 | Roof-painting and other coating work |
| 45261221 | Roof-painting work |
| 45261222 | Cement roof-coating work |
| 45261300 | Flashing and guttering work |
| 45261310 | Flashing work |
| 45261320 | Guttering work |
| 45261400 | Sheeting work |
| 45261410 | Roof insulation work |
| 45261420 | Waterproofing work |
| 45261900 | Roof repair and maintenance work |
| 45261910 | Roof repair |
| 45261920 | Roof maintenance work |
| 45262000 | Special trade construction works other than roof works |
| 45262100 | Scaffolding work |
| 45262110 | Scaffolding dismantling work |
| 45262120 | Scaffolding erection work |
| 45262200 | Foundation work and water-well drilling |
| 45262210 | Foundation work |
| 45262211 | Pile driving |
| 45262212 | Trench sheeting work |
| 45262213 | Diaphragm wall technique |
| 45262220 | Water-well drilling |
| 45262300 | Concrete work |
| 45262310 | Reinforced-concrete work |
| 45262311 | Concrete carcassing work |
| 45262320 | Screed works |
| 45262321 | Floor-screed works |
| 45262330 | Concrete repair work |
| 45262340 | Grouting work |
| 45262350 | Unreinforced-concrete work |
| 45262360 | Cementing work |
| 45262370 | Concrete-coating work |
| 45262400 | Structural steel erection work |
| 45262410 | Structural steel erection work for buildings |
| 45262420 | Structural steel erection work for structures |
| 45262421 | Offshore mooring work |
| 45262422 | Subsea drilling work |
| 45262423 | Deck-fabrication work |
| 45262424 | Offshore-module fabrication work |
| 45262425 | Jacket-fabrication work |
| 45262426 | Pile-fabrication work |
| 45262500 | Masonry and bricklaying work |
| 45262510 | Stonework |
| 45262511 | Stone carving |
| 45262512 | Dressed stonework |
| 45262520 | Bricklaying work |
| 45262521 | Facing brickwork |
| 45262522 | Masonry work |
| 45262600 | Miscellaneous special-trade construction work |
| 45262610 | Industrial chimneys |
| 45262620 | Supporting walls |
| 45262630 | Construction of furnaces |
| 45262640 | Environmental improvement works |
| 45262650 | Cladding works |
| 45262660 | Asbestos-removal work |
| 45262670 | Metalworking |
| 45262680 | Welding |
| 45262690 | Refurbishment of run-down buildings |
| 45262700 | Building alteration work |
| 45262710 | Fresco maintenance work |
| 45262800 | Building extension work |
| 45262900 | Balcony work |
| 45300000 | Building installation work |
| 45310000 | Electrical installation work |
| 45311000 | Electrical wiring and fitting work |
| 45311100 | Electrical wiring work |
| 45311200 | Electrical fitting work |
| 45312000 | Alarm system and antenna installation work |
| 45312100 | Fire-alarm system installation work |
| 45312200 | Burglar-alarm system installation work |
| 45312300 | Antenna installation work |
| 45312310 | Lightning-protection works |
| 45312311 | Lightning-conductor installation work |
| 45312320 | Television aerial installation work |
| 45312330 | Radio aerial installation work |
| 45313000 | Lift and escalator installation work |
| 45313100 | Lift installation work |
| 45313200 | Escalator installation work |
| 45313210 | Travelator installation work |
| 45314000 | Installation of telecommunications equipment |
| 45314100 | Installation of telephone exchanges |
| 45314120 | Installation of switchboards |
| 45314200 | Installation of telephone lines |
| 45314300 | Installation of cable infrastructure |
| 45314310 | Installation of cable laying |
| 45314320 | Installation of computer cabling |
| 45315000 | Electrical installation work of heating and other electrical building-equipment |
| 45315100 | Electrical engineering installation works |
| 45315200 | Turbine works |
| 45315300 | Electricity supply installations |
| 45315400 | High voltage installation work |
| 45315500 | Medium-voltage installation work |
| 45315600 | Low-voltage installation work |
| 45315700 | Switching station installation work |
| 45316000 | Installation work of illumination and signalling systems |
| 45316100 | Installation of outdoor illumination equipment |
| 45316110 | Installation of road lighting equipment |
| 45316200 | Installation of signalling equipment |
| 45316210 | Installation of traffic monitoring equipment |
| 45316211 | Installation of illuminated road signs |
| 45316212 | Installation of traffic lights |
| 45316213 | Installation of traffic guidance equipment |
| 45316220 | Installation of airport signalling equipment |
| 45316230 | Installation of port signalling equipment |
| 45317000 | Other electrical installation work |
| 45317100 | Electrical installation work of pumping equipment |
| 45317200 | Electrical installation work of transformers |
| 45317300 | Electrical installation work of electrical distribution apparatus |
| 45317400 | Electrical installation work of filtration equipment |
| 45320000 | Insulation work |
| 45321000 | Thermal insulation work |
| 45323000 | Sound insulation work |
| 45324000 | Plasterboard works |
| 45330000 | Plumbing and sanitary works |
| 45331000 | Heating, ventilation and air-conditioning installation work |
| 45331100 | Central-heating installation work |
| 45331110 | Boiler installation work |
| 45331200 | Ventilation and air-conditioning installation work |
| 45331210 | Ventilation installation work |
| 45331211 | Outdoor ventilation installation work |
| 45331220 | Air-conditioning installation work |
| 45331221 | Partial air-conditioning installation work |
| 45331230 | Installation work of cooling equipment |
| 45331231 | Installation work of refrigeration equipment |
| 45332000 | Plumbing and drain-laying work |
| 45332200 | Water plumbing work |
| 45332300 | Drain-laying work |
| 45332400 | Sanitary fixture installation work |
| 45333000 | Gas-fitting installation work |
| 45333100 | Gas regulation equipment installation work |
| 45333200 | Gas meter installation work |
| 45340000 | Fencing, railing and safety equipment installation work |
| 45341000 | Erection of railings |
| 45342000 | Erection of fencing |
| 45343000 | Fire-prevention installation works |
| 45343100 | Fireproofing work |
| 45343200 | Firefighting equipment installation work |
| 45343210 | CO2 fire-extinguishing equipment installation work |
| 45343220 | Fire-extinguishers installation work |
| 45343230 | Sprinkler systems installation work |
| 45350000 | Mechanical installations |
| 45351000 | Mechanical engineering installation works |
| 45400000 | Building completion work |
| 45410000 | Plastering work |
| 45420000 | Joinery and carpentry installation work |
| 45421000 | Joinery work |
| 45421100 | Installation of doors and windows and related components |
| 45421110 | Installation of door and window frames |
| 45421111 | Installation of door frames |
| 45421112 | Installation of window frames |
| 45421120 | Installation of thresholds |
| 45421130 | Installation of doors and windows |
| 45421131 | Installation of doors |
| 45421132 | Installation of windows |
| 45421140 | Installation of metal joinery except doors and windows |
| 45421141 | Installation of partitioning |
| 45421142 | Installation of shutters |
| 45421143 | Installation work of blinds |
| 45421144 | Installation work of awnings |
| 45421145 | Installation work of roller blinds |
| 45421146 | Installation of suspended ceilings |
| 45421147 | Installation of grilles |
| 45421148 | Installation of gates |
| 45421150 | Non-metal joinery installation work |
| 45421151 | Installation of fitted kitchens |
| 45421152 | Installation of partition walls |
| 45421153 | Installation of built-in furniture |
| 45421160 | Ironmongery work |
| 45422000 | Carpentry installation work |
| 45422100 | Woodwork |
| 45430000 | Floor and wall covering work |
| 45431000 | Tiling work |
| 45431100 | Floor-tiling work |
| 45431200 | Wall-tiling work |
| 45432000 | Floor-laying and covering, wall-covering and wall-papering work |
| 45432100 | Floor laying and covering work |
| 45432110 | Floor-laying work |
| 45432111 | Laying work of flexible floor coverings |
| 45432112 | Laying of paving |
| 45432113 | Parquet flooring |
| 45432114 | Wood flooring work |
| 45432120 | False floor installation work |
| 45432121 | Computer floors |
| 45432130 | Floor-covering work |
| 45432200 | Wall-covering and wall-papering work |
| 45432210 | Wall-covering work |
| 45432220 | Wall-papering work |
| 45440000 | Painting and glazing work |
| 45441000 | Glazing work |
| 45442000 | Application work of protective coatings |
| 45442100 | Painting work |
| 45442110 | Painting work of buildings |
| 45442120 | Painting and protective-coating work of structures |
| 45442121 | Painting work of structures |
| 45442180 | Repainting work |
| 45442190 | Paint-stripping work |
| 45442200 | Application work of anti-corrosive coatings |
| 45442210 | Galvanizing works |
| 45442300 | Surface-protection work |
| 45443000 | Façade work |
| 45450000 | Other building completion work |
| 45451000 | Decoration work |
| 45451100 | Ornamentation fitting work |
| 45451200 | Panelling work |
| 45451300 | Interior gardens |
| 45452000 | Exterior cleaning work for buildings |
| 45452100 | Blast cleaning work for building exteriors |
| 45453000 | Overhaul and refurbishment work |
| 45453100 | Refurbishment work |
| 45454000 | Restructuring work |
| 45454100 | Restoration work |
| 45500000 | Hire of construction and civil engineering machinery and equipment with operator |
| 45510000 | Hire of cranes with operator |
| 45520000 | Hire of earth moving equipment with operator |