|
| 236220 | 4100 | * | except stadium construction | |
| | 4290 | * | stadium construction | |
| 237110 | 4220 | * | | |
| 237120 | 4220 | * | except refinery construction | |
| | 4290 | * | refinery construction | |
| 237130 | 4220 | * | | |
| 237210 | 4290 | * | | |
| 237310 | 4210 | * | except traffic signaling and highway lighting installation contractors | |
| | 4321 | * | traffic signaling and lighting installation contractors (if they are specialized in this activity only) | |
| 237990 | 4210 | * | construction of tunnels, subways, and railroads | |
| | 4220 | * | construction of hydroelectric generating facilities | |
| | 4290 | * | marine construction projects, ski lift construction, outdoor recreational facility construction including athletic fields, golf courses, playgrounds, tennis courts, and similar | |
| | 4312 | * | microtunneling (horizontal drilling to install cables, conduit, drains, and similar), drainage projects (such as urban storm water runoff control systems), soil stabilization using anchored earth procedures, | |
| 238110 | 4390 | * | | |
| 238120 | 4390 | * | | |
| 238130 | 4390 | * | | |
| 238140 | 4330 | * | glass block installation and stucco contractors | |
| | 4390 | * | except glass block and stucco installation contractors | |
| 238150 | 4330 | * | | |
| 238160 | 4390 | * | | |
| 238170 | 4390 | * | | |
| 238190 | 4390 | * | | |
| 238210 | 4321 | * | | |
| 238220 | 3320 | * | industrial furnace and power boiler installation | |
| | 4322 | | except boiler chipping, cleaning, and scaling; industrial furnace and power boiler installation; chimney liner installation | |
| | 4390 | * | chimney liner installation | |
| | 8129 | * | boiler chipping, cleaning, and scaling | |
| 238290 | 331 | | ISIC group level link - servicing, repair and maintenance of miscellaneous building equipment performed by millwrights and machine rigging contractors | |
| | 3320 | * | installation of industrial machinery and equipment by specialty contractors | |
| | 4321 | * | installation of residential satellite dishes | |
| | 4329 | * | except repair and maintenance of miscellaneous building equipment, installation of industrial machinery and equipment by specialty contractors, and installation of satellite dishes | |
| 238310 | 4329 | * | soundproofing and building insulation contractors ( wall cavity, attic, for example) | |
| | 4330 | * | except soundproofing and building insulation contractors | |
| 238320 | 4330 | * | | |
| 238330 | 4330 | * | | |
| 238340 | 4330 | * | | |
| 238350 | 4330 | * | | |
| 238390 | 4330 | * | except waterproofing, damp proofing, bathtub refinishing and installation of custom sheet metal work fabricated on site | |
| | 4390 | * | waterproofing, damp proofing, bathtub refinishing and installation of custom sheet metal work fabricated on site | |
| 238910 | 4311 | | demolition of buildings and other structures | |
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